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

RTX; Tucson (AZ); On-site; USD 69,000 - 131,000; Full time

Benefits offered by this job

Relocation eligibility

Job summary

RTX in Tucson, AZ is seeking a System Administrator for High-Performance Computing (HPC) within Raytheon Digital Technology. The role supports Windows and Red Hat environments, DNS/DHCP/AD, and server replication, in a classified infrastructure context.

The Senior Analyst (P2) will operate onsite, collaborate across teams, mentor junior members, and pursue DoD 8140/8570 certs within six months. U.S. citizenship with clearances is required.

Qualifications

• University degree or equivalent experience in a related field.
• Active and transferable U.S. government security clearance required.
• Experience in Windows and/or Linux server environments with directory services and hardening.

Responsibilities

• Provide HPC administration in Windows and Red Hat Linux environments.
• Maintain security compliance and documentation for DT HPC processes.
• Mentor junior team members and collaborate across DT functions.
• Support OS tuning and performance optimization on HPC systems.
• Assist with service delivery and troubleshooting in a classified environment.

Skills

Windows Server

Linux Server

Directory services

System hardening

Security clearance

Education

University degree or equivalent

Tools

Red Hat Enterprise Linux

DNS

DHCP

Active Directory

Job description

Date Posted: 2026-10-30

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: Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Security Clearance Type: Secret - Current

Security Clearance Status: Active and existing security clearance required on day 1

System Administrator, High-Performance Computing (HPC) – P2

Senior Analyst Level

Raytheon Digital Technology (DT) – Classified Infrastructure Services

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.

Job Summary

This Senior Analyst (P2) High-Performance Computing (HPC) candidate will provide Raytheon Digital Technology with High-Performance Computing Administration in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux environment. This candidate will understand Windows Server internals, and knowledge of Linux fundamentals to include DNS, DHCP, AD, and server replication methods.

This position is an onsite role in our Tucson, Arizona location. Relocation support will be provided to the selected applicant if they meet company policy eligibility requirements.

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 moderate scope and complexity to include the integration of High-Performance Computing hardware, software, and operating systems (OS).
• Understanding utilizing 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 University Degree or equivalent experience and minimum 2 years of prior relevant experience, or An Advanced Degree in a related field
• Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Experience in Windows and/or Linux Server Environments including directory services management, and system hardening.
• Experience maintaining a medium sized Microsoft Windows Server environment.

Qualifications We Prefer

• Experience with High-Performance Computing scheduling and monitoring tools highly desired.
• Experience with Red Hat Enterprise Linux.
• 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.
• An 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 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.
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• Relocation Eligibility – This role is relocation eligible for the selected applicant if they meet company policy criteria.

Additional Information

• Please ensure the role type defined below is appropriate for your needs before applying to this role.
• 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.

Clearance Information: This position requires current and active US DOD Secret security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm

The salary range for this role is 68,900 USD - 131,100 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.

Hired applicants may be eligible for benefits, including but not limited to, 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, and 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.

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