Linux Systems Administrator, Senior - Top Secret Clearance Requi with Security Clearance

AMERICAN SYSTEMS, an employee-owned company, is seeking a skilled Senior Linux Systems Administrator with 5 years of experience and an active Top-Secret clearance to join our mission-critical team supporting our government customer at NWSC Crane, IN. At AMERICAN SYSTEMS, you'll play a key role in delivering innovative solutions that empower the American Warfighter. Your expertise will help tackle the nation's most complex technical challenges and give our forces a decisive edge against our nation's adversaries. Responsibilities As a Senior Linux Systems administrator with AMERICAN SYSTEMS, you will have the opportunity to: * Support on-premises Production and Development Linux infrastructure and applications. * Provide Tier II 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. * Perform interface administration, including sFTP, SFG, and shell scripting. * Develop and maintain administrative scripts (e.g., BASH, Python) for system maintenance. * Document and implement system administration solutions to meet business requirements. * Provide project status updates, problem resolution, and system administration reports to management. * Coordinate problem resolution with customers, team members, and vendors as needed. * Assess and recommend improvements for system software and hardware to enhance efficiency and functionality. * Collaborate with the Cybersecurity team to implement, monitor, and maintain cybersecurity compliance and vulnerability mitigations. * Be entrusted with mentoring and/or training less experienced staff as part of team development efforts. hotjobs Qualifications * Active Top Secret clearance required * Bachelor's degree in a STEM discipline or 4 additional years of relevant experience in lieu of a degree. * 5-7 years of relevant IT / Linux Systems Administration experience, including knowledge of containerization (Podman/Docker), Ansible, and OpenLDAP. * Current DoD 8140 IAT level II certification (e.g., Security CE) * Scripting skills in BASH and Python. * Experience with VMware vSphere (version 7 or above). * Familiarity with PostgreSQL databases. * Must obtain a Red Hat Linux or comparable Linux Server OS certification (e.g., RHCSA or RHCE) within six months of hire. * Candidates who currently possess active Red Hat certifications may be considered favorably during the selection process. AMS1 Pay Transparency Statement AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $80,100.00/Yr. - USD $133,700.00/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

Location: Crane, Indiana, US

Posted Date: 11/11/2025