System Administrator- Must have an active TS / SCI Clearance, Ft. Belvoir, VA

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).