Systems Admin Sr Adv (TS/SCI with Poly Required)

Location: Chantilly, VA, USA; VA, USA; 1
Employment type: Full-time
Posted: Jun 9, 2026
Last seen: Aug 7, 2026

About the role

GCI embodies excellence, integrity, and professionalism. The employees supporting our organization deliver unique, high value solutions while effectively leveraging the technological expertise of our valued workforce to meet critical mission requirements providing IT services. GCI has a vacancy for a Senior System Administrator.