Senior System Administrator; 3rd shift

Senior System Administrator – Tucson, AZ

Location:

Tucson, AZ – 1151 E Hermans Rd – BLDG 848.

U.S. citizenship is required and an active Secret clearance is mandatory.

Onsite position. 3rd shift:
Monday–Friday, 11:00 PM – 8:00 AM (12% shift differential). 100% on‑site support and occasional overtime.

• Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux environment.
• Maintain Windows Server and Linux fundamentals, including DNS, DHCP, AD, and server replication.
• Use troubleshooting techniques to resolve technical problems of moderate to high scope, including hardware & OS integration.
• Understand data RAID, backup technologies, and implement them.
• Install and configure software applications requested by end users.
• Collaborate with cybersecurity professionals to keep security requirements met.
• Document and train on advanced IT processes and procedures.
• Support systems operating 24x7; occasionally work beyond standard hours.
• Travel up to 10% per year to other domestic locations as needed.

• University Degree or equivalent experience plus at least 2 years of relevant experience.
• Experience with Linux or Windows.
• Experience with Active Directory, VMware, backup and recovery.

• DoDD 8140 / 8570 Certification, e.g., CompTIA Security+ CE or equivalent OS certification.
• Experience with NISPOM, JAFAN, JSIG, DFARS, DoD/RMF.
• Experience with NAS, SAN technologies and solutions.
• Experience with IT project lifecycle management.
• Experience with VMWare vCenter, vSphere, ESX or other virtual computing methods.
• Experience supporting engineers in software, simulations, and hardware development.
• Experience with Microsoft WSUS, MECM, and/or Exchange.
• High Performance Computing (HPC) experience in a Linux environment.
• Scripting experience.

• Salary range: $68,900 – $131,100 USD (based on experience).
• Relocation assistance available (subject to eligibility).
• Benefits: medical, dental, vision, life insurance, short‑term & long‑term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, parental leave, paid time off, holidays.
• Annual incentive compensation programs (subject to eligibility and performance).

RTX is an Equal Opportunity Employer and provides affirmative action in employment for qualified individuals with a disability and protected veterans in compliance with applicable law.

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