Communications Systems Administrator: TS/SCI clearance with Poly

Clearance Level
Top Secret SCI + Polygraph
Systems Engineering
Chantilly, Virginia

REQ#: RQ110083

Travel Required: Less than 10%
Requisition Type: Regular

Job Description / Responsibilities:  

Candidate will perform operations and maintenance (O&M) of one or more unique communications systems.  Job functions include maintaining/monitoring networked computer systems and troubleshooting issues. O&M requires maintaining custom system(s) with current security patches, anti-virus protection, system backups, monitoring server health, collection/review of audit logs, up-to-date operating systems and associated scripting.

Required and Preferred Skills and Qualifications:


  • Previous experience as a systems administrator
  • Understanding of network systems and thorough understanding of TCP/IP
  • Excellent written communication skills, articulate and proactive
  • Some experience with Unix-based systems administration (e.g. Linux)
  • Some practical experience with OpenVPN and IPSec tunneling
  • Linux O/S and kernel development, esp. in networking, packet filtering, and configuring Linux IPTables
  • Familiarity with all audit logs and performing system backups
  • Managing user accounts and data access controls with Active Directory Services along with administering Domain Name System (DNS)
  • Previous experience with anti-virus scanning/updates
  • Strong debugging, troubleshooting, and performance-tuning skills
  • Ability to follow good engineering and programming practices
  • Strong team player and independent contributor
  • Communicate effectively with peers and support staff to highlight and clarify software and system design elements


  • Prior experience within the IC
  • Experience with wi-fi communications

Additional Information:

  • The work will be performed at GCI’s Chantilly location
  • Very low travel requirements

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 the status of the federal contractor mandate and 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.