Senior Software Engineer (Backend, Core)

• As a Senior Software Engineer on the Core team, you will build the foundations that power the WHOOP App and develop features that empower members to optimize performance and longevity
• You will play a critical role in building and scaling the foundational systems that power the WHOOP member experience for fitness, sleep, strain, recovery, and integrations
• You will partner closely with other engineers, product management, design, data science, and performance science to shape and build the polished member-facing experiences for these features
• Lead the design and implementation of foundational backend capabilities that improve scalability, reliability, and developer productivity
• Drive technical planning for complex initiatives by defining scope, sequencing work, identifying risks, and communicating technical tradeoffs
• Deliver high-impact platform capabilities while balancing technical quality, business priorities, and data-informed engineering decisions
• Establish and evolve backend engineering standards through architecture discussions, code reviews, documentation, and technical leadership
• Mentor engineers and help grow the team’s technical capabilities through coaching, feedback, and knowledge sharing

Benefits

• Flexible Vacation: WHOOP has a flexible vacation policy that allows you to unwind, laptop-free, when you need it most.
• Focus on Family: We offer 18 weeks paid parental leave, plus an additional 2 weeks to gradually return to work.
• Get Invested: In addition to a competitive base salary and 401k, you’re eligible to receive stock options to share in the future of WHOOP.
• WHOOP +1: Everyone on the team gets a complimentary WHOOP membership—plus another membership to share with a loved one.
• Health Matters: Our competitive benefits package covers medical, dental, and vision, in addition to mental health services, life and disability insurance, and more.
• Find Your Fit: Full-time employees get $500 a year to spend on wellness in whatever way they see fit, from fitness classes and memberships, to recovery services.
• It Pays to Sleep: Our Sleep Performance Program incentivizes employees to get more sleep. Log an average sleep performance of 85% or higher for the month and get a $100 bonus.
• Location, Location, Location: You can’t beat the views from the rooftop of One Kenmore Square. Feel inspired daily as you work, enjoy free snacks and coffee, and collaborate in the heart of Boston.- Deep expertise in backend development, including Java, API design, distributed systems, and relational databases such as Postgres
• Bonus: Experience building shared platform capabilities or contributing across mobile and backend
• Strong engineering judgment with experience balancing technical quality, business priorities, and long-term maintainability
• Excellent collaboration and communication skills with technical and non-technical partners
• Demonstrated ability to lead complex technical initiatives, influence engineering direction, and mentor other engineers
• Experience writing well-tested, maintainable software and establishing engineering best practices through technical leadership
• Experience designing scalable, reliable, and observable systems using cloud-native and event-driven architectures such as Kafka or SQS
• Enthusiasm in leveraging AI tools while maintaining high standards for quality and engineering excellence
• Interested in the role, but don’t meet every qualification? We encourage you to still apply! At WHOOP, we believe there is much more to a candidate than what is written on paper, and we value character as much as experience. As we continue to build a diverse and inclusive environment, we encourage anyone who is interested in this role to apply