System Administrator - TS/SCI Poly required

We’re seeking a highly experienced System Administrator with strong, quantifiable Linux system administration expertise. In this role, you’ll support a wide range of IT systems across multiple environments, working with modern automation tools, hyperconverged infrastructure, and container-based technologies. You’ll join a mission-focused team where your technical depth, troubleshooting skills, and ability to keep systems running smoothly will make a direct impact every day.

What You’ll Work On * Implementing, troubleshooting, and maintaining IT systems across diverse environments * Providing Tier 1 and Tier 2 support, including problem identification, diagnosis, and resolution * Managing daily configuration and operations of IT systems * Assisting users with system access and usage * Monitoring and resolving issues across client/server, storage, network, and mobile devices * Escalating and communicating system status to management and internal customers * Optimizing system operations, resource utilization, and capacity planning * Performing in-depth troubleshooting and analysis for complex IT issues * Supporting dispatch and hardware problem resolution * Configuring and managing UNIX and Windows operating systems * Installing, maintaining, and enhancing operating system software and network components * Supporting system and mission architecture design * Applying knowledge of system administration interdependencies within a Service-Oriented Architecture (SOA) * Analyzing and resolving complex server hardware, application, and integration issues, Hyperconverged Infrastructure (HCI) solutions such as: o Azure Stack HCI o Cisco HyperFlex o DataCore SANsymphony o Dell VxRail o HPE SimpliVity o Nutanix HCI o NetApp HCI o Scale Computing Platform

15+ years of System Administration experience supporting programs of similar scope and complexity * Bachelor’s degree in a technical discipline + Five additional years of SA experience may be substituted for the degree * IAT Level II certification (per DoD 8570.01-M)