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Senior Software Engineer (Backend, Growth)

Whoop - Boston, MA

Posted Jan 9, 2026

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About this role

Senior Software Engineer (Backend, Growth) Boston, MA RESPONSIBILITIES: - Design and build scalable and reliable backend services to support growth experiments, e-commerce flows, and member engagement initiatives. - Collaborate closely with Product, Design, and cross-functional Engineering teams to define and deliver impactful features. - Maintain and optimize APIs and infrastructure using Java, Kafka, Postgres, and AWS technologies. - Take ownership of end-to-end development, from breaking down requirements to implementation, testing, deployment, and monitoring. - Mentor junior engineers and contribute to the growth of engineering best practices across the team. QUALIFICATIONS: - Professional experience developing large-scale backend systems in a production environment. - Deep proficiency in building and maintaining RESTful APIs and working with relational databases (e.g., Postgres). - Experience with event-driven architectures and tools like Kafka or SQS. - Strong testing practices and clear documentation habits. - Ability to thrive in a fast-paced, iterative environment focused on growth and experimentation. - Proven collaboration skills across engineering, product, and data teams. - A growth mindset and excitement for tackling ambiguous challenges. - Bonus: Experience building A/B testing infrastructure or growth-focused engineering features. 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

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