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STR

Senior Mechanical Design Engineer

Sorry, this job was removed at 12:09 a.m. (EST) on Thursday, Nov 20, 2025
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In-Office
Woburn, MA
Easy Apply
In-Office
Woburn, MA

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About the Team

STR’s Sensors Division is at the forefront of developing advanced signal processing algorithms and prototyping systems for next-generation radar and electronic warfare technologies.  Mechanical engineering design, development, and integration support is sought for advanced and operational prototype systems.

STR takes pride in creating a culture of innovation and collaboration. We collaborate with a dynamic group of research engineers across STR, academic researchers, and industry partners to develop practical and effective solutions to RF sensing and counter-sensing challenges. Together, we're dedicated to tackling some of the toughest problems faced by our national security-focused clients.

If you're seeking an opportunity to apply your deep technical knowledge and creativity to make a lasting impact in national security, we invite you to join us.
The Role:

As a Mechanical Design Engineer, you will have the opportunity to work with a team to design, build, integrate, and test sensing and counter sensing systems for radar, electronic warfare, sonar, and other applications.

What you will do:

  • Design integrated systems that meet specific requirements and constraints. This involves understanding the interactions between components, ensuring functionality, efficiency, and reliability in mechanical systems
  • Performance trade studies and analyses of proposed hardware architectures. Systems predominantly field deployable prototypes with the objective of transitioning to low-volume product systems
  • Review system effectiveness and identify opportunities to advance and/or mature subsystems and system capabilities
  • Document system design and performance for customer review. Present results to customers
  • Lead and work with small, multi-disciplinary teams to architect, implement, and test RF hardware systems enabling novel sensing, electronic warfare, and signal processing systems

Who you are:

  • Ability to obtain a security clearance, for which U.S. citizenship is required by U.S. Government 
  • BS, MS, or PhD in Mechanical Engineering, Applied Mathematics, Physics, or a related technical discipline 
  • 3-5+ years’ of relevant experience depending on degree
  • Specific skillsets include:
    • Strong Mathematical, troubleshooting, written, and verbal communication skills
    • Experience creating prototypes to test and validate designs before full-scale production. This allows for iterative design improvements, reducing risks and ensuring that final products meet user needs and expectations 
    • Proficient in tools like AutoCAD and SolidWorks, enabling precise design and visualization of mechanical components
    • Familiarity with various materials and their properties that enables the selection of the right materials to support innovative and operational engineering solutions
    • Knowledgeable in FEA techniques to simulate physical phenomena and predict how products will react to real-world forces
    • Skilled in planning, organizing, and executing projects from conception to completion, with strong record-keeping and documentation to track design evolution and progress
    • Adept at identifying issues and developing innovative solutions in mechanical systems
    • Ability to convey complex technical information clearly and effectively to diverse audiences
    • Strong ability to work collaboratively within multidisciplinary teams. Collaborate with the team to quantify goals, system performance objectives, metrics, dependencies, and risks to guide your work
    • Understanding of industry regulations and standards ensures that designs comply with safety and environmental guidelines

Even Better:

  • Active Secret or TS/SCI security clearance
  • Advanced degree in Mechanical Engineering, Applied Mathematics, Physics, or a related technical discipline
  • Experience interacting with decision-makers and customers to translate mission needs into an end-to-end analytical solution
  • Prior experience with:
    • Designing for manufacturability, producibility, and cost constraints
    • Applying novel, innovative and interdisciplinary approaches to challenging engineering problems
  • Creating and presenting briefings to customers and senior management to provide both high-level and deep technical solution explanations

Pay Information
Full-Time Salary Range: $130,000 - $150,000

The salary range listed is based on external market data. Offers are based on factors, such as but not limited to, the candidate’s experience, education, training, key skills/critical skills, security clearances, and prevailing market and business conditions.

STR is a growing technology company with locations near Boston, MA, Arlington, VA, near Dayton, OH, Melbourne, FL, and Carlsbad, CA. We specialize in advanced research and development for defense, intelligence, and national security in: cyber; next generation sensors, radar, sonar, communications, and electronic warfare; and artificial intelligence algorithms and analytics to make sense of the complexity that is exploding around us.

STR is committed to creating a collaborative learning environment that supports deep technical understanding and recognizes the contributions and achievements of all team members. Our work is challenging, and we go home at night knowing that we pushed the envelope of technology and made the world safer.

STR is not just any company. Our people, culture, and attitude along with their unique set of skills, experiences, and perspectives put us on a trajectory to change the world. We can't do it alone, though - we need fellow trailblazers. If you are one, join our team and help to keep our society safe! Visit us at www.str.us for more info.


STR is an equal opportunity employer. We are fully dedicated to hiring the most qualified candidate regardless of race, color, religion, sex (including gender identity, sexual orientation and pregnancy), marital status, national origin, age, veteran status, disability, genetic information or any other characteristic protected by federal, state or local laws.

If you need a reasonable accommodation for any portion of the employment process, email us at [email protected] and provide your contact info.

Pursuant to applicable federal law and regulations, positions at STR require employees to obtain national security clearances and satisfy the requirements for compliance with export control and other applicable laws.

HQ

STR Woburn, Massachusetts, USA Office

600 W Cummings Park, Woburn, MA, United States, 01801

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