Software Engineer I (Backend)

Whoop•Boston, MA

5d•$105,000 - $145,000•Onsite

About The Position

At WHOOP, weâre 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 provide personalized insights that improve fitness, health, and recovery. As a Software Engineer I, you will contribute to the design, development, and maintenance of the services that power WHOOPâs core product experiences. You will work closely with experienced engineers, product managers, designers, and data scientists to build scalable, reliable systems that deliver meaningful insights to our members. This is a growth-oriented role ideal for engineers who are excited to learn, ship high-quality code, and make an impact in a fast-paced, mission-driven environment.

Requirements

Professional experience in backend software development (internship, co-op, or academic project experience acceptable).
Experience building or interacting with RESTful APIs and relational databases (e.g., Postgres or similar SQL-based systems).
Proficiency in an object-oriented programming language such as Java, or demonstrated ability to quickly learn new backend technologies.
Familiarity with version control systems such as Git and standard development workflows.
Understanding of fundamental computer science concepts including data structures, algorithms, and system design basics.
Interest in distributed systems, event-driven architectures (e.g., Kafka or similar technologies), and cloud platforms such as AWS.
Strong problem-solving skills and a growth mindset, with a willingness to seek feedback and continuously improve.
Effective communication skills and the ability to collaborate within a cross-functional team environment.

Responsibilities

Contribute to the development and maintenance of backend services and APIs that power WHOOPâs member-facing features using technologies such as Java, Kafka, Postgres, and AWS.
Collaborate with cross-functional partners across Product, Design, Data Science, and Engineering to translate requirements into well-scoped technical solutions.
Write clean, maintainable, and well-tested code while participating in code reviews to continuously improve engineering quality and standards.
Support the operation and monitoring of production systems, helping to troubleshoot issues and ensure reliability, scalability, and performance.
Break down feature requirements into actionable tasks, identify risks early, and iterate quickly to deliver value to members.
Contribute to technical documentation and knowledge sharing to support team velocity and long-term maintainability.