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iOS Engineer I (Growth)

WHOOP

Salary not specified
Oct 14, 2025
Boston, MA, US
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WHOOP is seeking to drive user acquisition, activation, and retention through the development of high-leverage mobile experiences that directly impact business metrics and member growth.

Requirements

  • Professional experience developing iOS applications in Swift, with a strong grasp of modern frameworks and architecture patterns
  • Familiarity with experimentation and A/B testing concepts, and a data-informed approach to product iteration
  • Solid foundation in software engineering principles, including object-oriented programming and mobile architecture
  • Familiarity with Git and agile development workflows
  • Strong commitment to embracing and leveraging AI tools in day-to-day tasks, ensuring AI-assisted work aligns with the same high-quality standards as personal contributions

Responsibilities

  • Build and iterate on iOS experiences that support our Growth initiatives, from onboarding flows to retention-driving features
  • Collaborate cross-functionally with product, design, data science, and marketing to ship experiments and features that directly impact key business metrics
  • Support our A/B testing infrastructure by contributing to test setup, instrumentation, and analysis
  • Write clean, performant, and maintainable Swift code with a focus on speed to value and code quality
  • Participate in sprint planning, code reviews, and team discussions to improve engineering practices and product outcomes
  • Help debug issues and continuously improve the performance and stability of the WHOOP app

Other

  • Collaborative mindset and strong communication skills — you’re comfortable working in a highly cross-functional environment
  • Passion for solving problems that remove friction and drive real business impact
  • The successful candidate must be prepared to relocate if necessary to work out of the Boston, MA office
  • Ability to balance quality and speed, with a strong sense of ownership over delivered outcomes