Senior Software Engineer

Responsibilities

• Develop test software applications, libraries, and instrument drivers (C#, C++)
• Integrate software with automated test equipment (ATE) and lab instrumentation
• Troubleshoot software and hardware integration issues in production environments
• Collaborate with electrical, systems, and manufacturing engineers
• Support full software lifecycle (requirements → development → validation)
• Work in a fast-paced environment supporting real production systems
• Engineers from aerospace, defense, manufacturing, or industrial automation backgrounds are encouraged to apply.
• Required Qualifications
• 5+ years of experience in software development (C#, C++, or similar)
• Experience with test systems, hardware integration, or instrumentation
• Strong troubleshooting skills across software and physical systems
• Experience with Windows OS, Visual Studio, Azure DevOps
• Bachelor's degree in STEM (or equivalent experience)
• U.S. Citizenship (clearance eligible)

Requirements

• Experience with Automated Test Equipment (ATE)
• Familiarity with NI tools (VISA, MAX, etc.) or LabVIEW
• Knowledge of hardware interfaces (TCP/IP, UDP, RS-422)
• Background in aerospace, defense, or manufacturing
• 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.
• Full compensation package is based on candidate experience and certifications
• Pay Ranges
• $69 - $74 USD

Benefits

Additional Information

We are hiring Senior Software Engineer - Test Systems (ATE / C# / Hardware Integration) to build software for automated test systems (ATE) used in aerospace and defense. Hands-on role working across C#, C++, hardware integration, and real-world production systems. We hire and grow engineers who thrive on solving hard problems and turning bold ideas into real-world solutions. If you're driven to design, develop, and test technology that truly makes an impact, you'll feel at home here. Join Quest Defense Systems & Solutions as our Senior Software Engineer to develop software for automated test equipment (ATE) and factory test systems supporting advanced aerospace and defense products. This is a hands-on engineering role focused on building applications, integrating hardware, and troubleshooting real-world test environments. You'll work directly with instrumentation, production systems, and hardware interfaces, making a tangible impact on product quality and delivery. Location: Tucson or Scottsdale, AZ (onsite) Relocation: Available Clearance: U.S. Citizenship required (Secret Clearance preferred)

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