Senior Systems Administrator - TS/SCI with Polygraph

Clearance Level
Top Secret SCI + Polygraph
Category
IT Infrastructure and Operations
Location
Reston, Virginia
(Onsite Workplace)
Key Skills For Success

Critical Systems

Information Technology (IT) Systems

IT Troubleshooting

REQ#: RQ228707
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

SYSTEMS ADMINISTRATOR SME

Advance how our customers operate while you advance your career. Join GDIT as a Systems Administrator SME and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you.

MEANINGFUL WORK AND PERSONAL IMPACT

  • Plans, designs, and implements infrastructure changes and system upgrades.
  • Manages and troubleshoots multiple VMware environments.
  • Provides Windows Server and Linux administration, maintenance, and troubleshooting.
  • Creates STIG compliant images for Windows Desktop, Windows Server, and Linux OS.
  • Creates, tests, and deploys software packages using software deployment products such as SCCM, PDQ, etc.
  • Provides expert level support and mentoring for Mid and Junior Systems Administrator personnel.
  • Develops and maintains installation and configuration procedures for system and software changes.
  • Utilizes scripting to automate common tasks.
  • Performs hardware maintenance/repair activities.
  • Ensures proper planning and execution of major projects/maintenance activities.
  • Provides advanced level administration and troubleshooting of Active Directory, GPO, DNS, DHCP, and Domain Controllers.  


WHAT YOU’LL NEED TO SUCCEED
Bring your technology expertise and drive for innovation to GDIT. The Systems Administrator SME must have:

  • Ability to write scripts using PowerShell and/or Bash.
  • Experience managing VMware, Nutanix, and other types of enterprise level Virtual Infrastructures.
  • Proficient in managing and troubleshooting Active Directory and Group Policy Object (GPO).
  • At least 10 years of relevant experience.
  • Security + Certified; Must presently be 8570 compliant (IAT Level 2 preferred)
  • Bachelor of Arts/Bachelor of Science in a field applicable to this work
  • US Citizenship Required
  • TS/SCI with CI Poly

Desired Qualifications:

  • Linux OS (CentOS, RHEL) administration.
  • Satellite server administration.
  • Ansible playbook writing.
  • Implementing STIGs.


GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.
● Growth: AI-powered career tool that identifies career steps and learning opportunities
● Support: An internal mobility team focused on helping you achieve your career goals
● Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
● Community: Award-winning culture of innovation and a military-friendly workplace

OWN YOUR OPPORTUNITY
Explore an enterprise IT career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

#VA_2026Alumni

#GDITEnhanced2026

#GDITCareers

#JET

Work Requirements

Years of Experience

10 + years of related experience

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

Certification

Travel Required

None

Citizenship

U.S. Citizenship Required

Salary and Benefit Information

The likely salary range for this position is $165,750 - $224,250. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.
View information about benefits and our total rewards program.

Our Identity Verification Process

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.

Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans