Senior Systems Administrator: Mission-Critical DoD Infra
Leidos
Leidos is seeking a Senior Systems Administrator to manage, support, secure, and optimize mission-critical systems, particularly in Tucson, Arizona. This role involves leadership in IT operations, mentoring junior staff, and ensuring system reliability for geospatial intelligence initiatives. Candidates should possess technical expertise, IT certifications, and experience in Linux and Windows systems management, preferably in classified environments. #J-18808-Ljbffr Leidos
- Leidos Inc is looking for a Senior Systems Administrator to join their team in Tucson, AZ. You will manage and optimize high-performance systems... ...including Linux and Windows environments. This position is critical to maintain and enhance system operations in a fast-paced,...Senior
$92.3k - $166.85k
...technology-enabled services and mission software capabilities in... ...to protect people and critical assets. The Chinook Program is currently seeking a Senior Systems Administrator. As a senior member of our... ...patching in compliance with DoD STIGs and agency policies....SeniorContract workLocal areaImmediate start$68.9k - $131.1k
Raytheon is seeking a Senior System Administrator in Tucson, AZ, to provide IT systems administration for critical classified programs. This role requires an active secret clearance... ...$68,900 and $131,100. Join Raytheon's mission of creating a safer world through advanced...SeniorRelocation package- SwiftCruit is seeking a Principal System Administrator based in Tucson, AZ to support critical classified programs. The role involves providing IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux environment. Candidates must have...Senior
$68.9k - $131.1k
...meet the needs of today’s mission and stay ahead of tomorrow’... ...of aerospace and defense. Senior System Administrator, Tucson, AZ Must have an active... ...team to support exciting, critical programs with classified... ...JAFAN, JSIG, DFARS and/or DoD/RMF. Experience with data...SeniorTemporary workWork experience placementWork at officeRemote workRelocationRelocation packageFlexible hoursShift workAfternoon shift$68.9k - $131.1k
...Job Summary Position: IT Systems Administrator (Onsite) – Tucson, AZ. Post Date: 2026-06-25. Requires U.S. citizenship and an active, transferable DoD Secret clearance. 100% onsite, with up to 10% domestic travel. Responsibilities Provide IT systems administration in a...SeniorTemporary workRelocation packageFlexible hours- Raytheon is hiring a Systems Administrator in Tucson, AZ, to support IT systems across a heterogeneous environment. Responsibilities include providing administration for Windows and Linux systems, troubleshooting technical issues, and ensuring system security compliance...Senior
- Prattwhitney in Tucson, Arizona, is seeking a Principal System Administrator to provide IT systems administration in Microsoft Windows and RedHat Enterprise Linux environments. Candidates must possess strong experience in server administration across these operating systems...Senior
- Raytheon in Tucson, Arizona, is looking for an IT Systems Administrator. This role involves administering IT systems in a diverse Microsoft Windows and Red Hat Linux environment, resolving technical issues, and collaborating in a fast-paced setting. Applicants must have...Senior
- Prattwhitney is seeking a Senior System Administrator in Tucson, AZ, focusing on providing IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux environment. The role demands collaboration with multiple teams to solve complex IT infrastructure...Senior
- Overview Senior System Administrator, Tucson, AZ. Must have an active secret clearance. Full-time, 100%... ...engineering expertise support today’s missions and tomorrow’s threats. Responsibilities... ...required on day 1. Preferred: DoD directive (DoDD 8140/8570) certification...SeniorFull timeRelocation packageFlexible hoursShift work
$68.9k - $131.1k
Senior System Administrator - Tucson, AZ Date Posted: 2026-05-11 Country: United States of America Location... ...where quality execution is critical. Full‑time 100% onsite position. Qualifications... ...recovery. Qualifications We Prefer DoD Directive 8140/8570 certification (...SeniorFull timeTemporary workRelocation packageFlexible hoursShift work- Trinnex is seeking a Senior Cyber Security Analyst to secure software systems essential for water utilities. In this role, you will combine cybersecurity with DevSecOps, focusing on embedding security controls and identifying vulnerabilities across the software development...Senior
$68.9k - $131.1k
...Senior System Administrator – Tucson, AZ (Onsite) U.S. citizenship is required. This is a U.S.-based role demanding an active and transferable Secret... ...). Experience with NISPOM, JAFAN, JSIG, DFARS and/or DoD/RMF. Experience in Windows Server environments. Experience...SeniorTemporary workRemote workRelocationFlexible hours$132.4k - $251.6k
...Security Clearance Type: DoD Clearance: Secret... ...meet the needs of today's mission and stay ahead of... ...tactical missile programs. Critical to this role is designing... ...Advanced Design System (ADS) or equivalent... ...responsibilities for less-senior engineers Working across...SeniorTemporary workApprenticeshipWork experience placementInterim roleWork at officeRemote workRelocationFlexible hours- Raytheon is looking for a Senior System Administrator in Tucson, AZ to provide IT systems administration in a diverse environment. This role requires experience with Windows and Linux operating systems, alongside an active security clearance. Key responsibilities include...Senior
$57.2k - $108.8k
RTX in Tucson is seeking an IT Systems Administrator to manage Microsoft Windows environments and ensure systems security. You will work in a fast-paced environment, tackle technical problems, and manage virtualized systems. A university degree and U.S. citizenship with...SeniorFlexible hours- Prattwhitney in Tucson, AZ is seeking a Senior System Administrator to support IT systems in a dynamic manufacturing environment. This full-time, 100% onsite position requires an active secret clearance and offers responsibilities in both Windows and Linux environments....SeniorFull time
$86.8k - $165.2k
...the needs of today’s mission and stay ahead of tomorrow... ...the integrity of our systems and support IT... ...world. Principal System Administrators based Tucson, AZ, internally... ...to support exciting, critical programs with... ...We Prefer An active DoD TS Department of Defense...Full timeTemporary workWork experience placementRelocationFlexible hours- Prattwhitney is seeking a Principal System Administrator to provide IT systems administration in a heterogeneous environment, including Microsoft Windows and Red Hat Linux. You will support systems operational 24/7, requiring occasional out-of-hours work. Preferred candidates...SeniorCasual work
$68.9k - $131.1k
Raytheon is seeking a Senior System Administrator in Tucson, AZ, requiring active Secret clearance. This role involves managing classified information systems, collaborating with program teams, and providing IT systems administration in a mixed Windows and Linux environment...SeniorRelocation packageNight shift- Prattwhitney is looking for a Senior System Administrator in Tucson, AZ, to provide IT systems administration across Windows and Linux environments. Candidates must have a minimum of 2 years' experience, a university-level education, and hold an active Secret security clearance...SeniorRelocation packageShift workAfternoon shift
- Prattwhitney is seeking a Senior System Administrator to provide IT systems administration in Tucson, AZ. The role demands U.S. citizenship and an active Secret security clearance. Candidates will engage in troubleshooting, implement RAID, and collaborate in fast-paced...SeniorFlexible hours
- Prattwhitney is seeking a Senior System Administrator in Tucson, AZ, to support classified programs in a diverse IT environment. The position requires on-site 3rd shift work with a 12% shift differential. Ideal candidates will have at least 2 years of experience or an equivalent...SeniorRelocation packageShift workNight shift
- System Administrator DPR Construction is seeking a System Administrator to join our collaborative team environment to assist with solving business challenges with technology and operations support for our growing business. Responsibilities Track all service requests...SeniorWork at office
- ...ambitious and vital space missions globally, supporting... ...deployment. Our Space Systems business designs and builds... ...space missions. SENIOR AI&T ENGINEER II/PRINCIPAL... ...solves mission-critical space domain and Intelligence... ...Department of Defense (DoD) and Intelligence Community...SeniorPermanent employmentLocal area
$68.9k - $131.1k
...active U.S. Secret clearance and U.S. citizenship. Must obtain DoD Directive 8140 / 8570 certification (CompTIA Security+ CE or equivalent) within 6 months. What You Will Do Provide IT systems administration in a heterogeneous Microsoft Windows and Red Hat Enterprise...SeniorFull timeTemporary workFlexible hours$68.9k - $131.1k
Senior System Administrator - Tucson, AZ Date Posted: 2026-05-11 Location: 848 ~ 1151 E Hermans Rd, BLDG 848, Tucson, AZ Security Clearance: Secret... ...). Knowledge of NISPOM, JAFAN, JSIG, DFARS, and DoD/RMF compliance. Experience with NAS/SAN storage technologies...SeniorTemporary workRelocation packageFlexible hoursShift workNight shift$68.9k - $131.1k
Senior System Administrator, Tucson, AZ. Active secret clearance required. Relocation offered. Senior System Administrator, internally known as Senior... .... Familiarity with NISPOM, JAFAN, JSIG, DFARS, or DoD/RMF. Experience with NFS, NAS, and SAN technologies. Project...SeniorCasual workWork at officeRelocationRelocation packageMonday to FridayFlexible hoursShift workNight shift$68.9k - $131.1k
We are hiring for a Systems Administrator to join our Digital Technology (DT) team in Tucson, AZ, ensuring Raytheon teammates across the globe can... ...enterprise backup/recovery tools. Qualifications We Value DoD 8140 / 8570 certification requirements (CompTIA Security+ CE...SeniorTemporary workCasual workFlexible hours
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