# Software Engineer II (Full Stack Web, Client Platform)

**Company:** [WHOOP](https://hotfix.jobs/companies/whoop)
**Location:** Boston, MA
**Role:** Fullstack Engineering
**Experience:** 2+ years
**Skills:** React, TypeScript, JavaScript, Node.js, REST APIs, CSS, Postgres, CircleCI, GitHub Actions, Storybook, Figma, I18N, Rtl, Wcag
**Posted:** 2026-04-21

> 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.

## Job Description

## 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

## Similar roles

- [Software Engineer Intern](https://hotfix.jobs/jobs/16a6ea85-15b6-405a-af0d-398e3c4e41dd) - Cloudflare - Austin, TX
- [Software Engineer](https://hotfix.jobs/jobs/b0b9b3b7-23d6-4e8a-9f75-3a5a2de4bf30) - Hudl - Lexington, KY - $90k – $130k/yr
- [Full Stack Engineer, Link](https://hotfix.jobs/jobs/c5b0b835-f2b0-4b5e-a592-8b2f6ffd8fa9) - Stripe - New York, NY
- [Software Engineer 3, Documentation Platform](https://hotfix.jobs/jobs/8b499105-5345-417b-b016-31fa3a91e79c) - MongoDB - New York, NY - $106k – $209k/yr
- [Software Engineer](https://hotfix.jobs/jobs/45f21207-4a96-4a75-966c-e85be6558b67) - Traba - New York, NY - $140k – $200k/yr

**Apply:** https://hotfix.jobs/jobs/1c865f13-bdca-4de3-acf8-24afbf9b5b6c
**Canonical:** https://hotfix.jobs/jobs/1c865f13-bdca-4de3-acf8-24afbf9b5b6c