High Performance Computing System Administrator, Analyst, Onsite Tucson AZ

Prattwhitney; Tucson (AZ); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Life insurance

401(k) match

Flexible work schedules

Paid time off

Holidays

Job summary

RTX’s Digital Technology division in Tucson seeks a System Administrator for High-Performance Computing (HPC). You will integrate HPC hardware, software, and OS, perform OS tuning, and assist the engineering community with troubleshooting and process standardization.

You will collaborate with Cybersecurity and DT teams, mentor juniors, and work onsite in a fast-paced environment. A DoD security clearance is required within 6 months of hire.

Qualifications

• Typically requires a bachelor’s degree and less than 2 years of relevant experience or a total of 4 years relevant technical experience in IT or Digital Technology.
• Must be able to obtain and maintain a US government issued security clearance.

Responsibilities

• Work as a team member in a fast-paced technological environment.
• Develop and implement new technologies based on industry best practices.
• Perform OS tuning to maximize HPC system performance.

Skills

Windows Server

Linux Server

Security Clearance

US Citizenship

Education

Bachelor’s degree

Tools

SLURM

Grid Engine

Ganglia

Job description

Date Posted: 2026-11-03 Country: United States of America Location: US-AZ-TUCSON-M05 ~ 1151 E Hermans Rd ~ BLDG M05 (External Site) Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: DoD Clearance: Secret Security Clearance Status: Active and existing security clearance required after day 1 System Administrator, High Performance Computing (HPC) Analyst Level - P1 Raytheon Digital Technology (DT) - Classified Transformation Tucson AZ - Onsite Role At RTX, the world largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedom and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

What You Will Do:

Work as a team member in a fast-paced technological environment. Help develop and implement new technologies based upon industry best practices. Use troubleshooting techniques to resolve technical problems at a high scope and complexity to include the integration of High-Performance Computing hardware, software, and operating systems (OS). Understanding software tools, automated scripts, batch schedulers, hardware, and system-level troubleshooting, to lead and support the engineering community. Perform OS tuning to maximize system performance on high performance computing 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. Be a mentor to junior team members. Must be able to obtain required Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification and an Operating System Certification) within 6 months of hire date.

Qualifications You Must Have:

Typically requires a bachelor’s degree and less than 2 years of relevant experience or a total of 4 years relevant technical experience in IT or Digital Technology. Experience in Windows and/or Linux Server Environments including directory services management, and system hardening. The ability to obtain and maintain a US Government issues secret security clearance is required. US Citizenship is required, as only US Citizens are eligible to obtain US Security Clearances.

Qualifications We Prefer:

High Performance Computing (HPC) experience in a Linux environment. Experience in project leadership, management, or project management in a DT domain and basic to advance scripting experience. Experience maintaining a medium sized Microsoft Windows Server environment. Experience with Red Hat Enterprise Linux. Experience with High Performance Computing scheduling and monitoring tools. An active DoD Secret or 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 complex environment(s). Working knowledge of High-Performance Computing scheduling and monitoring tools such as SLURM, Grid Engine and Ganglia.

What We Offer

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation. Relocation Eligibility – This role is relocation eligible on a very limited basis (partial support) for those outside the Tucson, AZ area.

Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as: Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. For onsite and hybrid roles, commuting to and from the assigned site is the employee’s personal responsibility As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

• medical
• dental
• vision
• life insurance
• short-term disability
• long-term disability
• 401(k) match
• flexible spending accounts
• flexible work schedules
• employee assistance program
• Employee Scholar Program
• parental leave
• paid time off
• holidays

Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.

This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

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.

Privacy Policy and Terms: Click on this link to read the Policy and Terms RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses - Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.