Senior System Administrator

Senior System Administrator – Tucson, AZ (Onsite)

U.S. citizenship is required. This is a U.S.

-based role demanding an active and transferable Secret security clearance prior to start date.

• Provide IT systems administration in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux environment.
• Apply knowledge of Windows Server internals or Linux fundamentals including DNS, DHCP, AD, and server replication methods.
• Collaborate as a team member in a fast‑paced technological environment.
• Use troubleshooting techniques to resolve technical problems of moderate to high scope and complexity, integrating hardware and operating systems.
• Implement data RAID, backup and recovery technologies.
• Install and configure software applications requested by end users.
• Work with cybersecurity professionals to maintain security requirements, provide documentation, and deliver training on advanced IT processes and procedures.

• Minimum of two years of prior relevant experience and a university degree or equivalent experience.
• Active and transferable U.S. government issued Secret security clearance required prior to start date, with the ability to obtain program access after start.
• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Experience with Windows and technologies such as Active Directory, WSUS, VMware, Veeam, AWS, MySQL, Remote Desktop Gateway, and Netwrix.
• Experience with backup and recovery enterprise suites.

• Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification and an Operating System Certification).
• Experience with NISPOM, JAFAN, JSIG, DFARS and/or DoD/RMF.
• Experience in Windows Server environments.
• Experience with Zero Clients and data storage solutions including NAS and SAN.
• Experience with IT project lifecycle management processes.
• Experience using VMWare vCenter, vSphere, and ESX and/or other virtual computing methods.
• Experience supporting engineers in software, simulations, and hardware development.
• Experience with Microsoft WSUS, SCCM, and/or Exchange.
• High Performance Computing (HPC) experience in a Linux environment.
• Scripting experience.
• Relocation eligibility.

• Salary range 68,900 USD – 131,100 USD.
• Medical, dental, vision, life insurance, short‑term disability, 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, 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.