Sr. Information Systems Security Engineer (ISSE)

ManTech (


  Full Time   Employee   Contractor


United States

Become an integral part of a diverse team that leads the world in the Mission, Cyber, and Intelligence Solutions group. At ManTech International Corporation, you will help protect our national security while working on innovative projects that offer opportunities for advancement.

Currently, ManTech is seeking a motivated, career and customer oriented Sr. Information Systems Security Engineer (ISSE) to join our team in the Washington, DC area to provide unparalleled support to our customer and to begin an exciting and rewarding career within ManTech.

Responsibilities include, but are not limited to:
1. Defines, plans, designs, and evaluates information security systems and architecture
2. Performs requirements analysis, design, and integration for complex software applications and collaboration infrastructures
3. Writes implementation and design documents describing how security features are implemented
4. Serves as the lead technical subject matter (SME) on cyber/systems security matters
5. Employs best practices and lessons learned when implementing security including software engineering methodologies, system/security engineering principles, secure design, and secure architecture
6. Provides system security engineering support in designing and integrating automated information systems auditing capabilities
7. Conduct certification testing and reporting in accordance with the Risk Management Framework (RMF) and NIST 800-53; identifies deficiencies (POA&M) and provides recommendations for solutions
8. Implements a strategy for continuous monitoring for assigned systems including: Establishing system audit trails and ensuring their review, reporting all identified security findings and initiating the periodic review of security controls
9. Ensure that ISs are operated, maintained, and disposed of in accordance with approved security policies and practices
10. Develops, implements, and enforces information systems security policies.
11. Ensures that system security requirements are addressed during all phases of the IS lifecycle
12. Ensures implementation of a Configuration Management Plan (CMP) for software, hardware, and firmware is documented and maintained, and serve as a member of the Configuration Management Board, with Information System Security Manager (ISSM) and System Owner concurrence.
13. Author or coordinate the development of System Security Plans (SSP) and other required system plans, e.g., Configuration Management Plan (CMP), Contingency Plan (CP), Continuity of Operations (COOP) and Disaster Recovery Plan (DRP) (as required) , and Incident Response Plan (IRP).
14. Support risk assessment and evaluation activities throughout the Security Assessment and Authorization (SAA) process
15. Ensure a process for managing changes in user access to ISs (as required access and need-to-know change) and for terminating user access when it is no longer required or authorized, according to established policy requirements.
16. Ensure compliance with annual Federal Information Security Management Act (FISMA) deliverables and reporting, if required for assigned ISs
17. Ensure security awareness and precautionary measures are exercised to prevent introduction and/or proliferation of malicious code or other adverse IS conditions. This includes exercise of continuity and/or disaster recovery plans, as required
18. Initiate, with ISSM or CSO approval, protective and corrective measures when a security incident or vulnerability is discovered. Monitor IS recovery processes and ensure proper restoration of IS security features
19. Oversee IS recovery processes for all unplanned outages, including Disaster Recovery and initiation of the CP, whether actual or exercise
20. Advises the System Owners regarding security considerations in the various applications
21. Serves as a resource for users concerning all security questions regarding assigned systems and applications
22. Ensure that all users have the requisite security clearances, authorization, and need-to know before granting access to the IS, and administer/witness signing of user agreements and or Rules of Behavior
23. Research and maintains knowledge of Information Assurance (IA) policies and practices, seeking clarification from the ISSM or higher authority when needed, and disseminates these to users

Position Requirements:
1. Requires Bachelor?s degree or equivalent in the fields of mathematics, telecommunications, electrical engineering, computer engineering, or computer science and 10-12 years related experience; or Master?s degree with 7-9 years of experience
2. Requires expert technical knowledge in security engineering and IT systems engineering
3. Must possess excellent analytical skills and be capable of quantifying risk to enterprise systems and level of compliance with security policy
4. Experience with modern Windows, UNIX, network operating systems, databases, and virtual computing
5. Strong IT system and application engineering background with experience in cloud computing, Windows desktop and server, Active Directory Group Policy, SQL, networking, and auditing
6. Experience with certification testing, Risk Management Framework (RMF), information assurance tools, DoD STIG, and vulnerability assessment
7. CISSP is required. Candidates that do not current have a CISSP must be able to qualify and pass the certification within 6-9 months of hire.
8. SPLUNK experience highly desired
9. Knowledge of information security engineering, design concepts and principles.
10. Knowledgable with Systems Development Lifecycle (SDLC) methodologies and continuous monitoring activities
11. Extensive experience analyzing information technology and system risk in complex environments and articulating results (verbal/reports) to all levels of management.
12. Demonstrated experience conducting information system security controls assessments (SCAs) and appling standard auditing techniques during system security controls assessments, including the proper interpretation of the control requirements, determining if the artifacts provided are sufficient, and recommending remedial actions to the customer to ensure compliance
13. Demonstated experience writing information system security documentation (SSPs, POA&Ms, PTAs, PIAs, CMPs, CPs and IRPs).
14. Extensive knowledge and experience with information security standards, policies and practices - NIST (800-53 rev4), FISCAM , FISMA, DOD, DCID, FBI, etc.
15. Ability to research and address information security issues as required, being an authority on the subject.
16. Must be a team player with "can do" attitude. Must be able to work independently with initiative and innovation.
17. Well versed with using vulnerability assessment tools (NESSUS, AppDetective, etc.) and analyzing the results generated from these assessments
18. Proven ability to multi-task and deliver on-time with the highest quality
19. Exceptional interpersonal, verbal, and written communication skills, with the ability to collaborate well across teams and organizations, including interactions with senior-level executives. Candidates must be fluent in the English language.

Security Requirements:


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