Mechanical Engineer II (NPI, Apparel & Accessories)

At WHOOP, we’re on a mission to unlock human performance and healthspan. As a member of the Mechanical Engineering Apparel & Accessories team, you’ll help shape the future of wearable technology by developing innovative, high-performance products that integrate seamlessly into users’ lives.

WHOOP operates with urgency because our mission demands it. We build products for people who push their limits—and we hold ourselves to the same standard. We expect engineers to go deep technically, collaborate relentlessly, and take pride in execution. The pace is fast, expectations are high, and the work is deeply meaningful. This isn’t a role where you follow a blueprint. If you’re energized by complex challenges, cross-functional collaboration, and the opportunity to ship hardware at scale, this role will push you—and reward you.

We are seeking a talented and driven Mechanical Engineer II to own the mechanical design and development of next-generation WHOOP bands and wearable accessories. This individual will play a critical role in creating robust, scalable, and manufacturable hardware solutions that meet the needs of a fast-paced and highly collaborative product development environment.

Own the end-to-end mechanical design of new WHOOP bands and related wearable accessories, from concept through production.

Collaborate closely with cross-functional teams including Industrial Design, Electrical Engineering, Product, and Manufacturing to develop user-centric, durable, and manufacturable solutions.

Create and manage detailed CAD models, assemblies, and 2D drawings to support prototyping and production.

Own and drive second sourcing initiatives for mechanical components and assemblies to diversify the supply base and reduce manufacturing risk.

Collaborate with product marketing to support seasonal product launches.

Perform root-cause analysis and implement design improvements for quality, reliability, and performance enhancements.

Support prototype builds, testing, and validation both in-house and at global manufacturing partners.

Contribute to the development of material specifications, DFM/DFA guidelines, and mechanical standards for wearable devices.

Support and mentor junior team members and share best practices within the engineering organization.

Up to 20% international travel to contract manufacturers and suppliers.

B.S. in Mechanical Engineering or related field.

3 - 4 years of experience in mechanical design, preferably in consumer electronics, wearables, or soft goods design.

Strong proficiency in SolidWorks, tolerance analysis, and mechanical drawing creation.

Experience with soft goods integration, injection molding, sheet metal fabrication, and materials like silicones, textiles, elastomers, and plastics.

Familiarity with second sourcing, supplier qualification, and risk mitigation strategies in manufacturing.

Strong communication and organizational skills with the ability to work effectively across disciplines and time zones.

Passion for product development and attention to detail.

Experience working with offshore manufacturing partners preferred.

Knowledge of wearables, sports/fitness accessories, or human factors engineering preferred.

Familiarity with FEA tools, rapid prototyping, and environmental testing preferred.