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System Administrator– TS​/SCI Clearance, Security Clearance

Job in Fort Belvoir, Fairfax County, Virginia, 22060, USA
Listing for: Synertex
Full Time position
Listed on 2026-07-22
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Administrator, Cloud Computing: Infrastructure & Operations, Systems Engineer
Job Description & How to Apply Below
Position: System Administrator– Must have an active TS / SCI Clearance, with Security Clearance
Synertex is seeking a exceptionally skilled Systems Administrator to support our Classified Cyber Operations Client in Ft. Belvoir, VA, enabling high-impact red team operations through secure, resilient, and well-managed infrastructure and environments. Benefits include competitive PTO, 11 Paid Government Holidays, a 401k with 6% match, and a comprehensive list of health care options. Clearance: TS/SCI RESPONSIBILITIES:
* Administering sensitive operational and developmental networks and systems supporting DTRA Advance Red Cyber mission needs.
* Managing Windows Active Directory environments, hypervisors, Linux and Windows virtual machines, and Apache web servers.
* Operating and maintaining AWS cloud instances in support of program infrastructure.
* Managing and securing network firewalls to protect sensitive environments and services.
* Supporting modern infrastructure patterns including microservices (Kubernetes), infrastructure as code (Terraform), and containerization (Docker). REQUIREMENTS:
* 3+ years of experience administering sensitive networks and systems in accordance with DoD cybersecurity policies, procedures, and best practices.
* Experience managing Windows Active Directory environments.
* Experience with hypervisors.
* Experience supporting Linux and Windows virtual machines.
* Experience with Apache Web Servers.
* Experience with AWS cloud instances.
* Experience managing network firewalls.
* Experience with microservices (Kubernetes), infrastructure as code (IaC) such as Terraform, and containerization tools like Docker. DESIRED

QUALIFICATIONS:

* Strong communication skills and comfort working in a mission/customer-facing environment.
* Willingness and ability to travel up to 15% (CONUS/OCONUS).
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