Senior Mechanical Engineer (Manufacturing Test)

Whoop•Boston, MA

1d•Onsite

About The Position

WHOOP is hiring a Senior Mechanical Engineer to develop mechanical test fixtures and systems that enable reliable, scalable testing of WHOOP products throughout product development and mass production. The role drives fixture development from early concepts through production deployment, partnering with contract manufacturers and translating test requirements into robust mechanical designs. The engineer provides technical direction and engineering judgment while working across Hardware Test, Manufacturing, Electrical, Firmware, and Quality Engineering. The position is based in WHOOP’s Boston, Massachusetts office. The successful candidate must be prepared to relocate if necessary to work from that office. Travel of up to 15%, domestically and internationally, is required. The U.S. base salary range is $150,000–$195,000, with benefits and an equity package.

Requirements

Bachelor’s degree in Mechanical Engineering, Mechatronics, or a related technical discipline.
At least 5 years of experience designing complex mechanical systems, fixtures, automation equipment, or similar hardware for manufacturing or production environments.
Strong mechanical design fundamentals, including tolerance analysis, GD&T, material selection, manufacturing processes, fastening methods, and DFM.
Advanced proficiency with 3D CAD and engineering drawings.
Experience developing mechanical fixtures or equipment from requirements through prototype, validation, release, and production support.
Experience co-developing mechanical systems with contract manufacturers, suppliers, or external engineering partners, including technical direction and design review.
Experience creating and maintaining production engineering documentation, revision control, and PLM systems such as Arena.
Strong mechanical debugging and root-cause analysis skills, including using data to characterize and improve fixture performance.
Working knowledge of electrical systems, wiring, instrumentation, and PCBAs sufficient to integrate and debug electromechanical test fixtures.
Experience using manufacturing data and statistical methods to evaluate repeatability, variation, and fixture capability.
Strong project ownership, communication, and cross-functional collaboration skills, with the ability to independently drive complex fixture-development projects.
Ability to travel up to 15%, domestically and internationally.
Commitment to using AI tools in day-to-day work and ensuring AI-assisted work meets high-quality standards.

Nice To Haves

SolidWorks experience is strongly preferred.
Familiarity with SPC.
Familiarity with Python or other scripting languages for engineering analysis, automation, or debugging.

Responsibilities

Drive mechanical fixture development for complex manufacturing test applications from concept through validation, production deployment, and sustaining, partnering with contract manufacturers on design and execution.
Translate test and product requirements into robust fixture designs, balancing performance, repeatability, complexity, cost, cycle time, and maintainability.
Design fixtures directly when appropriate and provide technical direction and design review for solutions co-developed with manufacturing partners.
Apply mechanical engineering principles, including tolerance analysis, GD&T, material selection, datum strategy, alignment, DFM, and manufacturing process selection, to review and validate fixture designs.
Collaborate with contract manufacturers during design, sourcing, fabrication, qualification, and production readiness, including providing on-site support during NPI and product builds.
Lead fixture debugging and root-cause investigations, using structured problem solving and data to address tolerance, alignment, wear, loading, repeatability, and fixture-performance issues.
Maintain production-ready CAD, drawings, BOMs, assembly instructions, and fixture specifications through established PLM and change-control processes.
Collaborate across engineering teams to define fixture requirements and improve fixture design, qualification, maintenance, and development practices.
Use AI tools in day-to-day tasks while ensuring AI-assisted work meets the same high-quality standards as personal contributions.