Full Stack Software Engineer (Platform)

Join WHOOP, a leading performance optimization company, as a Full Stack Software Engineer. In this role, you will 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 will work across the stack, from frontend component libraries to backend localization services, and contribute to the infrastructure and tooling that power design systems and internationalization at scale. This position offers a flexible vacation policy, paid parental leave, stock options, a complimentary WHOOP membership, and a competitive benefits package.

• Concevoir et construire des systèmes frontend et backend partagés qui permettent à WHOOP de fournir des expériences cohérentes et accessibles à l'échelle mondiale.
• Développer et maintenir des composants frontend réutilisables et des bibliothèques partagées en utilisant des frameworks modernes (React/TypeScript).
• Collaborer avec les équipes Produit, Design, Plateforme et Localisation pour livrer des solutions évolutives.

• 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
• Exposure to design tokens, managing tokens for color modes and multiple themes
• Backend experience in languages like Java, Python, or C#
• Strong communication skills and ability to collaborate with technical and non-technical stakeholders
• Exposure to translation platforms or localization pipelines
• Experience with accessibility standards (WCAG) and inclusive design
• Familiarity with frontend architecture and building reusable UI components or design systems
• Experience with relational databases such as PostgreSQL or MySQL
• Experience building and integrating RESTful APIs
• Proficiency in web development using JavaScript/TypeScript, React, and Node.js
• Understanding of internationalization (i18n) and localization best practices
• Experience implementing RTL support using CSS logical properties and direction-based styling
• Familiarity with cloud delivery platforms (Cloudflare, Vercel, CloudFront)
• Familiarity with CSS, responsive design, and modern layout techniques
• Experience with design system tooling (e.g., Storybook) or cross-platform component libraries
• Experience with design implementation, taking mockups in tools like Figma and making them reality
• Experience working with build systems and CI/CD tools (CircleCI, GitHub Actions)
• Familiarity with bidirectional (BiDi) text handling and localization edge cases
• 2–4 years of professional software engineering experience
• Interested in the role, but don’t meet every qualification? We encourage you to still apply! At WHOOP, we believe there is much more to a candidate than what is written on paper, and we value character as much as experience. As we continue to build a diverse and inclusive environment, we encourage anyone who is interested in this role to apply