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Software Engineer II (Backend, Platform)

Whoop

Salary not specified
Oct 2, 2025
Boston, MA, US
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WHOOP is looking to hire a Software Engineer II focused on backend development to build and enhance systems that power their platform, ensuring scalability and security for millions of members worldwide.

Requirements

  • 2-4 years of backend software development experience, ideally in languages like Java, Python, or C-Sharp.
  • Experience designing and building RESTful APIs and microservices.
  • Exposure to event-driven architecture (messaging/streaming tech such as Kafka, RabbitMQ).
  • Familiarity with database design and management (e.g., PostgreSQL, MySQL, or NoSQL databases).
  • Understanding of cloud infrastructure (AWS, GCP, or Azure).
  • Familiarity with cybersecurity principles (data privacy, authentication, and authorization) is a plus but not required.
  • Experience working with infrastructure as code and developer enablement platforms.
  • Familiarity with containers and orchestration (e.g., Docker, Kubernetes).

Responsibilities

  • Design, develop, and maintain robust, scalable backend systems that power WHOOP’s core infrastructure and member experience.
  • Collaborate with product managers, data engineers, frontend developers, and other cross-functional partners to deliver features that enhance member engagement.
  • Build and maintain APIs to enable seamless integration with frontend applications and third-party services.
  • Ensure system reliability, scalability, and performance through effective testing, monitoring, and optimization.
  • Implement secure coding practices and contribute to designing systems that safeguard member data.
  • Stay current with backend technologies and contribute to improving team engineering standards and best practices.

Other

  • 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.
  • Strong problem-solving skills and ability to work in a fast-paced environment.
  • Good communication skills and ability to collaborate across teams.
  • You thrive on ownership and want to shape the foundation of WHOOP’s platform.
  • You automate everything you can, always seeking to replace manual work with scalable tooling.