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🥝 Tier 3 System Administrator – TS/SCI with Polygraph

General Dynamics Information Technology | Aurora, United States | Posted June 03, 2026

Job Description

**Req ID:** RQ218262
**Type of Requisition:** Regular
**Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph
**Public Trust/Other Required:** None
**Job Family:** IT Infrastructure and Operations
**Skills:**
Linux,Microsoft Windows,System Administration
**Experience:**
5 + years of related experience
**US Citizenship Required:**
Yes

**Job Description:**

General Dynamics Information Technology (GDIT) is seeking a Linux/Microsoft Systems Administrator to join our team in support of a Federal Intelligence Agency contract. In addition to receiving a competitive salary and generous health and personal benefits, the Systems Administrator will enhance their skill set among a talented and technically accomplished group of colleagues.

Primary responsibilities include providing Tier II support of maintaining multiple large Enterprise environment. The supporting infrastructure includes multiple Microsoft based networks ...

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