High Performance Computing System Administrator, Senior Analyst, Onsite Tucson AZ

Date Posted: 2026-05-20 | Country: United States of America | Location: Tucson, AZ | Position: System Administrator, High Performance Computing (HPC) – P2 Senior Analyst Role Type: Onsite | Citizenship: U.S. Citizen required | Clearance: Secret (Active and transferable U.S. government issued security clearance required prior to start date) Job Summary This Senior Analyst (P2) in High‑Performance Computing will provide HPC administration in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux environment. Responsibilities include troubleshooting, system tuning, supporting engineering communities, and maintaining security compliance. What You Will Do Work as a team member in a fast‑paced technological environment. Help develop and implement new technologies based on industry best practices. Use troubleshooting techniques to resolve technical problems at a moderate scope and complexity, including integration of HPC hardware, software, and operating systems. Utilize software tools, automated scripts, and batch schedulers to lead and support the engineering community. Perform OS tuning to maximize system performance on HPC systems. Work across DT functions to standardize processes and procedures. Work with Cybersecurity professionals to maintain security compliance requirements. Provide documentation and training on advanced DT HPC processes and procedures. Mentor junior team members. Obtain required Department of Defense Directive 8140 / 8570 Certifications (CompTIA Security+ CE or equivalent and an Operating System Certification) within six months of hire date. Relocation support provided to the selected applicant if eligible under company policy. Qualifications U.S. citizenship required; only U.S. citizens are eligible for a security clearance. Active and transferable U.S. government issued security clearance (Secret) required prior to start date. University degree or equivalent experience and minimum two years of prior relevant experience, or an advanced degree in a related field. Experience in Windows and/or Linux Server Environments, including directory services management and system hardening. Experience maintaining a medium‑sized Microsoft Windows Server environment. Must obtain DOD Directive 8140 / 8570 certifications within six months of hire date. Preferred Qualifications Experience with HPC scheduling and monitoring tools (SLURM, Grid Engine, Ganglia) highly desired. Experience with RedHat Enterprise Linux. HPC experience in a Linux environment. Project leadership, management, or project management experience in a DT domain. Basic to advanced scripting experience. Active DoD Top‑Secret Clearance. Advanced hands‑on experience with Windows and Unix security hardening, systems integrations, advanced troubleshooting, and authentication service integration (LDAP). Unix (including Linux and Solaris) experience in a medium to high complexity environment. What We Offer Relocation eligible under company policy. Salary range: $68,900 – $131,100 (USD). Benefits including medical, dental, vision, life insurance, short‑term and long‑term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, parental leave, paid time off, and holidays. RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act. #J-18808-Ljbffr