Information Systems Engineer - Secret Clearance

Immediately Hiring 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 a 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.

Key Responsibilities

• Administer and support test systems and lab environments (Linux, Windows, networking)


• Ensure cybersecurity compliance of test equipment using tools like Nessus, Splunk, and 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

Required Qualifications

• Bachelor’s degree in Information Systems, Computer Science, Engineering, or related STEM field


• 5+ years of experience in systems administration (Linux, Windows, networking)


• Experience with user account management, software installation, and system support


• Strong troubleshooting skills across hardware, software, and networked systems


• Active Secret security clearance required (U.S. Citizenship required)

Preferred Qualifications

• DoD 8570 IAT II certification (Security+, CISM, etc.)


• 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

The QDSS Advantage:  

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. 

What You’ll Find Here :

• 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. 


• Benefits Include 


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

At Quest Defense Systems and Solutions, we don’t just build technology — we engineer the future. From next-generation aerospace solutions to cutting-edge defense systems, we tackle the toughest, mission-critical challenges that keep people safe and push the boundaries of innovation. This is where problem-solvers, innovators, and visionary thinkers come together to shape the future. With over 25 years of aerospace and defense engineering expertise, our commitment to delivering high-quality, transformative solutions sets us apart — not just as an industry leader, but as a driving force for impactful change. Together, we’re not just leading the industry — we’re revolutionizing it.

Quest Defense provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.