Systems Administrator- TS/SCI with Polygraph

Clearance Level
Top Secret SCI + Polygraph
Systems Administration
Springfield, Virginia
Onsite Workplace
Key Skills For Success

COTS Implementations

Microsoft Windows

System Administration

REQ#: RQ148240
Public Trust: None
Requisition Type: Regular
Your Impact

Own your opportunity to serve as a critical component of our nation’s safety and security. Make an impact by using your expertise to protect our country from threats.

Job Description

Deliver simple solutions to complex problems as a Systems Administrators at GDIT. Here, you’ll tailor cutting-edge solutions to the unique requirements of our clients. You’ll make the end user’s experience your priority and we’ll make your career growth ours.

At GDIT, people are our differentiator. As a Systems Administrators you will help ensure today is safe and tomorrow is smarter. Our work depends on a Systems Administrators with Linux and Windows Infrastructure experience to manage and maintain mission-critical operational IT systems and mission applications in Springfield, Virginia.


As the Systems Administrator on this contract, you will be on an engineering team that provides IT Systems Administration support to global real-time operational activities. Critical thinking and troubleshooting skills are essential to resolving operational problems and clear communications and briefing skills are essential when communicating with the team, its users, and individuals in leadership roles. 

You must be willing/able to work core hours between 6:00 am to 6:00 pm during the week and participate in on-call rotation for after-hours support.


  • Provides Tier II support of IT infrastructure systems and custom mission applications based on a mixed Linux and Windows environment.
  • Create, manage, and maintain accounts and group membership in Active Directory, LDAP, TACACS, KVM
  • Experience managing Windows-based virtual server environments.
  • Hands-on working knowledge of RedHat 5 & 7 along with Windows server 2008, 2016, and Windows 10 operating systems in physical and virtual environments
  • Responsible for pro-active systems monitoring and evaluation of environments using Nagios and the documentation, resolution, or escalation of any problems discovered.
  • Responsible for daily backup monitoring and troubleshooting using Symantec NetBackup version 8.
  • Experience with Linux and Windows patching in an operational environment
  • Ensure all Linux and Windows-based systems are running current versions of antivirus software with current virus definition files; Experience with ClamAV and Windows EPO is a plus.
  • Ability to work with systems engineers and factory support for troubleshooting and resolution of system anomalies.
  • Participates in special projects as required.


Technical Training, certifications, degree, or the equivalent combination of education or work experience.


  • Must have Active TS/SCI with Polygraph and must be willing able to upgrade to higher level polygraph.
  • Experience installing and configuring various COTS products.
  • Experience providing physical and virtual support, maintenance, and security for Red Hat (RHEL 5 & 7), Sun Solaris, Windows Server 2008 & 2016, and Windows 7/10 Desktop
  • Experience with Nagios, Active Directory, NetBackup.
  • Experience with Authentication and Account Management (Active Directory, DNS, LDAP, TACACS, Local, KVM))
  • Experience with virtualization (VMWare, ESXi, VCenter)
  • Experience with SAN (EMC, NAS/DAS)
  • Hardware experience: servers, workstations, peripherals, tape robots
  • Database experience (Oracle, SQL Server).

Would be Nice to Have:

  • Prior Real-time operations/mission systems experience
  • Red Hat Certification
  • Automation Concepts (Puppet)
  • Experience with Splunk, WebLogic, High-Speed Guards, F5 Load Balancers
  • Familiarity with Cisco switches and firewalls
  • Experience with SQL database queries and troubleshooting
  • Tape Library/ Backups (Symantec NetBackup)
  • Scripting and coding experience (Bash, PowerShell, Python).

● Education: Technical Training, certifications, degree, or the equivalent combination of education or work experience.
● Required Experience: 3+ years’ experience
● Security Clearance Level: TS/SCI with polygraph
● Location: Springfield, VA 
●US Citizenship Required

● 401K with company match
● Comprehensive health and wellness packages
● Internal mobility team dedicated to helping you own your career
● Professional growth opportunities including paid education and certifications
● Cutting-edge technology you can learn from
● Rest and recharge with paid vacation and holidays.

    Work Requirements
    Years of Experience

    3 + years of related experience

    * may vary based on technical training, certification(s), or degree


    CompTIA - Security+ CE - CompTIA

    Travel Required

    Less than 10%


    U.S. Citizenship Required

    About Our Work

    We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

    COVID-19 Vaccination

    GDIT does not have a vaccination mandate applicable to all employees. To protect the health and safety of its employees and to comply with customer requirements, however, GDIT may require employees in certain positions to be fully vaccinated against COVID-19. Vaccination requirements will depend on customer site requirements.

    GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.