Overview AMERICAN SYSTEMS, a 100% employee-owned federal contracting company, is seeking a Senior Systems Administrator with strong Red Hat Linux CLI and Windows administration experience to support a Special Access Program in Washington, DC. This role focuses on owning and optimizing enterprise Linux & Windows infrastructure across multiple datacenters, partnering with cybersecurity and engineering teams, and providing Tier III support for systems that cannot fail. Role includes a $5,000 sign-on bonus in addition to a generous compensation package! Responsibilities As a Sr. Systems Administrator, you will: • Support on-premises Linux (80%) and Windows (20%) infrastructure and applications. • Support on-premises vSphere infrastructure across multiple datacenters. • Provide Tier III support for production and development environments, managing ticket submission and tracking. • Monitor resource availability to meet customer requirements, ensuring sufficient hardware, software, and throughput. • Review and optimize system performance to ensure peak efficiency and reliability for mission-critical applications • Analyze system resource usage and apply corrective actions when necessary • Review system and application logs, ensuring completion of scheduled tasks and backups • Create and manage user accounts, groups, and permissions; maintain local repositories in a RHEL-based environment • Support on-prem and remote Linux-based Oracle database appliances • Develop and maintain administrative bash scripts for system maintenance and automation • Proficient in DNS administration • Document and implement system administration solutions to meet business requirements Qualifications • Active TOP SECRET clearance with SCI eligibility required; Program Access Request (PAR) submission required after hire • Bachelor’s degree in a STEM discipline (or additional years of relevant experience considered in lieu of degree) • 8-10 years of IT Systems Administration that includes 3-5 years of Linux CLI administration • DoD 8140 IAT Level II cert (e.g., Security+ CE or equivalent) • Experience designing and maintaining secure, scalable cloud/on-prem platforms (IL5–IL6+) • Knowledge of STIGs, RMF, and DoW cybersecurity standards • Knowledge of containerization (Docker/Podman), Ansible for automation, and OpenLDAP • Experience with virtualization (VMware) • Strong CLI and Bash scripting experience NOTE: U.S. Citizenship Required for the purposes of obtaining/holding a U.S. security clearance Pay Transparency Statement AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $150,000.00/Yr. - USD $175,000/Yr. Actual compensation will be determined based on several factors permitted by law. AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance. EEO Statement EEO Race/Sex/Disability Status/Veteran Status