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Senior It Systems Administrator Jobs in United States

System Administrator, Senior, or LSO – Markets - Temporary

Idaho Power Company - Boise, Idaho
Senior System Administrator

Alliance Defending Freedom - United States
Senior Cleared Windows Systems Administrator

General Atomics - Charlottesville, Virginia
Senior Systems Administrator - Directory Services, ICAM, & ZTA

TekSynap - Denver, Colorado
Senior System Administrator

Insight Global - Berkeley, California
Senior Systems Administrator

Leidos - Greenbelt, Maryland
Senior Linux System Administrator 2025-4599

Integration Innovation, Inc. - Vicksburg, Mississippi
Systems Administrator, Senior

General Dynamics Information Technology - Springfield, Virginia
Senior System Administrator

SAIC - ARLINGTON, Virginia
Senior Systems Administrator

Raft LLC - Colorado Springs, Colorado
Senior Systems Administrator

ActiveProspect, Inc. - Austin, Texas
Senior System Administrator

Parsons Corporation - Aurora, Colorado
Senior System Administrator - Hardware Engineering (Onsite)

RTX Corporation - Fullerton, California
Senior System Administrator

Parsons Corporation - Denver, Colorado
Senior UNIX/Linux Systems Administrator

BAE Systems - Hudson, New Hampshire
Senior Systems Administrator (Unix/ Linux) (Contingent)

First Division Consulting - Dahlgren, Virginia
Senior System Administrator

Integration Innovation, Inc. (i3) - Vicksburg, Mississippi
Senior Linux System Administrator

Integration Innovation, Inc. (i3) - Vicksburg, Mississippi

Senior Systems Administrator

The Boeing Company - Herndon, Virginia
Senior Systems Administrator

The Boeing Company - Herndon, Virginia
System Administrator or Senior

Idaho Power Company - Boise, Idaho
Senior Systems Administrator (MECM)

TEKsystems - Fort Stewart, Georgia
Systems Administrator Senior Advisor - Secure Communications Services

General Dynamics Information Technology - Washington, District Of Columbia
Senior System Administrator | Information Technology

Rockefeller University - New York, New York
Senior System Administrator

BCMC - Ft. Meade, Maryland
Senior Windows Systems Administrator

The Boeing Company - Hazelwood, Missouri
Senior Linux Systems Administrator

The Boeing Company - Hazelwood, Missouri
PART TIME - Senior Linux System Administrator (TS/SCI with Poly/NEW HIRE SIGN-ON BONUS UP TO $30,000)

General Dynamics Information Technology - Annapolis Junction, Maryland
Systems Administrator (Associate and Senior Level)

Link Solutions Inc - Fort Leonard Wood, Missouri
Systems Administrator (Intermediate and Senior Level)

Link Solutions Inc - Fort Knox, Kentucky
Senior Linux System Administrator (TS/SCI with Poly/NEW HIRE SIGN-ON BONUS UP TO $30,000)

General Dynamics Information Technology - Annapolis Junction, Maryland
Senior Linux Systems Administrator

Leidos - Huntsville, Alabama
Senior System Administrator

Amentum - Dahlgren, Virginia
Senior System Administrator (International Assignment) Ramstein Air Base, Germany *NO REMOTE WORK**

Parsons Corporation - Centreville, Virginia
Senior Linux System Administrator

General Dynamics Information Technology - Livermore, California
Senior System Administrator

Leidos - Lorton, Virginia

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