Linux System Administrator, Senior
- San Antonio, TX
- Permanent
- Full-time
Location: San Antonio, TX
Clearance Required: TS/SCI with PolygraphYour Mission:Peraton is seeking a Senior Linux System Administrator to support our high-impact Cyber Intelligence team in San Antonio, TX. Join us at the forefront of national security as you help operate and secure critical cloud-based repositories in a fast-paced, mission-driven environment where your skills directly support global operations.This role is ideal for someone who thrives in dynamic environments, enjoys solving complex technical problems, and is passionate about contributing to real-world cybersecurity missions.What You’ll Do:You’ll work hands-on with large-scale Hadoop and Accumulo clusters, helping maintain the stability, performance, and security of our cloud systems. Your responsibilities will include:Monitoring and maintaining system health across distributed environmentsTroubleshooting hardware, software, and network issuesSustaining and optimizing storage systemsCollaborating with hardware, software, security, and infrastructure teamsAutomating tasks and managing configurations using tools like Puppet, Bash, and PythonProviding after-hours support as needed for mission-critical issuesEnsuring compliance with system security requirementsParticipating in system design and architecture discussionsMaintaining system scripts, patching software, and managing user accountsKeeping accurate hardware and system inventoriesWho You Are:You’re a proactive, skilled Linux system administrator with a strong background in:Operational troubleshooting of cloud-based systems and large-scale distributed clustersTools such as Hadoop, Accumulo, and experience managing cloud infrastructureScripting and automation using Bash, Python, or other scripting languagesConfiguration management with Puppet (or similar tools)You understand that requirements can shift quickly and are ready to adapt in real time to global operational needs.Why Peraton?At Peraton, you won’t just maintain systems—you’ll safeguard missions. You’ll work alongside passionate professionals who are dedicated to protecting the nation through advanced technology and innovation. We offer competitive compensation, a comprehensive benefits package, and opportunities to grow your career while making a difference.QualificationsJob Requirements:Experience:20+ years as a Linux System Administrator on projects of similar scope and complexityProven ability to plan and lead system administration effortsEducation:Bachelor’s degree in System Engineering, Computer Science, Information Systems, Engineering, or a related fieldMay substitute 5 additional years of experience in place of degreeSecurity Clearance:Active TS/SCI with current polygraph requiredTechnical Expertise in:Designing and implementing Service-Oriented Architecture (SOA) solutionsDeveloping DoDAF-compliant architectures, including operational, technical standards, and system/service viewsLeading end-to-end system trade analyses to optimize long-term system performanceApplying models, simulations, and prototyping to manage risk and lower development costsManaging system configurations throughout lifecycle (hardware, software, and documentation)Creating design alternatives that factor in cost, complexity, reuse, risk, and scalabilityDeveloping and monitoring risk mitigation plans, including fallback strategies using EVM dataSupporting Analysis of Alternatives (AoA) efforts with well-justified solution recommendationsProviding technical leadership across the full system development lifecycle—from requirements gathering through integration and testingPeraton offers enhanced benefits to employees working on our critical National Security programs, which include heavily subsidized employee benefits coverage for you and your dependents, 25 days of PTO accrued annually up to a generous PTO cap and eligible to participate in an attractive bonus plan.#MPOJobs #AJCM #PeratonRoyalMovePeraton OverviewPeraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world’s leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees do the can’t be done by solving the most daunting challenges facing our customers. Visit to learn how we’re keeping people around the world safe and secure.Target Salary Range$190,000 - $304,000. This represents the typical salary range for this position based on experience and other factors.EEOAn Equal Opportunity Employer including Disability/Veteran.