At WHOOP, we're on a mission to unlock human performance and healthspan. WHOOP empowers members to perform at a higher level through a deeper understanding of their bodies and daily lives. WHOOP is hiring an iOS Engineer II to join one of our high-impact product teams: AI Experiences or Growth. You’ll work on features that scale our systems and improve reliability, remove friction from user experiences, or help members improve their physical, emotional, and hormonal health through clinical-grade insights. Whether building shared frameworks, iterating on growth experiments, or shipping health-driven features, you'll deliver work that directly impacts our members' lives. You’ll collaborate across functions, write well-architected code, and contribute to a platform that is improving health outcomes and unlocking human potential at scale. RESPONSIBILITIES:

Design, build, and maintain scalable Android features that integrate with WHOOP’s backend services and APIs

Collaborate with backend, infrastructure, and product teams to ensure seamless and performant end-to-end systems

Apply modern Android architecture patterns (e.g., MVVM, MVI) and modular design principles to support team scalability

Improve developer enablement by enhancing shared Android libraries, frameworks, and build tooling

Monitor app performance, debug complex issues, and optimize for speed, stability, and battery life

Write secure, well-tested code and participate in design and code reviews to maintain engineering excellence

Document technical decisions, architecture, and design to promote alignment and knowledge sharing

QUALIFICATIONS:

2–4 years of professional Android development experience

Proficiency in Kotlin (and Java when necessary), Android Jetpack libraries, and the Android development ecosystem

Strong understanding of Android app structure, lifecycle, concurrency (Coroutines), and memory management

Experience integrating with RESTful APIs and backend services

Familiarity with modular architecture and scalable design systems (MVVM, MVI)

Experience using Git and productivity tools like Jira, Confluence, and GitHub

Exposure to mobile CI/CD workflows, Gradle build configuration, and mobile release processes

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

Learn more about our Software Org and how to be successful in your engineering career at WHOOP via our Career Framework. This role is based in the WHOOP office located in Boston, MA. The successful candidate must be prepared to relocate if necessary to work out of the Boston, MA office. Interested in the role, but don’t meet every qualification? We encourage you to still apply! At WHOOP, we believe there is much more to a candidate than what is written on paper, and we value character as much as experience. As we continue to build a diverse and inclusive environment, we encourage anyone who is interested in this role to apply. WHOOP is an Equal Opportunity Employer and participates in E-verify to determine employment eligibility. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability. The WHOOP compensation philosophy is designed to attract, motivate, and retain exceptional talent by offering competitive base salaries, meaningful equity, and consistent pay practices that reflect our mission and core values. At WHOOP, we view total compensation as the combination of base salary, equity, and benefits, with equity serving as a key differentiator that aligns our employees with the long-term success of the company and allows every member of our corporate team to own part of WHOOP and share in the company’s long-term growth and success. The U.S. base salary range for this full-time position is $125,000-$170,000. Salary ranges are determined by role, level, and location. Within each range, individual pay is based on factors such as job-related skills, experience, performance, and relevant education or training. In addition to the base salary, the successful candidate will also receive benefits and a generous equity package. These ranges may be modified in the future to reflect evolving market conditions and organizational needs. While most offers will typically fall toward the starting point of the range, total compensation will depend on the candidate’s specific qualifications, expertise, and alignment with the role’s requirements. Learn more about WHOOP.

iOS Engineer II (Growth & AI Experiences)