Senior Redhat Linux Systems Administrator

**Active Top Secret Clearance Required**

Description

At The One 23 Group, our mission is to set the benchmark for excellence in government services. We empower our clients in the Department of War, Intelligence Community, and Federal Civilian sectors to excel with our advanced capabilities. Our dedication lies in fostering a people-first culture, underpinned by steadfast ethical principles. Embracing innovative technologies and process improvements, we are steadfast in our journey toward a future that is both bright and transformative.

Our expertise spans Enterprise IT, Mission IT and Cyber. With our global footprint, we place a strong emphasis on nurturing our people and culture, which forms the core of our successful strategies in leadership and financial management. We pride ourselves on our extensive experience and effective approach, ensuring that we lead with both innovation and integrity.

Position Summary

The Senior Linux Systems Administrator provides Tier II/III administration and operational support for Red Hat Enterprise Linux (RHEL) and UNIX server environments supporting JSSC Enterprise Services. Based primarily at the Pentagon, this position supports GCCS-J and JPES mission environments across production, test, and development systems. Responsibilities include server administration, troubleshooting, patching, performance monitoring, security compliance, backup and recovery coordination, configuration management, and technical documentation.

The position requires an active Top Secret clearance, eligibility for SIPRNet access, participation in a 24/7 on-call rotation, and the ability to support continuity-of-operations requirements at Site-R when designated.