Systems Engineer

Quest Defense Systems and Solutions is actively hiring System Engineer- Test Solution Engineering (TSE) organization within the Hardware Discipline Center is a multidisciplinary team that designs and delivers advanced test solutions in support of production lines across the company’s missile and defense portfolio. Our solutions span engineering labs, production environments, and fielded systems. 

As a Systems Engineer within TSE, you will collaborate with cross-functional engineering teams to design, model, integrate, and validate subsystem-level test solutions that support all phases of the product lifecycle, including early demonstrations, engineering tests, design verification, production, and sustainment. This is a hands-on role involving Model-Based Systems Engineering (MBSE), requirements development, test architecture, problem-solving, and coordination with technical subject matter experts. 

Location: Onsite Tucson, AZ.  Relocation assistance is available

Citizenship: Due to the nature of the work, US Citizenship is required. 

Clearance:    Active DoD Security Clearance

In this Role, you will:

• Develop and implement subsystem models using Model-Based Systems Engineering tools and methods. 

• Collaborate with multidisciplinary teams to define capabilities, derive requirements, and establish interfaces, behaviors, and architecture. 

• Communicate test equipment needs, requirements, and constraints to Test Equipment designers. 

• Manage and maintain requirements and traceability throughout the product lifecycle. 

• Leverage reusable models, architectures, and test environment requirements to improve development efficiency. 

• Support integration, verification, and validation activities for both hardware and software-based test systems. 

• Interact with SMEs to fully understand system behaviors, resolve issues, and support engineering trade studies. 

• Participate in design reviews, technical discussions, and cross-functional coordination. 

• Support problem-solving, debugging, and continuous improvement efforts. 

• (As experience increases) Mentor junior engineers and contribute to team development. 

Qualifications You Must Have: 

• A bachelor’s degree in science, Technology, Engineering, or Mathematics (STEM) and 2-10+ years of relevant engineering experience 

  (higher experience levels also acceptable; equivalent master’s degree combinations recognized). 

• Systems Engineering experience involving test requirements development, test planning, test methodologies, embedded functional test, integration, verification, and validation. 

• Experience developing and managing system requirements across the engineering lifecycle. 

• Experience with Model-Based Engineering tools and languages such as: 

• Rhapsody, IBM Rational Model Manager 

• Cameo Systems Modeler / Enterprise Architect 

• Teamwork Cloud 

• SysML and/or UML 

• Experience with test-related activities across design, production, or sustainment environments. 

• Ability to obtain and maintain a U.S. security clearance prior to start; U.S. citizenship required. 

Preferred Qualifications: 

• Experience with Agile development processes and tools. 

• Experience with DOORS or other requirements management tools. 

• Experience in development, environmental testing, qualification testing, production, or manufacturing test environments. 

• Experience with design-for-test, embedded test techniques, and margin analysis. 

• Strong troubleshooting and debugging skills. 

• Ability to identify process improvements or customer needs and communicate them effectively. 

• Experience leading or mentoring engineers (for higher levels). 

• Experience with EVMS, program planning, EAC development, or cross-functional task coordination (plus for senior candidates). 

• Demonstrated adaptability, urgency, risk-informed decision making, and strong communication skills. 

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

$100,000—$140,000 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.