Software Engineer II (Full Stack Web, Client Platform)
About The Position
At WHOOP, the mission is to unlock human performance and healthspan by empowering members through a deeper understanding of their bodies and daily lives. Protecting member data and ensuring system scalability, security, and reliability are core to this mission. WHOOP is seeking a Software Engineer II (Full Stack Web) to join the Client Platform team, focusing on Design Systems and Translations. This role involves designing and building shared frontend and backend systems to deliver consistent, high-quality, and globally accessible experiences across web and mobile platforms. The engineer will work across the stack, from frontend component libraries to backend localization services, and contribute to the infrastructure and tooling for design systems and internationalization at scale. This position is ideal for an engineer who enjoys working with web technologies and tackling platform challenges such as design system consistency, localization workflows, and right-to-left (RTL) support, playing a key role in global expansion by facilitating localized, accessible, and visually consistent experiences.
Requirements
- 2–4 years of professional software engineering experience
- Proficiency in web development using JavaScript/TypeScript, React, and Node.js
- Experience building and integrating RESTful APIs
- Familiarity with frontend architecture and building reusable UI components or design systems
- Experience with design implementation, taking mockups in tools like Figma and making them reality
- Understanding of internationalization (i18n) and localization best practices
- Familiarity with CSS, responsive design, and modern layout techniques
- Experience with relational databases such as PostgreSQL or MySQL
- Experience working with build systems and CI/CD tools (CircleCI, GitHub Actions)
- Strong communication skills and ability to collaborate with technical and non-technical stakeholders
Nice To Haves
- Experience implementing RTL support using CSS logical properties and direction-based styling
- Familiarity with bidirectional (BiDi) text handling and localization edge cases
- Experience with design system tooling (e.g., Storybook) or cross-platform component libraries
- Exposure to translation platforms or localization pipelines
- Exposure to design tokens, managing tokens for color modes and multiple themes
- Backend experience in languages like Java, Python, or C#
- Familiarity with cloud delivery platforms (Cloudflare, Vercel, CloudFront)
- Experience with accessibility standards (WCAG) and inclusive design
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 systems (CircleCI, GitHub Actions) to support fast and reliable delivery
- Collaborate cross-functionally with Product, Design, Platform, and Localization teams to deliver scalable solutions
- Participate in code reviews and contribute to best practices around frontend architecture, localization, and design systems
Benefits
- Meaningful equity
- Generous equity package
Stand Out From the Crowd
Upload your resume and get instant feedback on how well it matches this job.
What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
No Education Listed
