Senior Linux System Administrator

Senior Linux System Administrator

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