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Software Engineer II (Backend, Core App)

Whoop

Salary not specified
Aug 28, 2025
Boston, MA, US
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WHOOP aims to unlock human performance and healthspan by providing users with a deeper understanding of their bodies and daily lives through a wearable device that monitors physiological metrics. The Core App team is responsible for developing features that empower members to optimize performance and longevity, shaping the foundational experience of the WHOOP mobile app.

Requirements

  • You build and maintain APIs and are comfortable working with relational databases like Postgres. RESTful services are familiar territory for you.
  • You have worked with or on event-driven or asynchronous systems like Kafka or SQS, or you’re curious and ready to learn more.
  • You write code that holds up over time with solid test coverage, clear documentation and an eye toward making it easy for others to understand.

Responsibilities

  • Develop features that empower members to optimize performance and longevity.
  • Contribute to development of backend services using Java, Kafka, Postgres and other AWS offerings.
  • Participate in code reviews, testing, and documentation to ensure software quality.
  • Continuously improve the reliability, performance, and scalability of systems requiring high availability and stability.
  • Work on a cross-functional team throughout feature ideation, planning, and development.
  • Translate feature requirements into engineering tasks, identify risks and tradeoffs, and ship iteratively to mitigate risk.

Other

  • Work on a cross-functional team throughout feature ideation, planning, and development.
  • You are a team player who thrives on continuous learning and direct feedback.
  • You are comfortable adapting and iterating in a dynamic, evolving environment.
  • You are energized by significant challenges and take a data-informed, iterative approach to solving them.
  • 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.