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Senior Systems Administrator - TS​/SCI Clearance; Polygraph

Listing for: Reflexive Concepts, LLC
Full Time position Listed on 2026-11-14
Job specializations:
Salary/Wage Range or Industry Benchmark: 110000 - 160000 USD Yearly USD 110000.00 160000.00 YEAR

Job Description & How to Apply Below

Position: Senior Systems Administrator - TS/SCI Clearance (Polygraph)

Reflexive Concepts, LLC is seeking a Senior Systems Administrator to join a small, autonomous team supporting secure enclave development networks. You will conduct testing, develop SOPs, and maintain system security while managing access and recovery procedures.

The role requires extensive Windows and Linux administration, VMware expertise, and DoD RMF knowledge, with an active TS/SCI clearance and Full-Scope Polygraph.

This is a genuine position to take on the Senior Systems Administrator - TS/SCI Clearance (Polygraph) role at Reflexive Concepts, LLC.

The Senior Systems Administrator - TS/SCI Clearance (Polygraph) position in the IT & Technology field is open for applications.

We have an opening for a Senior Systems Administrator - TS/SCI Clearance (Polygraph) in Linthicum, MD, United States within IT & Technology.

This role, Senior Systems Administrator - TS/SCI Clearance (Polygraph) at Reflexive Concepts, LLC, could be your next career step.

Position Requirements

10+ Years work experience
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