Demo

Senior Software Engineer (Backend, Core)

Whoop
Boston, MA Full Time
POSTED ON 8/2/2026
AVAILABLE BEFORE 8/31/2026
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. Our wearable technology monitors vital physiological metrics to offer personalized insights that enhance fitness, health, sleep, and recovery.

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.

Responsibilities
  • 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.


Qualifications
  • Demonstrated ability to lead complex technical initiatives, influence engineering direction, and mentor other engineers.
  • Deep expertise in backend development, including Java, API design, distributed systems, and relational databases such as Postgres.
  • Experience designing scalable, reliable, and observable systems using cloud-native and event-driven architectures such as Kafka or SQS.
  • Strong engineering judgment with experience balancing technical quality, business priorities, and long-term maintainability.
  • Experience writing well-tested, maintainable software and establishing engineering best practices through technical leadership.
  • Excellent collaboration and communication skills with technical and non-technical partners.
  • Enthusiasm in leveraging AI tools while maintaining high standards for quality and engineering excellence.
  • Bonus: Experience building shared platform capabilities or contributing across mobile and backend

Learn more about our Software Org and how to be successful in your engineering career at WHOOP via our Career Framework.

This role is based in the WHOOP office located in Boston, MA. The successful candidate must be prepared to relocate if necessary to work out of the Boston, MA office.

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.

WHOOP is an Equal Opportunity Employer and participates in E-verify to determine employment eligibility. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Salary : $150,000 - $215,000

If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Senior Software Engineer (Backend, Core)?

Sign up to receive alerts about other jobs on the Senior Software Engineer (Backend, Core) career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$123,167 - $152,295
Income Estimation: 
$146,673 - $180,130
Income Estimation: 
$123,167 - $152,295
Income Estimation: 
$146,673 - $180,130
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at Whoop

  • Whoop Boston, MA
  • At WHOOP, we’re on a mission to unlock human performance and healthspan. Our wearable technology provides personalized insights that help millions of membe... more
  • 1 Day Ago

  • Whoop Boston, MA
  • 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... more
  • 2 Days Ago

  • Whoop Boston, MA
  • 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... more
  • 2 Days Ago

  • Whoop Boston, MA
  • 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... more
  • 2 Days Ago


Not the job you're looking for? Here are some other Senior Software Engineer (Backend, Core) jobs in the Boston, MA area that may be a better fit.

  • BigTime Software, Inc. Boston, MA
  • We are seeking an experienced Senior Software Engineer to join our team. In this role, you will work across the full application stack to design, develop, ... more
  • 4 Days Ago

  • Eze Castle Software LLC Boston, MA
  • As a leading financial services and healthcare technology company based on revenue, SS&C is headquartered in Windsor, Connecticut, and has 27,000 employees... more
  • 3 Days Ago

AI Assistant is available now!

Feel free to start your new journey!