Mechanical Engineer II; NPI in Boston

At WHOOP, we’re on a mission to unlock human performance and healthspan. WHOOP empowers members to perform at a higher level through a deeper understanding of their bodies and daily lives.

As a Mechanical Engineer II on the Hardware NPI Team, you will contribute to the design and development of WHOOP’s innovative hardware solutions – rechargeable energy accessories. Your role will involve driving creative mechanical design solutions with independence and sound technical judgement in a fast‑paced, execution‑driven setting. You’ll collaborate with multidisciplinary engineers and designers, support prototyping, mechanical design, and testing, and work closely with suppliers and contract manufacturers worldwide to execute engineering validation builds with a focus on quality, risk management, and clear communication.

• Own critical parts of the next WHOOP Hardware Products
• Design, prototype, and test complex mechanical components around microelectronics, meeting stringent technical, performance, and industrial design requirements to guide projects from concept through manufacturing release.
• Develop and present multiple design solutions for novel and complex technical challenges, articulating them clearly to cross‑functional teams and documenting the design process and specifications thoroughly.
• Generate technical documentation such as 3D files, 2D drawings, bills of material (BOM’s), and Engineering Change Orders (ECO’s) following the product development cycle timeline.
• Communicate engineering requests and changes to vendors and contract manufacturers as the product development cycle progresses.
• Support planning and execution of verification and validation plans, leveraging design of experiments (DOE) methodologies to drive understanding, uncover insights, and deliver actionable results that enhance product quality, performance, and manufacturability.
• Support and perform thorough engineering root‑cause analyses to identify and resolve issues.
• Collaborate with senior engineers to evaluate new technologies and manufacturing methods.
• Up to 20% travel to contract manufacturers and suppliers internationally.

• Bachelor’s degree in Mechanical Engineering or related field.
• 2+ years of experience in the design of complex mechanical products, preferably for consumer electronics, wearables, or medical devices.
• Experience with Solid Works CAD best practices, including advanced assemblies, complex surfacing, configuration management, and applying DFx feedback.
• Hands‑on experience in operating and maintaining rapid prototyping tools to craft proof‑of‑concept models.
• Strong communication skills and comfort working with cross‑functional teams and external partners.
• Experience in high‑quality consumer electronics or wearable technologies.
• Familiarity with validation testing methods and statistical analysis tools.
• Experience with high‑volume manufacturing processes (e.g., injection molding, sheet metal design, metal injection molding) and manual assembly.
• Working experience in a fast‑paced or startup environment.
• A passion for health, or wearable technologies, and designing human‑centered solutions in this space.

This role is based in the WHOOP office located in Boston, MA. The successful candidate must be prepared to relocate if necessary to work out of the Boston, MA office.

The U.S. base salary range for this full‑time position is $110,000–$150,000. Salary ranges are determined by role, level, and location. Within each range, individual pay is based on factors such as job‑related skills, experience, performance, and relevant education or training. In addition to the base salary, the successful candidate will receive benefits and a generous equity package.

WHOOP is an Equal Opportunity Employer and participates in E‑verify to determine employment eligibility.