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Senior Software Engineer (Full Stack)

WHOOP

WHOOP

Software Engineering
Boston, MA, USA
Posted on Jul 17, 2025
At WHOOP, we're on a mission to unlock human performance and healthspan. WHOOP empowers members to perform at a higher level through a deeper understanding of their bodies and daily lives.
We are looking for a Senior Software Engineer (Full Stack) to join our growing team. In this role, you'll architect and build end-to-end features that improve the experience for hundreds of thousands of members worldwide. You'll collaborate closely with product managers, designers, and engineers to shape high-impact projects across both frontend and backend systems.
As a Senior Software Engineer, you’ll help deliver features that directly impact our e-commerce initiatives. You’ll collaborate closely with cross-functional teammates to build, measure, and rapidly iterate on projects that drive business metrics and member growth.

RESPONSIBILITIES:

  • Design, develop, and maintain scalable and performant features across our web and backend infrastructure using technologies such as React, Java, Postgres, and AWS
  • Partner cross-functionally to define product requirements and translate them into technical solutions
  • Develop reusable and modular components to support rapid product iteration and experimentation
  • Implement observability and monitoring tools to ensure high availability and system reliability
  • Work collaboratively in a high growth environment with a product minded approach
  • Lead by example through technical mentorship, code reviews, and best practices in software development

QUALIFICATIONS:

  • 4+ years of professional experience working on large scale software systems
  • Expertise developing web applications using frameworks like React
  • Experience in API design and development (Java preferred)
  • Experience in relational database design and development (SQL)
  • Strong skills translating design specifications into fully functional applications
  • Experience developing large scale, production-quality web applications
  • Thrives with autonomy, with a positive attitude and ownership mentality
  • Strong problem-solving skills and a pragmatic, data-informed approach to technical decisions
  • Passion for fitness, wellness, and helping others improve their health through technology