Full Stack Software Engineer (Platform)

WHOOP; Boston (MA); On-site; USD 110,000 - 160,000; Full time

Benefits offered by this job

Flexible vacation

Paid parental leave (18 weeks)

Stock options

WHOOP membership for you and a loved 1

Medical, dental, vision insurance

Wellness stipend

Sleep bonus program

Job summary

WHOOP is seeking a Software Engineer II (Full Stack Web) to join the Client Platform team in Boston. You will design and build shared frontend and backend systems to deliver consistent, high-quality experiences across web and mobile surfaces, and you will contribute to design systems and translation infrastructure.

You’ll work across the stack—from frontend component libraries to backend localization services—and collaborate with cross-functional teams to enable global expansion with accessible,

Qualifications

• 2–4 years of professional software engineering experience.
• Experience designing and building frontend and backend systems for web and mobile.
• Strong experience with internationalization workflows and localization pipelines.
• Familiarity with accessibility standards (WCAG) and inclusive design.
• Experience building and maintaining design systems and reusable UI components.

Responsibilities

• Design, build, and maintain full stack systems powering design systems and translation infrastructure.
• Develop and maintain reusable frontend components and shared libraries (React/TypeScript).
• Implement and improve i18n support, including RTL layouts and bidirectional text handling.
• Build backend services and APIs supporting translation workflows and localization pipelines.
• Ensure UI components are accessible, responsive, and adaptable to languages, regions, and devices.
• Improve and maintain build and CI/CD systems (CircleCI, GitHub Actions).
• Collaborate with Product, Design, Platform, and Localization teams to deliver scalable solutions.

Skills

Frontend development

Backend development

Localization / i18n

Design systems

Accessibility (WCAG)

Collaboration

RESTful APIs

BiDi text handling

CI/CD

React/TypeScript

Tools

React

TypeScript

Node.js

PostgreSQL

MySQL

CircleCI

GitHub Actions

Storybook

Figma

Cloudflare

Vercel

CloudFront

Job description

• 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
• You will play a key role in enabling global expansion by making it easy for teams to build localized, accessible, and visually consistent experiences
• 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

• Flexible Vacation: WHOOP has a flexible vacation policy that allows you to unwind, laptop-free, when you need it most.
• Focus on Family: We offer 18 weeks paid parental leave, plus an additional 2 weeks to gradually return to work.
• Get Invested: In addition to a competitive base salary and 401k, you’re eligible to receive stock options to share in the future of WHOOP.
• WHOOP +1: Everyone on the team gets a complimentary WHOOP membership—plus another membership to share with a loved one.
• Health Matters: Our competitive benefits package covers medical, dental, and vision, in addition to mental health services, life and disability insurance, and more.
• Find Your Fit: Full-time employees get $500 a year to spend on wellness in whatever way they see fit, from fitness classes and memberships, to recovery services.
• It Pays to Sleep: Our Sleep Performance Program incentivizes employees to get more sleep. Log an average sleep performance of 85% or higher for the month and get a $100 bonus.
• Location, Location, Location: You can’t beat the views from the rooftop of One Kenmore Square. Feel inspired daily as you work, enjoy free snacks and coffee, and collaborate in the heart of Boston.

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) supportExposure to design tokens, managing tokens for color modes and multiple themesBackend experience in languages like Java, Python, or C#Strong communication skills and ability to collaborate with technical and non-technical stakeholdersExposure to translation platforms or localization pipelinesExperience with accessibility standards (WCAG) and inclusive designFamiliarity with frontend architecture and building reusable UI components or design systemsExperience with relational databases such as PostgreSQL or MySQLExperience building and integrating RESTful APIsProficiency in web development using JavaScript/TypeScript, React, and Node.jsUnderstanding of internationalization (i18n) and localization best practicesExperience implementing RTL support using CSS logical properties and direction-based stylingFamiliarity with cloud delivery platforms (Cloudflare, Vercel, CloudFront)Familiarity with CSS, responsive design, and modern layout techniquesExperience with design system tooling (e.g., Storybook) or cross-platform component librariesExperience with design implementation, taking mockups in tools like Figma and making them realityExperience working with build systems and CI/CD tools (CircleCI, GitHub Actions)Familiarity with bidirectional (BiDi) text handling and localization edge cases2–4 years of professional software engineering experience