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Mechanical Engineer, Principal

Date: Jan 25, 2023

Location: Waltham, Massachusetts, US

Company: QinetiQ

Who Are We?

We are a world-class team of professionals who deliver next generation technology and products in robotic and autonomous platforms, ground, soldier, and maritime systems in 50+ locations world-wide. Much of our work contributes to innovative research in the fields of sensor science, signal processing, data fusion, artificial intelligence (AI), machine learning (ML), and augmented reality (AR).

QinetiQ Inc.’s dedicated experts in defense, aerospace, security, and related fields all work together to explore new ways of protecting the American Warfighter, Security Forces, and Allies. Being a part of QinetiQ Inc. means being central to the safety and security of the world around us. Partnering with our customers, we help save lives; reduce risks to society; and maintain the global infrastructure on which we all depend. 

Why Join QinetiQ Inc.?

If you have the courage to take on a wide variety of complex challenges, then you will experience a unique working environment where innovative teams blend different perspectives, disciplines, and technologies to discover new ways of solving complex problems.  In our diverse and inclusive environment, you can be authentic, feel valued, be respected, and realize your full potential. QinetiQ Inc. will support you with workplace flexibility, a commitment to the health and well-being of you and your family and provide opportunities to work with a purpose. We are committed to supporting your success in both your professional and personal lives.

Mechanical Engineer, Principal

Job purpose:

Candidate will be responsible for design and development of military and commercial hardware products.  Products include robotic ground vehicles, vehicle autonomy hardware, ground robots and ruggedized electronic hardware products.  Additional products include ruggedized military electronic equipment for maritime applications.  Acting as a technical lead on projects, the candidate will perform design tasks and analysis, organize development tasks and product testing while coordinating activities to meet program deadlines.  Candidate should be proficient using 3-D Solid Modeling software (PTC CREO preferable), have experience with metal fabrication design and injection molded plastic design, and have an understanding of manufacturing and testing practices. The candidate shall also be “hands-on” with abilities support mechanical design and product issues related to various DOD pre-production and production programs.  Candidate will also participate in the formal Engineering Change process.  The candidate will provide direction and guidance to other engineers which may include direct report responsibilities. 

Key responsibilities and accountabilities:

  1. Facilitate design tasks, establish project goals and track progress.
  2. Perform design and drawing checking and approval.
  3. Electromechanical design, layout and modeling of electro-mechanical assemblies, robotic systems and assorted military hardware.
  4. Create design specifications.
  5. Perform system level tolerance analysis.
  6. Perform structural, dynamic and thermal analysis.
  7. Interface with vendors and identify sources of supply for critical fabrication items.
  8. Creation of detail designs and drawings for fabrication.
  9. Interface with customers on a project engineering level.
  10. Interface with Business Development on DOD proposals, creating technical volumes and cost estimation for development programs.


Required knowledge:
Design – Knowledge of design techniques, tools, and principals involved in production of precision technical plans, blueprints, drawings, and models. 


Manufacturing – Experience creating and working with formal design/development processes with an emphasis on transitioning projects from prototype development to production.


Required Skills:


Computer Aided Design – Must have experience with 3D CAD modeling tools.  Experience with PTC Creo design tool a plus.

Drafting – Must have experience with creation of detailed drawing and geometric tolerancing (ASME Y14.5).

Analysis – Must have experience with structural and thermal analysis (shock and vibration analysis a plus).

Communication- Must demonstrate excellent verbal and non-verbal communication skills.

Computer- Experience with MS Word, Excel, PowerPoint.



  1. 7-12 years’ experience in mechanical design in all aspects of a product lifecycle.
  2. Direct project engineering or technical lead experience managing design tasks
  3. Knowledge of sheet metal fabrication and machining processes
  4. Experience in processing Engineering Changes to documentation on DOD programs.
  5. Mechanical Engineering BS (or equivalent), MS preferred.


No One Has Time for Long Job Applications!

We completely understand, that is why we have made the application process easy. We promise. This will be simple.


If because of a medical condition or disability you need a reasonable accommodation for any part of the employment process, please send an e-mail to or call (540) 658-2720 Opt. 4 and let us know the nature of your request and contact information.

QinetiQ Inc. is an Equal Opportunity/Affirmative Action employer. All Qualified Applicants will receive equal consideration for employment without regard to race, age, color, religion, creed, sex, sexual orientation, gender identity, national origin, disability, or protected Veteran status.