Systems Administrator

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 ll 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 Systems Administrator to join our team in the Bethesda, MD area to provide unparalleled support to our customer and to begin an exciting and rewarding career within ManTech.
The selected individual will implement solutions in accordance with organizational needs, while investigating & resolving operational problems in conjunction with engineering and technical personnel.

Responsibilities include, but are not limited to:

  • The selected candidate will provide support regarding computer and network services for both local and wide area networks, serves as a high-level technical expert in regards to computer/network systems and associated issues
  • Installs, configures, and maintains computer and network operating system and application software, as appropriate
  • Maintain a broad knowledge of current and emerging state-of-the-art computer/network system technologies, architectures, and products
  • Provide on-call support for computer/network systems as required. Perform miscellaneous job-related duties as assigned
  • Provision and maintain secure RHEL and Microsoft Windows Servers
  • Supports physical and virtual servers of multi-tiered HA/Clustered applications and databases
  • Manage virtual servers through VMware vCenter
  • Implement High Availability, Database Availability Groups (DAG) and Active
  • Implement clear and concise Group Policy Objects (GPO)
  • Implement and maintain backup/disaster recovery solutions for guest servers and associated data
  • Perform system management using Symantec ITMS and Red Hat Satellite Server
  • Perform task automation through the creation of scripts
  • Knowledge and understanding of a range of computer and networking software and hardware systems and related technologies
  • Work effectively with cross-functional teams to define technical requirements and identify and resolve technical design issues
  • Collaborate with client, server and other internal/external teams to identify support and technology advancements
  • Produce clear and concise documents and diagrams capturing networking and operational procedures and LAN/WAN topology using MS Visio, MS Project, MS Excel and MS Word
  • Provide technical support, troubleshooting and complex problem resolution on escalated issues

Position Requirements:

  • Bachelor’s degree in Computer Science, Math, Electrical Engineering, or related field; or equivalent industry qualifications and two or more years of relatedWorking experience with HP C class server platforms, management tools insight manager / advanced ILO”
  • Working experience with configuring and deploying Microsoft Windows servers using Windows Deployment Services or VMware templates
  • Working experience with configuring and deploying RHEL servers using a kickstart server or VMware templates
  • Experience with application performance and latency problems from front, middle and Back End
  • Working experience with Windows Server 2008/2012 and RHEL 5/6
  • Working experience with Active Directory, DNS, DHCP, NTP, IIS, and Apache HTTP Server
  • Experience implementing and supporting enterprise system monitoring tools
  • Experience performing system hardening through GPO and scripts
  • Solid network and systems troubleshooting experience with TCP/IP, Internet security, encryption
  • Ability to analyze and assess computer/network architecture requirements and determine optimum, cost-effective solutions
  • Knowledge of computer security systems, applications, procedures, and techniques to meet qualification of DoD 8570.01M CAT II IAT
  • Security+(Required)
  • Red Hat Certified System Administrator (RHCSA) (Desired)
  • Microsoft Certified Solutions Associate Windows Server 2008 (MCSA) (Desired)
  • VMware Certified Professional 5 (VCP) (Desired)

Security Requirements:

TS/SCI with the ability to obtain a CI Polygraph within 90 days.


To apply for this job, contact:
Human Resources

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