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WHOOPWHOOPBoston, MA

Software Engineer II (Full Stack Web, Client Platform)

Builds full-stack systems for design systems, translations, and internationalization, including React components, backend APIs, and CI/CD pipelines. Requires 2-4 years experience with JavaScript/TypeScript, React, Node.js, and localization practices.

Salary not listed
On-site2+ YOEFullstack Engineering

About the role

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

Qualifications

  • 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
  • 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

Skills

ReactTypeScriptJavaScriptNode.jsREST APIsCSSPostgresCircleCIGitHub ActionsStorybookFigmaI18NRtlWcag

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