Software Engineer (Backend, Core)

WHOOP; Boston (MA); On-site; USD 130,000 - 190,000; Full time

Benefits offered by this job

Flexible vacation

Parental leave

Stock options

WHOOP membership

Medical/dental/vision

Wellness stipend

Sleep bonus

On-site rooftop view

Job summary

WHOOP in Boston is seeking a Software Engineer II on the Core team to build foundational backend services powering the WHOOP App and member experiences across fitness, sleep, strain and recovery.

You will collaborate with engineers, product, design and data science to translate product needs into scalable, reliable systems, improve observability, and deliver production-quality software that supports an industry-leading wellness platform.

Qualifications

• Experience working with cloud platforms and asynchronous systems such as Kafka or SQS.
• Designing, testing, and maintaining reliable, scalable backend services.
• Demonstrated ability to deliver production-quality software independently while collaborating with cross-functional partners.

Responsibilities

• Own design, implementation, and delivery of backend services powering member experiences.
• Collaborate with engineers, product, design, and data science to shape and build user-facing features.
• Improve reliability, performance, and observability through testing and monitoring.
• Translate product requirements into actionable engineering work and manage risks.

Skills

Java

RESTful APIs

PostgreSQL

Kafka

Distributed systems

Observability

Performance optimization

Cloud platforms

Asynchronous systems

Collaboration

Job description

• As a Software Engineer II on the Core team, you will build the foundational services 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
• Own the design, implementation, and delivery of backend services that power member-facing experiences, collaborating with cross-functional partners to deliver scalable, reliable solutions
• Contribute to technical planning by translating product requirements into actionable engineering work, identifying risks and dependencies, and delivering iteratively
• Improve system reliability, performance, and observability through testing, monitoring, and continuous refinement
• Contribute to shared engineering foundations through code reviews, documentation, and technical discussions that improve team effectiveness
• Support other engineers through collaboration, knowledge sharing, and constructive feedback

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.

Experience working with cloud platforms and asynchronous systems such as Kafka or SQSGrowth mindset with a desire to learn, iterate, and continuously improveExperience designing, testing, and maintaining reliable, scalable backend servicesDemonstrated ability to independently deliver production-quality software while collaborating effectively across engineering, product, and designEnthusiasm in leveraging AI tools while maintaining high standards for quality and engineering excellenceStrong collaboration and communication skills with cross-functional partnersBonus: Experience contributing to mobile applications or shared platform servicesStrong proficiency with backend development, including Java, RESTful APIs, and relational databases such as PostgresUnderstanding of distributed systems, observability, and performance optimization