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Whoop Logo Whoop · IT - Software Development

Software Engineer II

United States, Boston 125000.00 - 170000.00 USD / Year · Job Posted December 13, 2025
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Job Description

At WHOOP, we're on a mission to unlock human performance and healthspan. WHOOP empowers members to perform at a higher level and live longer through a deeper understanding of their bodies and daily lives. Protecting our members’ data and ensuring our systems scale securely and reliably is core to this mission. WHOOP is hiring a Software Engineer II focused on backend development to build and enhance systems that power our platform. This role will directly contribute to delivering scalable and secure services that support millions of members worldwide. 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. This is a top-funnel role: depending on your background and interests, you may align more closely with our Product Security team (focused on secure-by-default guardrails, compliance, and data privacy) or our Application Infrastructure team (focused on scalability, reliability, and developer enablement). Either way, you’ll have the opportunity to shape core platform practices and help WHOOP grow to the next level.

Job Responsibility

  • 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

Requirements

  • 2-4 years of backend software development experience, ideally in languages like Java, Python, or C#
  • 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)
  • Strong problem-solving skills and ability to work in a fast-paced environment
  • Good communication skills and ability to collaborate across teams

Nice to have

  • Familiarity with cybersecurity principles (data privacy, authentication, and authorization)
  • Experience working with infrastructure as code and developer enablement platforms
  • Familiarity with containers and orchestration (e.g., Docker, Kubernetes)
  • Background in cloud security or incident response
  • 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

What we offer

Equity package

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