Software Engineer II (Full Stack, Growth)

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. The Growth team is responsible for accelerating member acquisition, activation, engagement, and retention through rapid experimentation and thoughtful product development. As a Software Engineer II (Full Stack), you will build and maintain the experiences and services that power WHOOP’s growth initiatives, working across the frontend and backend to deliver high-impact features that directly influence member and business outcomes. You’ll collaborate closely with Product, Design, and fellow engineers in a fast-paced, experiment-driven environment where iteration, measurement, and continuous improvement are core to how we build. RESPONSIBILITIES - Work within a cross-functional team of product managers, designers, and fellow engineers to design, build, and ship full stack features that improve member acquisition, onboarding, engagement, and retention. - Develop and maintain frontend applications using modern web technologies - Build, maintain, and optimize APIs and infrastructure supporting our acquisition funnels, e-commerce experiences, and membership growth experiments. - Break down feature requirements into actionable tasks, prioritize work, and consistently deliver on sprint commitments. - Monitor application performance, troubleshoot production issues, and continuously improve the reliability, quality, and maintainability of the platform. - Participate in code reviews and collaborate on best practices with your engineering peers QUALIFICATIONS - 2–4 years of professional software engineering experience building production web applications. - Proficiency in web development using JavaScript/TypeScript, and React - Experience designing and integrating RESTful APIs - Experience with relational databases such as PostgreSQL - Strong problem-solving skills with a passion for building high-quality, user-focused products in an iterative, data-driven environment. - Excellent communication and collaboration skills, with the ability to work effectively across engineering, product, and design teams. - A growth mindset and eagerness to learn from feedback and new challenges. Learn more about our Software Org and how to be successful in your engineering career at WHOOP via our Career Framework https://engineering.prod.whoop.com/careerframework.   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 https://www.e-verify.gov/ 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 - $175,000. 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.