Senior Systems Administrator — Secure, Mission-Critical Infra
Leidos Inc
Leidos Inc is looking for a Senior Systems Administrator to join their team in Tucson, AZ. You will manage and optimize high-performance systems that support intelligence efforts, ensuring their availability and security. The role requires a deep technical expertise with a Bachelor’s degree in Computer Science or related field and extensive experience in system administration, including Linux and Windows environments. This position is critical to maintain and enhance system operations in a fast-paced, classified environment. #J-18808-Ljbffr Leidos Inc
- 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...Senior
- 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
$92.3k - $166.85k
...technology-enabled services and mission software capabilities in... ...of cyber, logistics, security operations, and decision analytics... ...to protect people and critical assets. The Chinook... ...Program is currently seeking a Senior Systems Administrator. As a senior member of our...SeniorContract workLocal areaImmediate start- Raytheon is looking for a Senior System Administrator in Tucson, AZ to provide IT systems administration in a diverse environment. This role requires... ...Windows and Linux operating systems, alongside an active security clearance. Key responsibilities include troubleshooting,...Senior
$68.9k - $131.1k
...transferable U.S. government issued security clearance is required prior... ...meet the needs of today’s mission and stay ahead of tomorrow’... ...of aerospace and defense. Senior System Administrator, Tucson, AZ Must have an... ...team to support exciting, critical programs with classified...SeniorTemporary workWork experience placementWork at officeRemote workRelocationRelocation packageFlexible hoursShift workAfternoon shift- SwiftCruit is seeking a Principal System Administrator based in Tucson, AZ to support critical classified programs. The role involves providing IT systems administration... .... The position requires an active U.S. government security clearance. It offers competitive salary and...Senior
$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- 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.... ...capabilities. Develop, implement, and maintain secure, cost-efficient environments across various...SeniorFull timeRelocation packageFlexible hoursShift work
$68.9k - $131.1k
Senior System Administrator - Tucson, AZ Date Posted: 2026-05-11 Country: United States of America... ...transferable U.S. government issued security clearance is required prior to start... ...environment where quality execution is critical. Full‑time 100% onsite position. Qualifications...SeniorFull timeTemporary workRelocation packageFlexible hoursShift work- Prattwhitney in Tucson, Arizona, is seeking a skilled systems administrator. In this role, you will provide system administration support, resolve... ..., with relevant experience in IT support and a necessary security clearance. The role offers a competitive salary and...Senior
$57.2k - $108.8k
SwiftCruit is hiring a System Administrator in Tucson, Arizona to support critical programs with classified information systems. You'll work in a Microsoft Windows... .... The ideal candidate will have an active Secret security clearance and a University degree with less than 2...Relocation package$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... ...users. Work with cybersecurity professionals to maintain security requirements and obtain DoDD 8140/8570 certification (...SeniorTemporary workRelocation packageFlexible hours$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 security clearance prior to start date. Responsibilities Provide IT systems administration in a heterogeneous Microsoft...SeniorTemporary workRemote workRelocationFlexible hours$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$68.9k - $131.1k
...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 Linux environment. Work...SeniorFull timeTemporary workFlexible hours$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... .... Partner with Cybersecurity teams to maintain system security requirements, follow established processes, and assist with...SeniorTemporary workCasual workFlexible hours- Prattwhitney in Tucson, Arizona, is seeking a Principal System Administrator to provide IT systems administration in Microsoft Windows and RedHat... ...include troubleshooting IT issues, maintaining security compliance, and collaborating with team members in a fast-paced...Senior
- Raytheon is hiring a Systems Administrator in Tucson, AZ, to support IT systems across a heterogeneous environment. Responsibilities include... ...systems, troubleshooting technical issues, and ensuring system security compliance. The ideal candidate requires a minimum of 2...Senior
- Raytheon in Tucson, Arizona, is looking for an IT Systems Administrator. This role involves administering IT systems in a diverse Microsoft... ...university degree, and an active US government issued Secret security clearance. The position comes with a competitive salary and...Senior
$86.8k - $165.2k
....S. government issued security clearance is required... ...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...Full timeTemporary workWork experience placementRelocationFlexible hours- Prattwhitney is seeking a Principal System Administrator to provide IT systems administration in a heterogeneous environment, including Microsoft... ...strong Windows/Linux skills, and hold a U.S. government security clearance. Benefits include medical and 401(k) match. #J-18...SeniorCasual work
- Prattwhitney is seeking a Senior System Administrator in Tucson, AZ, focusing on providing IT systems administration in a heterogeneous Microsoft... ...must hold a bachelor’s degree, possess active secret security clearance, and have experience with Linux or Windows OS. Benefits...Senior
- Prattwhitney is looking for a Senior System Administrator in Tucson, AZ, to provide IT systems administration across Windows and Linux environments... ..., a university-level education, and hold an active Secret security clearance. Benefits include a competitive salary range of...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
$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 (active and transferable U.S. government issued clearance required before start). Job Overview Senior System Administrator...SeniorTemporary workRelocation packageFlexible hoursShift workNight shift- ...ambitious and vital space missions globally, supporting... ...change, national security, and exciting new technology... ...deployment. Our Space Systems business designs and... ...space missions. SENIOR AI&T ENGINEER II/PRINCIPAL... ...solves mission-critical space domain and Intelligence...SeniorPermanent employmentLocal area
$68.9k - $131.1k
Senior System Administrator, Tucson, AZ. Active secret clearance required. Relocation offered. Senior System Administrator, internally known as... ...Success requires developing, implementing, and maintaining secure, cost‑efficient environments across classified programs....SeniorCasual workWork at officeRelocationRelocation packageMonday to FridayFlexible hoursShift workNight shift$57.2k - $108.8k
....S. government issued security clearance is required... ...the needs of today's mission and stay ahead of tomorrow... ...the integrity of our systems and support IT... ...around the world. System Administrator will collaborate and support exciting, critical programs with classified...Temporary workWork experience placementWork at officeRemote workRelocation packageFlexible hours- Prattwhitney is seeking a Senior Principal Systems Security Engineer in Tucson, AZ to implement security solutions for embedded weapons systems. This role requires a Bachelor’s degree in STEM and at least 10 years of relevant experience, including leadership in security...SeniorRelocation package
- ...Join a team working at the forefront of secrets management, encryption, and identity security, powering mission‑critical systems for thousands of organizations worldwide. As a Senior Software Engineer, you’ll play a key role in advancing the cryptographic and security...SeniorWorldwide
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