Senior Software Engineer (Backend, Connectivity)

Whoop
Boston, MA

At WHOOP, we're on a mission to unlock human performance. WHOOP empowers members to perform at a higher level through a deeper understanding of their bodies and daily lives. We are looking for motivated engineers to join our team on our mission.

The Connectivity team’s mission is to enable a 24/7 connection and interaction between the WHOOP wearable sensor, mobile apps, and the Cloud backend. The team collaborates closely with the Firmware, Software, and Data Science teams in order to provide seamless, quick, and performant communication to and from the hardware. 

As a Senior Software Engineer on the Connectivity team, you will be responsible for the primary pipeline for sensor data uploaded from the mobile apps, including API definition, parsing, persistence, and dispatching for Cloud processing by data science and AI components. 

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RESPONSIBILITIES:
  • Design, build, release, and operate Cloud services that ingest, store, and dispatch large amounts of data on the critical path between sensor and insights
  • Migrate and improve systems for scale and complexity
  • Leverage your experience with technologies including Java, Kafka, Postgres, S3, Redis, and Cassandra
  • Participate in team estimation and milestone definition for project deliverables.
  • Become a relied-upon expert in the Connectivity backend software domain. 
  • Participate in project design reviews, seeking and providing feedback on your own and others’ designs
  • Represent the perspective and needs of the Connectivity team in cross-functional guilds at WHOOP.

QUALIFICATIONS:
  • 5+ years’ experience developing and maintaining scalable, cloud-native software solutions
  • 2+ years of experience Java development with microservices
  • Demonstrated experience identifying, diagnosing, and mitigating performance bottlenecks
  • Experience designing interconnected services for scalability. 
  • Experience designing RESTful APIs and implementing them in Java
  • Great collaborator and partner to other teams, balancing the needs of multiple technical stakeholders
  • Strong sense of ownership of your technical products – “you build it, you own it.”

WE WOULD LOVE TO SEE:
  • Extensive experience with AWS
  • Experience with ElasticSearch / OpenSearch
  • Experience with large data sets
  • Hands-on experience working with DevOps and agile-driven product teams

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Find out more about us: "WHOOP Software Principles"

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.

Posted 2026-01-07

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