Senior Software Engineer (Full Stack)
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