Sr. Linux Systems Administrator with Security Clearance

Position Overview: The Senior Linux System Administrator is responsible for leading system administration activities. This position oversees the installation, configuration, maintenance, and integrity of computing systems and software. The role involves planning, ensuring long-term system requirements align with organizational objectives, and implementing system enhancements to improve performance and reliability. Key Responsibilities: Lead system administration activities across ARLEN and CARLEN networks. Assign and manage staff workloads, provide direction, and evaluate performance. Coordinate with local ARL IT leadership to align support efforts with new project needs and risk management requirements. Ensure systems meet ARL performance, security, and reliability standards. Install, configure, and maintain software and operating systems. Implement operating system enhancements for improved performance and reliability. Respond to and resolve complex system administration issues. Conduct quality control and performance management efforts for optimal system uptime. Required Qualifications: • Experience: Minimum of 10 years in systems administration roles • Education: Master’s degree or Bachelor’s degree with an additional 2 years of relevant experience • Certifications (Required): CompTIA Security CE or CompTIA Server CE Red Hat Certified System Administrator (RHCSA) MCSA, MAC OS, or MCP Must meet DoD 8750 and 8140 compliance requirements Technical Environment: Windows Server MCEM MAC OS RHEL, RedHat Enterprise Virtualization Hypervisor KVM Puppet Patch Management PowerShell WSUS STIG Compliance Storage Solutions, Backup and Restore Operations Black Bear Technology Solutions (B2TS), is an Equal Opportunity Employer and Prohibits Discrimination and Harassment of Any Kind. B2TS is committed to the principle of equal employment opportunity for all employees and to providing employees with a work environment free of discrimination and harassment. All employment decisions at B2TS are based on business needs, job requirements and individual qualifications, without regard to race, color, religion or belief, national, social or ethnic origin, sex (including pregnancy), age, physical, mental or sensory disability, HIV Status, sexual orientation, gender identity and/or expression, marital, civil union or domestic partnership status, past or present military service, family medical history or genetic information, family or parental status, or any other status protected by the laws or regulations in the locations where we operate. KBT will not tolerate discrimination or harassment based on any of these characteristics.

Location: Adelphi, Maryland, US

Posted Date: 9/9/2025