Software Engineer II (Full Stack Web, Client Platform)

About this role

At WHOOP, we're on a mission to unlock human performance and healthspan. WHOOP empowers members to perform at a higher level and live longer through a deeper understanding of their bodies and daily lives. Protecting our members’ data and ensuring our systems scale securely and reliably is core to this mission.

We are looking for a Software Engineer II (Full Stack Web) to join our Client Platform team, focused on Design Systems and Translations. In this role, you’ll design and build shared frontend and backend systems that enable WHOOP to deliver consistent, high-quality, and globally accessible experiences across web and mobile surfaces. You’ll work across the stack — from frontend component libraries to backend localization services — while also contributing to the infrastructure and tooling that power design systems and internationalization at scale.

This role is a great fit for an engineer who enjoys working across web technologies while also tackling platform challenges like design system consistency, localization workflows, and right-to-left (RTL) support. You will play a key role in enabling global expansion by making it easy for teams to build localized, accessible, and visually consistent experiences.

### RESPONSIBILITIES:

• Design, build, and maintain full stack systems that power WHOOP’s design system and translation infrastructure
• Develop and maintain reusable frontend components and shared libraries using modern frameworks (React/TypeScript)
• Implement and improve internationalization (i18n) support, including right-to-left (RTL) layouts and bidirectional text handling
• Partner with Design to build and scale a unified design system across web and mobile platforms
• Build and maintain backend services and APIs that support translation workflows, content delivery, and localization pipelines
• Ensure UI components are flexible, accessible, and adaptable to different languages, screen sizes, and regions
• Improve and maintain build and CI/CD syst...