HPC Linux System Administrator

Requisition Description Are you excited about supporting NASA human spaceflight? If so, this could be the position for you. We have the need for an experienced HPC System Administrator at Johnson Space Center (JSC). This position, working on the Amentum JETS contract, will support the Flight Sciences Laboratory (FSL). The FSL is one of JSC's primary compute labs and hosts a wide variety of analyses, which support all human-spaceflight programs at NASA including the International Space Station (ISS), Orion, Space Launch System (SLS), Commercial Crew Program, Human Landing System (HLS), Moon Base and many others. The FSL systems are currently comprised of over 700 machines, 26,000 cores and over 10 PB of storage, which serve more than 1000 users. In this position you will be working with a team of HPC System Administrators to build and maintain all FSL services. This will include High Performance Compute (HPC) administration, high‑end Linux workstation administration, high‑speed networking, high‑speed parallel filesystem administration, and more. Some of the skillset we are looking for this position is a deep understanding of container technologies and how best they can be used in a High Performance Compute (HPC) environment. The FSL System Administration Team is critical in supporting the FSL users in effectively utilizing the systems. The team's day to day tasks include investigating system problems, proactively monitoring system health, and working with FSL users to make sure they can support the NASA human spaceflight mission. Requisition Qualifications This position has been posted at multiple levels. Depending on the candidate's experience, requirements, and business needs, we reserve the right to consider candidates at any level for which this position has been advertised. Typically requires a bachelor’s degree or equivalent certification in a related area and a minimum of 5 years of experience in the field or in a related area. Experience in the following areas is needed for this position: Linux system administration System configuration management Container Based HPC Workflows Complex CI/CD Workflows HPC job scheduler administration Demonstrated problem solving, planning, and communication skills Ability to work in a team environment Experience with large‑scale system administration, with 2 of those years in HPC administration. Proof of U.S. Citizenship or US Permanent Residency may be a requirement for this position. Must be able to complete a U.S. government background investigation. Management has the prerogative to select at any level for which the position is advertised. Requisition Preferences Familiarity with the following is preferred but not required for the position: RedHat-based systems Container Technology like Docker, Podman, and Apptainer Luster High-speed Parallel Filesystems InfiniBand Ansible / Foreman SLURM resource manager SPACK software manager Log consolidation and monitoring Git/Gitlab and software development (CI/CD) Johnson Space Center campus network NASA security mechanisms (security plans, POAMs, ATOs, Risk Assessments Why Join Our Team? In addition to exciting career opportunities, we also have: Excellent personal and professional career growth 9/80 work schedule (every other Friday off), when applicable Onsite cafeteria (breakfast & lunch) Much, much more! Essential Functions Work may involve sitting or standing for extended periods (90% of time). May require lifting and carrying up to 25 lbs. (5% of time). Work environment: generally an office environment, but can involve inside or outside work depending on task. Attendance: Regular attendance in accordance with the established work schedule is critical. Ability to work outside the normal schedule and adjust to meet peak periods and surge requirements. Other essential functions: Professional behavior that enhances productivity and promotes teamwork and cooperation. Grooming and dress must be appropriate for the position and must not impose a safety risk/hazard to the employee or others. Compensation Details IT2-IT4 The compensation range or hourly rate listed for this position is provided as a good‑faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws. Benefits Overview Our health and welfare benefits are designed to support you and your priorities. Offerings include: Health, dental, and vision insurance Paid time off and holidays Retirement benefits (including 401(k) matching) Educational reimbursement Parental leave Employee stock purchase plan Tax‑saving options Disability and life insurance Pet insurance Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara‑O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits. Original Posting 07/08/2026 - Until Filled Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs. Equal Opportunity Employer Statement Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low‑income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters Labor Laws Posters. #J-18808-Ljbffr