Senior Systems Administrator — DoD Mission IT & Cyber Operations

The One 23 Group in Herndon, Virginia is seeking a Senior System Administrator to provide Tier I/II/III systems administration and IT operations support in classified environments. Candidates must hold an active Top Secret security clearance and DoD IAT Level II certification, with a minimum of 5 years of relevant experience. The role includes responsibilities like system administration, backup and recovery, and operational support for mission-critical platforms.

This is an on-site position at the Pentagon during day shifts.
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