Description Cyber Defense Analyst Location: Suitland, MD Clearance: Active TS/SCI 1st Shift Work Hours: 0730 – 1530 Leidos is seeking a Cyber Defense Analyst (1st Shift) to join a mission focused team supporting the Navy's cybersecurity environment at the Office of Naval Intelligence (ONI) Hopper Global Communications Center (HGCC) in Suitland, MD. In this role, you will serve on the front line of cyber defense, helping protect critical TS/SCI networks by monitoring and investigating cybersecurity alerts, identifying potential threats, and supporting proactive threat hunting activities. You will apply your experience in the Certified Network Defender (CND) discipline and knowledge of IT systems and networks to analyze security events, manage incident tickets, support intelligence gathering and analysis, and communicate findings to key stakeholders. Work Schedule: This is a 1st shift position with regular work hours of 0730 – 1530. Occasional floater shifts or coverage outside of these hours may be required based on program and staffing needs. Primary Responsibilities Perform first line monitoring of security tools and conduct initial analysis of alerts for TS/SCI networks, including JWICS, ATLAS, and other networks for which HGCC is responsible. Monitor organizational cybersecurity tools for alerts, anomalies, and indicators of compromise. Investigate and perform initial technical analysis of cybersecurity alerts and events, escalating potential incidents to Tier 2 as appropriate. Create, update, and manage incident and event tickets within the approved ticketing system. Conduct proactive threat hunting activities to identify potential malicious activity and emerging threats. Perform wireless security scans of facilities and document and report findings. Correlate alerts and security events across multiple platforms to identify patterns, trends, and potential threats. Prepare and deliver operational and situational awareness briefings. Support annual cyber defense exercises. Required Qualifications Bachelor's degree in Cybersecurity, Information Technology, Information Assurance, or a related area of study desired with 4+ years of experience or Master’s degree with 2+ years of experience. Additional experience may be considered in lieu of a degree. Active TS/SCI security clearance. Concentrated experience in the CND discipline, regardless of degree. Experience monitoring and investigating alerts from cybersecurity tools. Experience with Security Information and Event Management (SIEM) systems such as Splunk and Elastic. Experience with Network Intrusion Detection/Prevention Systems (NIDPS), such as Cisco FirePower and Palo Alto NGFW, as well as host-based tools such as Trellix ePO, Microsoft Defender, and Tanium. Knowledge of scripting and coding languages such as Python, Perl, Ruby, JavaScript, PowerShell, C, C++, and Java. Knowledge of penetration testing and red team tactics, techniques, and procedures, as well as tools such as Kali, SamuraiWTF, Nmap, Burp Suite, sqlmap, and Metasploit. Knowledge of ticketing systems, report writing, and intelligence gathering, analysis, and dissemination techniques specific to cybersecurity. Strong analytical, conceptual, and problem-solving skills. Required Certifications Must possess one of the following certifications or obtain one within 30 days of accepting an offer: CompTIA CySA+, CompTIA PenTest+, CompTIA Cloud+, EC Council CEH, GIAC GCIA, GIAC GCIH, GICSP, or Cisco CyberOps. NITESONI DABAOPP1 If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: September 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $87,100.00 - $157,450.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission . Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Description We have an IMMEDIATE NEED for a Systems Integration Engineer to provide technical support for the integration of various sub-systems as part of the DISA Defense Red Switch Network in support of an enterprise VoIP management system. As a Systems Integration Engineer on this program, you will be a member of a team that interacts with technical and non-technical teammates including customers and vendors, but primarily with subject matter expert teammates. In this role, you will provide technical assistance, administer configurations, support testing, recommend enhancements, and troubleshoot and resolve issues associated with the various sub-systems. Responsibilities: Leverage your technical background to understand a customer’s goals and identify the best integration solution for their needs Perform customer (end user / end user system) Integration by following instructions and executing a process Test and troubleshoot configurations to confirm successful integration Communicate with customers during integration and post-integration including responding to emails, facilitating meetings or phone conversations, participating in solving technical problems Author/update documentation Identify configuration errors and check appropriate log files to debug issues. Core Qualifications: Bachelor's degree and 8 years of overall related experience. Additional experience may be accepted in lieu of degree Broad range of skills and experience across several COTS technologies- Windows, Linux, VMware, and networking. Excellent communication skills (written and verbal) Detail-oriented Active SCI clearance or Top Secret (eligible for SCI) clearance Security+ is REQUIRED All candidates must be US CITIZENS to be considered for the position Experience or demonstrated familiarity in multiple of the following technologies, and a desire to learn the others: MS Windows (AD, GPO, Server 2022, Win11, WSUS) RedHat Linux OS administration VMware ESXi, vCenter, and VMware Cloud Foundations architecture suite Management of Juniper routers, firewalls, and switches via Juniper Space Juniper Routing Director and Security Director Cisco ISE, RadiantOne, RSA SecurID SolarWinds NPM Splunk Enterprise Search Tenable vulnerability/compliance scanning tools HAIPE management using GEM One Session Border Controllers (Ribbon/Oracle) Oracle SDM and OCOM Preferred Qualifications: Previous experience in providing similar integration support for onboarding external information systems Experience or demonstrated familiarity with multiple of the following identity, credential, and access management (ICAM) concepts/standards: LDAP or MS Active Directory PKI and TLS/SSL RADIUS, SNMP, and NTP protocols Multi-factor Authentication (RSA) Experience or demonstrated familiarity with Public Key Infrastructure concepts and usage, including certificates, browser security configurations, and tokens Experience in identity management and governance, to include single sign-on, identity federation, or enterprise directory architecture and design Local to Ft. Meade, MD If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: September 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $107,900.00 - $195,050.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission . Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Description Cyber Defense Analyst (3rd Shift) Location: Suitland, MD Clearance: Active TS/SCI 3rd Shift Work Hours: 2330 – 0730 Leidos is seeking a Cyber Defense Analyst (3rd Shift) to join a mission focused team supporting the Navy's cybersecurity environment at the Office of Naval Intelligence (ONI) Hopper Global Communications Center (HGCC) in Suitland, MD. In this role, you will serve on the front line of cyber defense, helping protect critical TS/SCI networks by monitoring and investigating cybersecurity alerts, identifying potential threats, and supporting proactive threat hunting activities. You will apply your experience in the Certified Network Defender (CND) discipline and knowledge of IT systems and networks to analyze security events, manage incident tickets, support intelligence gathering and analysis, and communicate findings to key stakeholders. Work Schedule: This is a 3rd shift position with regular work hours of 2330 – 0730. Occasional floater shifts or coverage outside of these hours may be required based on program and staffing needs. Primary Responsibilities Perform first line monitoring of security tools and conduct initial analysis of alerts for TS/SCI networks, including JWICS, ATLAS, and other networks for which HGCC is responsible. Monitor organizational cybersecurity tools for alerts, anomalies, and indicators of compromise. Investigate and perform initial technical analysis of cybersecurity alerts and events, escalating potential incidents to Tier 2 as appropriate. Create, update, and manage incident and event tickets within the approved ticketing system. Conduct proactive threat hunting activities to identify potential malicious activity and emerging threats. Perform wireless security scans of facilities and document and report findings. Correlate alerts and security events across multiple platforms to identify patterns, trends, and potential threats. Prepare and deliver operational and situational awareness briefings. Support annual cyber defense exercises. Required Qualifications Bachelor's degree in Cybersecurity, Information Technology, Information Assurance, or a related area of study desired with 4+ years of experience or Master’s degree with 2+ years of experience. Additional experience may be considered in lieu of a degree. Active TS/SCI security clearance. Concentrated experience in the CND discipline, regardless of degree. Experience monitoring and investigating alerts from cybersecurity tools. Experience with Security Information and Event Management (SIEM) systems such as Splunk and Elastic. Experience with Network Intrusion Detection/Prevention Systems (NIDPS), such as Cisco FirePower and Palo Alto NGFW, as well as host-based tools such as Trellix ePO, Microsoft Defender, and Tanium. Knowledge of scripting and coding languages such as Python, Perl, Ruby, JavaScript, PowerShell, C, C++, and Java. Knowledge of penetration testing and red team tactics, techniques, and procedures, as well as tools such as Kali, SamuraiWTF, Nmap, Burp Suite, sqlmap, and Metasploit. Knowledge of ticketing systems, report writing, and intelligence gathering, analysis, and dissemination techniques specific to cybersecurity. Strong analytical, conceptual, and problem-solving skills. Required Certifications Must possess one of the following certifications or obtain one within 30 days of accepting an offer: CompTIA CySA+, CompTIA PenTest+, CompTIA Cloud+, EC Council CEH, GIAC GCIA, GIAC GCIH, GICSP, or Cisco CyberOps. NITESONI DABAOPP1 If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: September 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $87,100.00 - $157,450.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission . Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Description Incident Responder (2nd Shift) Location: Suitland, MD Clearance: Active TS/SCI 2nd Shift Work Hours: 1530 – 2330 Leidos is seeking an Incident Responder (2nd Shift) to join a mission focused cybersecurity team supporting the Office of Naval Intelligence (ONI) at the Hopper Global Communications Center (HGCC) in Suitland, MD . In this role, you will serve as a digital first responder, helping defend the Navy's critical maritime intelligence networks against cyber threats. You will respond to and investigate cybersecurity incidents, contain affected systems, limit operational impact, and collect and analyze digital artifacts to support effective response and recovery. Working across the incident response lifecycle, you will collaborate with cybersecurity, intelligence, and investigative partners to help protect highly sensitive TS/SCI environments. Work Location Hours: This is a 2nd shift position with regular work hours of 1530 – 2330. Occasional floater shifts or coverage outside of these hours may be required based on program and staffing needs. Primary Responsibilities Perform all phases of the incident response lifecycle, including detection, analysis, containment, eradication, and recovery. Receive and act on escalations from Tier 1 analysts, conduct spillage response and cleanup activities, and support incident response for TS/SCI networks, including JWICS, ATLAS, and other networks for which HGCC is responsible. Receive and respond to incident notifications from customers via telephone and email. Prepare and submit Electronic Spillage Assessment Forms (ESAFs) to the NNWC Electronic Spillage Center. Monitor Data Loss Prevention (DLP) outputs for classified code words and potential spillage indicators. Coordinate and communicate with internal and external stakeholders, including Special Security Officers (SSOs), Judge Advocate General (JAG), ONI ISSM, Hopper ISSM, CNI, NAVNETWARCOM, IC SCC, NCDOC, NCIS, and other IC and DoD SOC/DCO teams. Maintain detailed and accurate incident documentation and timelines throughout the response process. Participate in incident response meetings, briefings, and after action reviews. Support the execution and evaluation of annual security exercises. Required Qualifications Bachelor's degree in Cybersecurity, Information Technology, Information Assurance, or a related area of study desired with 8+ years of experience or Master’s degree with 6+ years of experience. Additional experience may be considered in lieu of a degree. Active TS/SCI security clearance. Extensive experience in the Computer Network Defense (CND) discipline. Significant professional experience monitoring, analyzing, and investigating alerts generated by cybersecurity tools. Experience with Security Information and Event Management (SIEM) systems such as Splunk and Elastic. Experience with Network Intrusion Detection/Prevention Systems (NIDPS), such as Cisco FirePower and Palo Alto NGFW, as well as host based tools such as Trellix ePO, Microsoft Defender, and Tanium. Knowledge of scripting and coding languages such as Python, Perl, Ruby, JavaScript, PowerShell, C, C++, and Java. Knowledge of penetration testing and red team tactics, techniques, and procedures, as well as tools such as Kali, SamuraiWTF, Nmap, Burp Suite, sqlmap, and Metasploit. Knowledge of ticketing systems, report writing, and intelligence gathering, analysis, and dissemination techniques specific to cybersecurity. Required Certifications Must possess one of the following certifications or obtain one within 30 days of accepting an offer: Certified Ethical Hacker (CEH), CyberSec First Responder (CFR), CompTIA Cybersecurity Analyst (CySA+), GIAC Certified Forensic Analyst (GCFA), GIAC Certified Incident Handler (GCIH), EC Council Certified Incident Handler (ECIH), or Cisco Cybersecurity Specialist (SCYBER). NITESONI DABAOPP1 If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: September 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $107,900.00 - $195,050.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission . Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Description Cyber Defense Analyst (2nd Shift) Location: Suitland, MD Clearance: Active TS/SCI 2nd Shift Work Hours: 1530 – 2330 Leidos is seeking a Cyber Defense Analyst (2nd Shift) to join a mission focused team supporting the Navy's cybersecurity environment at the Office of Naval Intelligence (ONI) Hopper Global Communications Center (HGCC) in Suitland, MD. In this role, you will serve on the front line of cyber defense, helping protect critical TS/SCI networks by monitoring and investigating cybersecurity alerts, identifying potential threats, and supporting proactive threat hunting activities. You will apply your experience in the Certified Network Defender (CND) discipline and knowledge of IT systems and networks to analyze security events, manage incident tickets, support intelligence gathering and analysis, and communicate findings to key stakeholders. Work Location Hours: This is a 2nd shift position with regular work hours of 1530 – 2330. Occasional floater shifts or coverage outside of these hours may be required based on program and staffing needs. Primary Responsibilities Perform first line monitoring of security tools and conduct initial analysis of alerts for TS/SCI networks, including JWICS, ATLAS, and other networks for which HGCC is responsible. Monitor organizational cybersecurity tools for alerts, anomalies, and indicators of compromise. Investigate and perform initial technical analysis of cybersecurity alerts and events, escalating potential incidents to Tier 2 as appropriate. Create, update, and manage incident and event tickets within the approved ticketing system. Conduct proactive threat hunting activities to identify potential malicious activity and emerging threats. Perform wireless security scans of facilities and document and report findings. Correlate alerts and security events across multiple platforms to identify patterns, trends, and potential threats. Prepare and deliver operational and situational awareness briefings. Support annual cyber defense exercises. Required Qualifications Bachelor's degree in Cybersecurity, Information Technology, Information Assurance, or a related area of study desired with 4+ years of experience or Master’s degree with 2+ years of experience. Additional experience may be considered in lieu of a degree. Active TS/SCI security clearance. Concentrated experience in the CND discipline, regardless of degree. Experience monitoring and investigating alerts from cybersecurity tools. Experience with Security Information and Event Management (SIEM) systems such as Splunk and Elastic. Experience with Network Intrusion Detection/Prevention Systems (NIDPS), such as Cisco FirePower and Palo Alto NGFW, as well as host-based tools such as Trellix ePO, Microsoft Defender, and Tanium. Knowledge of scripting and coding languages such as Python, Perl, Ruby, JavaScript, PowerShell, C, C++, and Java. Knowledge of penetration testing and red team tactics, techniques, and procedures, as well as tools such as Kali, SamuraiWTF, Nmap, Burp Suite, sqlmap, and Metasploit. Knowledge of ticketing systems, report writing, and intelligence gathering, analysis, and dissemination techniques specific to cybersecurity. Strong analytical, conceptual, and problem-solving skills. Required Certifications Must possess one of the following certifications or obtain one within 30 days of accepting an offer: CompTIA CySA+, CompTIA PenTest+, CompTIA Cloud+, EC Council CEH, GIAC GCIA, GIAC GCIH, GICSP, or Cisco CyberOps. NITESONI DABAOPP1 If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: September 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $87,100.00 - $157,450.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission . Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Description Incident Responder Location: Suitland, MD Clearance: Active TS/SCI 1st Shift Work Hours: 0730 – 1530 Leidos is seeking an Incident Responder (1st Shift) to join a mission focused cybersecurity team supporting the Office of Naval Intelligence (ONI) at the Hopper Global Communications Center (HGCC) in Suitland, MD . In this role, you will serve as a digital first responder, helping defend the Navy's critical maritime intelligence networks against cyber threats. You will respond to and investigate cybersecurity incidents, contain affected systems, limit operational impact, and collect and analyze digital artifacts to support effective response and recovery. Working across the incident response lifecycle, you will collaborate with cybersecurity, intelligence, and investigative partners to help protect highly sensitive TS/SCI environments. Work Schedule: This is a 1st shift position with regular work hours of 0730 – 1530. Occasional floater shifts or coverage outside of these hours may be required based on program and staffing needs. Primary Responsibilities Perform all phases of the incident response lifecycle, including detection, analysis, containment, eradication, and recovery. Receive and act on escalations from Tier 1 analysts, conduct spillage response and cleanup activities, and support incident response for TS/SCI networks, including JWICS, ATLAS, and other networks for which HGCC is responsible. Receive and respond to incident notifications from customers via telephone and email. Prepare and submit Electronic Spillage Assessment Forms (ESAFs) to the NNWC Electronic Spillage Center. Monitor Data Loss Prevention (DLP) outputs for classified code words and potential spillage indicators. Coordinate and communicate with internal and external stakeholders, including Special Security Officers (SSOs), Judge Advocate General (JAG), ONI ISSM, Hopper ISSM, CNI, NAVNETWARCOM, IC SCC, NCDOC, NCIS, and other IC and DoD SOC/DCO teams. Maintain detailed and accurate incident documentation and timelines throughout the response process. Participate in incident response meetings, briefings, and after action reviews. Support the execution and evaluation of annual security exercises. Required Qualifications Bachelor's degree in Cybersecurity, Information Technology, Information Assurance, or a related area of study desired with 8+ years of experience or Master’s degree with 6+ years of experience. Additional experience may be considered in lieu of a degree. Active TS/SCI security clearance. Extensive experience in the Computer Network Defense (CND) discipline. Significant professional experience monitoring, analyzing, and investigating alerts generated by cybersecurity tools. Experience with Security Information and Event Management (SIEM) systems such as Splunk and Elastic. Experience with Network Intrusion Detection/Prevention Systems (NIDPS), such as Cisco FirePower and Palo Alto NGFW, as well as host based tools such as Trellix ePO, Microsoft Defender, and Tanium. Knowledge of scripting and coding languages such as Python, Perl, Ruby, JavaScript, PowerShell, C, C++, and Java. Knowledge of penetration testing and red team tactics, techniques, and procedures, as well as tools such as Kali, SamuraiWTF, Nmap, Burp Suite, sqlmap, and Metasploit. Knowledge of ticketing systems, report writing, and intelligence gathering, analysis, and dissemination techniques specific to cybersecurity. Required Certifications Must possess one of the following certifications or obtain one within 30 days of accepting an offer: Certified Ethical Hacker (CEH), CyberSec First Responder (CFR), CompTIA Cybersecurity Analyst (CySA+), GIAC Certified Forensic Analyst (GCFA), GIAC Certified Incident Handler (GCIH), EC Council Certified Incident Handler (ECIH), or Cisco Cybersecurity Specialist (SCYBER). NITESONI DABAOPP1 If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: September 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $107,900.00 - $195,050.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission . Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Description Incident Responder (3rd Shift) Location: Suitland, MD Clearance: Active TS/SCI 3rd Shift Work Hours: 2330 – 0730 Leidos is seeking an Incident Responder (3rd Shift) to join a mission focused cybersecurity team supporting the Office of Naval Intelligence (ONI) at the Hopper Global Communications Center (HGCC) in Suitland, MD . In this role, you will serve as a digital first responder, helping defend the Navy's critical maritime intelligence networks against cyber threats. You will respond to and investigate cybersecurity incidents, contain affected systems, limit operational impact, and collect and analyze digital artifacts to support effective response and recovery. Working across the incident response lifecycle, you will collaborate with cybersecurity, intelligence, and investigative partners to help protect highly sensitive TS/SCI environments. Work Schedule: This is a 3rd shift position with regular work hours of 2330 – 0730. Occasional floater shifts or coverage outside of these hours may be required based on program and staffing needs. Primary Responsibilities Perform all phases of the incident response lifecycle, including detection, analysis, containment, eradication, and recovery. Receive and act on escalations from Tier 1 analysts, conduct spillage response and cleanup activities, and support incident response for TS/SCI networks, including JWICS, ATLAS, and other networks for which HGCC is responsible. Receive and respond to incident notifications from customers via telephone and email. Prepare and submit Electronic Spillage Assessment Forms (ESAFs) to the NNWC Electronic Spillage Center. Monitor Data Loss Prevention (DLP) outputs for classified code words and potential spillage indicators. Coordinate and communicate with internal and external stakeholders, including Special Security Officers (SSOs), Judge Advocate General (JAG), ONI ISSM, Hopper ISSM, CNI, NAVNETWARCOM, IC SCC, NCDOC, NCIS, and other IC and DoD SOC/DCO teams. Maintain detailed and accurate incident documentation and timelines throughout the response process. Participate in incident response meetings, briefings, and after action reviews. Support the execution and evaluation of annual security exercises. Required Qualifications Bachelor's degree in Cybersecurity, Information Technology, Information Assurance, or a related area of study desired with 8+ years of experience or Master’s degree with 6+ years of experience. Additional experience may be considered in lieu of a degree. Active TS/SCI security clearance. Extensive experience in the Computer Network Defense (CND) discipline. Significant professional experience monitoring, analyzing, and investigating alerts generated by cybersecurity tools. Experience with Security Information and Event Management (SIEM) systems such as Splunk and Elastic. Experience with Network Intrusion Detection/Prevention Systems (NIDPS), such as Cisco FirePower and Palo Alto NGFW, as well as host based tools such as Trellix ePO, Microsoft Defender, and Tanium. Knowledge of scripting and coding languages such as Python, Perl, Ruby, JavaScript, PowerShell, C, C++, and Java. Knowledge of penetration testing and red team tactics, techniques, and procedures, as well as tools such as Kali, SamuraiWTF, Nmap, Burp Suite, sqlmap, and Metasploit. Knowledge of ticketing systems, report writing, and intelligence gathering, analysis, and dissemination techniques specific to cybersecurity. Required Certifications Must possess one of the following certifications or obtain one within 30 days of accepting an offer: Certified Ethical Hacker (CEH), CyberSec First Responder (CFR), CompTIA Cybersecurity Analyst (CySA+), GIAC Certified Forensic Analyst (GCFA), GIAC Certified Incident Handler (GCIH), EC Council Certified Incident Handler (ECIH), or Cisco Cybersecurity Specialist (SCYBER). NITESONI DABAOPP1 If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: September 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $107,900.00 - $195,050.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission . Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Description Position: Systems Engineer Location: California, MD Clearance: Top Secret Make an Impact with Leidos At Leidos, we deliver innovative solutions through the dedication of our diverse and talented teams. United by a shared commitment to our customers’ success, we empower our people, support our communities, and operate sustainably. Our Mission, Vision, and Values guide every aspect of our work, ensuring we do the right thing—for our customers, our people, and the world around us. Thrive in a Mission‑Focused Environment The Leidos Defense Sector provides advanced systems, solutions, and services across land, sea, air, space, and cyberspace. From enterprise IT and large‑scale intelligence systems to cybersecurity, geospatial analytics, logistics, and training, we support some of the nation’s most critical defense missions. Our teams take on challenges where failure is not an option—and succeed. We are seeking a cleared Systems Engineer with military weapons systems experience in support of a systems engineering effort. The successful candidate will analyze, design and evaluate software based systems, components, and/or systems related to engineering and functional requirements of command and control systems and the associated support systems. Primary Responsibilities Apply engineering principles to investigate, analyze, plan, design, develop, and/or evaluate requirements for military weapons systems. Review and prepare engineering and technical analyses, reports, change proposals, and other technical documentation. Apply systems engineering experience to perform functions such as requirement elicitation, requirements management, requirements tracing, system integration, and configuration management. Manage requirements and ensure traceability via COTS requirements management software. Basic Qualifications Bachelor’s degree with 8+ years of related experience. Additional experience, training, and/or certifications may be considered in lieu of degree. US Citizen; Currently possessing an active DoD Top Secret clearance with ability to upgrade to a TS/SCI clearance upon hire. Strong knowledge of systems engineering or related technical or scientific field such as electrical, mechanical, electronics engineering, engineering, physics, chemistry, biology, mathematics, operations research, engineering management, or computer science with 8+ years of experience in systems engineering or an engineering/science field supporting precision guided missile systems Preferred Qualifications Certified Systems Engineering Professional Accreditation. Experience with requirements management tools (DOORS). Experience with DODAF Architecture. Experience working in an Agile Environment. Experience with Model Based Systems Engineering Ready to make an impact? Start your next career chapter with Leidos— apply today! If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: September 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $107,900.00 - $195,050.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission . Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Description Leidos is seeking a proven technical program management leader with deep experience leading large‑scale mission software development, full‑lifecycle modernization , and distributed engineering organizations. The ideal candidate has directed complex software programs , overseen multi‑discipline teams delivering secure, high‑performance capabilities, and demonstrated authoritative leadership across architecture, integration, DevOps, cyber, and cloud environments. Candidates must bring hands‑on credibility in software development and sustainment, not just program oversight, with a track record of delivering mission‑critical systems for the Department of Defense and Intelligence Community. This role requires meaningful technical credibility, disciplined program leadership, and demonstrated success running large‑scale, full‑lifecycle software development and sustainment programs exceeding $20M/year. Consider that Mission System Modernization is a continually challenging requirement that demands modernization of legacy mission systems into secure cloud, hybrid, or containerized architectures, ensuring resilience, scalability, and future ready capability delivery. Key Responsibilities Technical Program Leadership of Large-Scale Program : Direct full‑lifecycle development, integration, deployment, and sustainment of mission software systems spanning analytics, cyber, geospatial, and enterprise data workflows. Mission‑Critical Delivery : Oversee development and sustainment of classified systems of systems supporting warfighter intelligence, operational planning, and strategic decision‑making using Agile Execution methodologies and strategies to implement and enforce enterprise Agile practices, Program Increment Planning, CI/CD pipelines, and rapid prototyping methodologies across distributed teams. Customer Engagement & Strategy : Serve as the autonomous senior interface to government sponsors, shaping technical direction, resolving issues, and driving mission‑aligned growth. Program Leadership : Develop and execute program with disciplined accountability of technical, schedule, and financial matters to maintain performance baselines and embolden customer confidence. Innovation & Prototyping : Drive rapid prototyping, IR&D initiatives, and technical fellowship‑level solutioning to accelerate mission capability insertion and expand program growth opportunities. Basic Qualifications Bachelor’s degree and 15+ years of experience in software‑intensive program leadership; or Master’s degree with 12+ years ; or equivalent experience. Active TS/SCI with ability to obtain a polygraph once hired. Demonstrated leadership of large, geographically distributed engineering organizations delivering mission software across classified and unclassified environments. Distribution must be at least two or more physically/geographically separated locations. Proven success managing $20M+/year software development and sustainment portfolios. Deep experience with full‑stack software development , DevOps, CI/CD, cloud, cyber, and enterprise data systems. Exceptional written and verbal communication skills spanning technical, operational, and executive audiences. Experience supporting business development , technical solutioning, and major proposal efforts with hands on knowledge/development of BOEs, RFP/RFI response generation. Preferred Qualifications Active TS/SCI with polygraph. Experience delivering mission‑critical classified systems for the Department of Defense and Intelligence Community. Background in software architecture , cyber innovation, AI/ML integration, modeling/simulation, or enterprise modernization. Experience leading multi‑discipline teams of 100+ personnel across diverse technical domains. Demonstrated ability to recover troubled programs , re‑establish technical execution, and deliver under high‑visibility conditions. Experience driving IR&D , rapid prototyping, and technical innovation pipelines aligned to mission needs. #NSBA If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: September 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $154,050.00 - $278,475.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission . Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Description Leidos has a new and exciting opportunity for a Senior Information System Security Officer in our INTEL SECTOR: Cyber & Analytics Business Area (CABA) . Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos , we offer competitive benefits , including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security! Senior Information System Security Officer (ISSO) Leidos currently has an opening for a Senior Information System Security Officer (ISSO) to work at our Annapolis Junction, MD location. The selected candidate will act as an ISSO for a large software development program which includes software maintenance and development, IT support (Network/Workstation/Server), systems integration and life cycle support, enterprise application development, network engineering, and information systems security (ISS). The candidate will work with other security professionals in developing and implementing strategies to detect and mitigate threats to information systems, protect critical data sets, and provide assessments of system and network vulnerabilities. Primary Roles and Responsibilities Provide support for implementing and enforcing information systems security policies, standards, and methodologies. Assist in the evaluation of security solutions to ensure they meet security requirements for processing multiple types of information. Assist with the Configuration Management for information system security software, hardware, and firmware. Analyze threats and develop and implement best practice methodologies for incident detection, reporting, and vulnerability remediation. Maintain records on workstations, servers, routers, firewalls, intelligent hubs, network switches, etc. to include system upgrades. Evaluate security solutions to ensure they meet security requirements for processing information. Maintain operational security posture for information systems. Provide support to the Information System Security Manager (ISSM) for maintaining the appropriate operational IA posture for a system/program/enclave. Develop and maintain documentation for Certification & Accreditation in accordance with specified policies. Develop and update system security plans and other IA documentation. Provide support for Information Assurance Vulnerability Alerts (IAVAs) management (initiating IAVA responses and system security scans, completing remediation, extending IAVA patches and security updates to designated sites, etc.). Provide CM for security-relevant information system software, hardware, and firmware. Develop system security policy and ensure compliance. Administer the user identification and authentication mechanisms of the Information System. Basic Qualifications Bachelor’s degree in a related field and at least 17 years of relevant experience or Master's degree with 15 years of experience. Additional experience may be substituted for a degree. TS/SCI with polygraph security clearance. Must have at least 10 years of experience as ISSO working independently, and/or on teams maintaining secure information system operations in isolated, connected and standalone environments. Must have at least 5 years of experience using tools to support IAVA management. Must have at least 5 years of experience using tools to support the preparation, maintenance, and management of SSPs and other security related documentation. Demonstrated knowledge of and experience with several of the following: current security tools; hardware/software security implementation; communication protocols; encryption techniques/tools. In-depth experience completing security evaluations of software systems or architectures to ensure they meet security requirements. In-depth experience proposing, coordinating, implementing, and enforcing information systems security policies, standards, and methodologies, preferably on a large software or IT program. Demonstrated experience performing day-to-day security operations of large, complicated information and information processing systems. Must be committed to developing and adhering to best practices. Must possess a high level of self-initiative and must be a solutions-oriented team player. Must have excellent interpersonal skills. Preferred Qualifications Extensive experience as an Information Systems Security Officer on large software development and integration programs. DoD 8570 compliance with IAT Level II or higher. DoD 8570 compliance with IAM Level II or higher. At Leidos , the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you – apply today. careers.leidos.com/CONMD CSSKEY CONMD If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: September 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $154,050.00 - $278,475.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission . Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.