Senior Linux System Administrator

Job Description

• This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Linux System Administrator in United States. This role sits at the core of high-performance computing (HPC) infrastructure, supporting advanced Linux-based systems that power mission-critical research and production environments. You will be responsible for ensuring the stability, performance, and scalability of complex computing platforms used in scientific and defense-related applications. The position involves hands-on system administration, performance tuning, and collaboration with engineering teams to design next-generation HPC architectures. You will also evaluate and integrate emerging technologies, including new hardware platforms and open-source software stacks, to optimize system efficiency. In addition to operational support, you will contribute to instrumentation and monitoring solutions that provide visibility into system and workload performance. This is a highly technical and impactful role within a cutting-edge, security-focused computing environment.
• Accountabilities: Administer and support Linux-based high-performance computing (HPC) systems across research, development, and production environments. Monitor, tune, and optimize system performance using advanced Linux tools and performance analysis techniques. Develop and implement instrumentation and monitoring solutions to evaluate system, subsystem, and workload performance. Evaluate and integrate open-source software tools, frameworks, and HPC stacks tailored to mission requirements. Collaborate with system administration teams across multiple platforms to ensure reliability and consistency of HPC infrastructure. Support architectural design discussions and trade-off analysis for emerging technologies, including CPU/GPU and file system architectures. Maintain and sustain legacy HPC systems while planning and integrating new capabilities into existing environments. Standardize software stacks and operational practices to reduce complexity and improve maintainability. Serve as a technical subject matter expert for HPC system administration and infrastructure optimization. Requirements: Bachelor’s or Master’s degree in Computer Science, Engineering, or related field (or equivalent experience). 8+ years of experience in Linux system administration, preferably in HPC environments. Strong expertise in Linux operating systems, performance tuning, and system instrumentation. Hands-on experience with HPC architectures, system tools, and open-source software stacks. Ability to work collaboratively within distributed system administration and engineering teams. Strong analytical and troubleshooting skills for complex, large-scale computing environments. Familiarity with emerging hardware platforms (e.g., ARM, AMD, NVIDIA architectures) is highly desirable. Experience supporting legacy systems and integrating modern capabilities into existing infrastructure. Relevant certifications such as Linux+ or Security+ (or equivalent) preferred. Active Top Secret security clearance required. Benefits: Competitive salary range ($134,100 – $241,400, based on experience and qualifications) Comprehensive medical, dental, and vision insurance Paid time off, holidays, and flexible work arrangements Employee Stock Ownership Plan (ESOP) 401(k) retirement plan Life insurance and disability coverage Opportunities to work on advanced high-performance computing and mission-critical systems Exposure to cutting-edge technologies in defense, research, and large-scale infrastructure environments Strong focus on professional development and long-term career growth
• How Jobgether works: We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team. We appreciate your interest and wish you the best! Why Apply Through Jobgether? Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time. #LI-CL1
• We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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