Mechanical Design Engineer Test Systems

Immediately hiring Mechanical Design Engineer – Test Systems!

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 are hiring a Mechanical Design Engineer to design and develop advanced test systems and mechanical assemblies supporting high-reliability aerospace and defense hardware. In this role, you’ll work across mechanical design, CAD modeling (Creo), and system integration, building solutions used for environmental testing (vibration, thermal, RF, and electro-optical systems).

You’ll collaborate with cross-functional engineering teams to take designs from concept through validation, ensuring performance in mission-critical environments. This is a hands-on role ideal for engineers who enjoy solving complex problems and working on highly integrated systems.

Location: Scottsdale, AZ (relocation support available)
Clearance: U.S. Citizenship required; active clearance preferred open to candidates with the ability to obtain one.

Key Responsibilities: 

• Design and develop mechanical test systems and fixtures for environmental testing (vibration, thermal, hydraulic, RF, electro-optical)


• Create and maintain 3D CAD models and drawings (Creo / ProE), including GD&T and tolerance analysis


• Support system integration, validation, and testing to meet accuracy, reliability, and performance requirements


• Troubleshoot and resolve issues in production and test environments, recommending design improvements


• Collaborate with electrical, systems, and manufacturing teams on hardware integration and packaging


• Contribute to continuous improvement, root cause analysis, and design optimization

Required Qualifications

• Bachelor’s degree in Mechanical Engineering or related STEM field

• 5+ years of experience in mechanical design, test systems, or product development


• 3+ years of experience with 3D CAD tools (Creo / ProE preferred)


• Strong knowledge of GD&T, tolerance analysis, and mechanical design principles


• Experience supporting hardware integration, validation, or production environments


• U.S. Citizenship required; Clearance or ability to obtain a Secret clearance

Preferred Qualifications

• Active Clearance


• Experience with mechanical packaging and electro-mechanical systems


• Background in aerospace, defense, or high-reliability systems


• Experience with environmental testing (vibration, shock, thermal, ESS)


• Familiarity with configuration management tools (Windchill, PDM)


• Exposure to thermal or structural analysis


• Systems engineering or cross-functional integration experience

  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

$65 - $70 USD

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.