Senior Linux Systems Administrator

Job Summary Leidos is seeking a highly experienced Linux-focused technical professional to support systems across cloud and on‑prem environments. This role requires deep expertise in Linux administration, infrastructure, security compliance, and troubleshooting within containerized and virtualized environments. Primary Responsibilities Administer and maintain Linux-based systems across cloud and containerized environments Manage and support storage solutions and virtualization technologies Configure and troubleshoot IP networking and firewall components Apply and support PKI/TLS/cryptographic solutions, including adherence to crypto policies Perform application support and advanced system troubleshooting within Linux environments Support SSP compliance activities and STE/STN requirements on Linux systems Contribute to system automation efforts using available tools (as applicable) Basic Qualifications Bachelor's degree in a relevant field with 10+ years of experience, OR no degree with 15+ years of related professional experience IAT Level II certification (e.g., Security+ CE, SSCP) Strong proficiency in Linux system administration (required) Experience with IP networking and firewall technologies Solid understanding of PKI/TLS/cryptography and associated policies Clearance Required: Must have an active TS/SCI with Polygraph Benefits Competitive compensation with a pay range of $92,300.00 – $166,850.00 and a 10k Sign on Bonus eligible. Additional benefits include Paid Time Off, 11 paid holidays, 401K with a 6% company match (immediate vesting), flexible schedules, discounted stock purchase plans, technical upskilling, education and training support, parental paid leave, and more. Equal Employment Opportunity All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws. #J-18808-Ljbffr