Information System Security Engineer

Immediately Hiring Information Systems Engineers!

Embark on a journey with QDSS at the forefront of technological innovation as we seek talented Engineers to shape the future of cutting‑edge projects and contribute to a culture of excellence and creativity. What we do matters.

We’re hiring an Information Systems Engineer to support and secure test equipment (TE) and engineering lab systems for advanced aerospace and defense programs. In this role, you’ll combine systems administration and cybersecurity to ensure test environments are secure, compliant, and fully operational across Linux, Windows, and networked systems.

You’ll work closely with engineering, IT, and cybersecurity teams to support test system integration, troubleshooting, and compliance, making this an ideal role for someone who enjoys hands‑on problem solving in secure, mission‑critical environments.

Location: Tucson, AZ (onsite) Relocation Assistance Available.

Clearance: U.S. Citizenship required;
Secret clearance (active or obtainable) Strong Preference for Active Clearance.

• Administer, maintain, and validate test systems to ensure Windows/Linux servers, OT assets, and integrated environments meet NIST 800-171 compliance requirements
• Develop secure test environments and ensures cybersecurity compliance of test equipment using tools like Nessus, Splunk, Ivanti
• Install, configure, and maintain software, patches, and system updates
• Troubleshoot issues related to connectivity, system performance, and test integrity
• Support integration of test systems into secure/controlled networks
• Collaborate with engineering and cybersecurity teams to ensure secure and compliant system changes
• Maintain system availability, reliability, and operational readiness
• Support flight test and production test environments

• Bachelor’s degree in Information Systems, Computer Science, Engineering, or related STEM field
• 5+ years of experience in administering Windows and Linux servers in secure environments
• Ability to develop and maintain cybersecurity-compliant test environments
• Strong troubleshooting skills for production and development test equipment
• Active Secret security clearance or obtainable (U.S. Citizenship required)

• Familiarity with NIST 800-171 compliance or similar regulatory frameworks
• Experience supporting OT systems, networked test environments, or third‑party integrations
• Ability to validate system configurations and ensure compliance documentation readiness
• Experience with user account management, software installation, and system support
• Experience supporting test systems, lab environments, or operational technology (OT)
• Familiarity with cybersecurity tools (Nessus, Splunk, Ivanti)
• Experience working in classified or secure environments
• Ability to lead troubleshooting efforts across complex, multi‑system environments
• Strong communication skills and ability to support technical users and engineering teams

At QDSS, our advantage is purpose‑driven work, collaborative teams, and complex challenges that push boundaries and build lasting impact. You’ll grow your career while contributing to mission‑critical programs that demand excellence and shape the future.

• Work That Matters – Next‑generation, safety‑ and mission‑critical projects where your contributions have real‑world impact.
• Growth That’s Supported – Competitive compensation, employer‑matched 401(k), certification assistance, and clear opportunities for advancement.
• A Culture That Works – A flexible, collaborative, and people‑first environment where teamwork, innovation, and balance are valued.

• Competitive pay, comprehensive medical/dental/life and disability coverage, 401(k) with employer match, professional development support, and a flexible, friendly workplace.

At QDSS, we are more than an engineering company—we are a force for innovation and positive change. With over 25 years of proven expertise in solving mission‑critical challenges, we empower our team to push boundaries, combining deep industry knowledge, cutting‑edge technology, and a collaborative "think tank" approach.

Our vision is to be the trusted partner of choice for our defense and aerospace clients, delivering secure, sustainable, and world‑class solutions that build a brighter future.