Backend Software Engineer (Platform)

Join WHOOP, a leading performance optimization company, as a Backend Software Engineer. In this role, you will design, develop, and maintain robust backend systems that power WHOOP's core infrastructure and member experience. You will collaborate with cross-functional teams, build and maintain APIs, ensure system reliability and performance, and implement secure coding practices. This is a full-time position with a competitive benefits package, including flexible vacation, paid parental leave, stock options, and a complimentary WHOOP membership.

• 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.

• While backend development expertise is the primary focus, familiarity with cybersecurity concepts (data privacy, AuthN/AuthZ, etc) or cloud infrastructure concepts (AWS, IaC, Kubernetes, etc) will be considered a strong plus
• Familiarity with cybersecurity principles (data privacy, authentication, and authorization) is a plus but not required
• Strong problem-solving skills and ability to work in a fast-paced environment
• Familiarity with database design and management (e.g., PostgreSQL, MySQL, or NoSQL databases)
• Exposure to event-driven architecture (messaging/streaming tech such as Kafka, RabbitMQ)
• Understanding of cloud infrastructure (AWS, GCP, or Azure)
• Good communication skills and ability to collaborate across teams
• 2-4 years of backend software development experience, ideally in languages like Java, Python, or C#
• Experience designing and building RESTful APIs and microservices
• You automate everything you can, always seeking to replace manual work with scalable tooling
• You enjoy working cross-functionally and can communicate complex infrastructure and security topics clearly
• You thrive on ownership and want to shape the foundation of WHOOP’s platform
• You believe reliability, security, and visibility are just as important as speed and scale
• Background in cloud security or incident response
• Familiarity with containers and orchestration (e.g., Docker, Kubernetes)
• Exposure to building translation or localization platforms to support multi-language content delivery
• Hands-on experience with observability tools (logging, monitoring, alerting) in production environments
• Experience working with infrastructure as code and developer enablement platforms