Validation Engineer Product Definition

We don’t just build technology—we engineer the future. From next-gen aerospace to cutting-edge defense systems, we tackle the toughest, mission-critical challenges that keep people safe and push the limits of innovation. This is where problem-solvers, innovators, and big thinkers thrive.   

Quest Defense Systems and Solutions is seeking a Validation Engineer - Product Definition to support the development of aerospace structures, engine controls, gas turbine components, and Model-Based Definition (MBD) initiatives. In this role, you will work closely with Mechanical Design Engineers to create and validate 3D CAD models, 2D engineering drawings, and digital product definitions that meet engineering, manufacturing, and customer requirements.

You will develop detailed component models and drawings, perform tolerance analyses, and ensure compliance with ASME standards while supporting digital transformation initiatives across aerospace programs.

Location: This position is 100% onsite in Marietta, GA. 

Citizenship: Due to the nature of this role, applicants must be US Citizen

Key Responsibilities

• Develop and maintain 3D CAD models using Siemens NX.
• Create detailed 2D engineering drawings and Model-Based Definitions (MBD).
• Produce solid models for piece parts, housings, assemblies, and engine components.
• Create and maintain Bills of Material (BOMs) in Teamcenter.
• Perform tolerance stack-up and geometric studies to ensure manufacturability.
• Interpret engineering requirements and design intent.
• Review engineering drawings for completeness, accuracy, and compliance with ASME Y14.5 standards.
• Participate in design reviews as the Product Definition representative.
• Support engineering changes, configuration management, and documentation updates.
• Revise existing engineering drawings to resolve discrepancies and implement design changes.
• Validate supplier-created CAD models against engineering requirements.
• Resolve technical inquiries involving:
  • Drawing interpretation
  • 3D modeling practices
  • Assembly interference/clash analysis
• Support manufacturing, quality, and supply chain teams during product development.
• Ensure all design data is properly documented, controlled, and export compliant.

Required Qualifications

• 7-8 years of Product Definition, CAD Design, or Mechanical Drafting experience
• Proficiency using Catia V5 preferred or 3DExperience or Siemens NX to model parts, create assemblies, and perform clash analysis.
• Proficient understanding of geometric dimensioning and tolerancing (GD&T).
• Experience reading and interpreting 2D engineering drawings, parts lists, and bill of materials.
• Experience reading and interpreting manufacturing design process specifications.
• Experience with different manufacturing and assembly methods such as machining, sheet metal forming, and welding.
• Experience designing and developing tooling for part fabrication and assembly, including critical interchangeable and close tolerance mating features.
• Experience scanning parts, scanning tools, and processing point cloud data.
• Familiarity with ASME Y14.41 Model-Based Definition.
• Experience with Digital Product Definition (DPD).
• Strong understanding of:
  • Engineering drawing interpretation
  • Mechanical assemblies
  • Tolerance stack-ups
• Experience creating:
  • 3D models
  • 2D drawings
  • Assembly layouts
• Knowledge of manufacturing methods and machining processes.
• Strong communication and collaboration skills.
• Ability to work in a highly regulated aerospace environment.
• Due to the nature of these roles, applicants must be US Citizen.

Preferred Qualifications

• Bachelor's or Associate's degree in Mechanical Engineering, Aerospace Engineering, Drafting Technology, Engineering Technology, or related STEM discipline.
• Experience with NC programming preferred but not required.
• Experience in adoption and/or integration of emerging technologies (e.g., generative AI, automation platforms, digital assistants) into day-to-day operations for continuous improvement.

Desired Skills

• Attention to detail
• Problem solving
• Collaboration
• Time management
• Technical documentation
• Design for Manufacturability (DFM)
• Engineering change management

Physical Requirements & Work Environment:

• Mostly Office Environments, Occasional Shop Floor involvement.
• Substantial amounts of telephone, video conferencing and computer work.
• Heavily Regulated Industries with strict adherence to procedures.
• Flexibility to meet business deadlines by staying late or arriving early.
• Typical 8 hour days plus lunch / 40 hour weeks / core (required) hours are 9AM to 4PM
• Ability to use personal transportation to visit customer locations

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.

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.