Software Engineer I (Frontend, Growth)

WHOOP

Boston, US

On-site

Who this role is best for

Best suited to mid-level frontend engineers with React experience who thrive in experiment-driven growth teams and can work onsite in Boston.

Best fit for

Engineers who enjoy rapid iteration based on measurable results
— “iterate quickly based on measurable results”
Collaborative developers comfortable working with product and design teams
— “work closely with experienced engineers, product managers, and designers”
Candidates eager to impact key business metrics through web experiences
— “building and optimizing user-facing web experiences that directly impact key business”

Things to consider

Must be prepared to relocate or commute to Boston office
— “prepared to relocate if necessary to work out of the Boston”
Equity compensation forms a significant part of total package
— “equity serving as a key differentiator”

How to stand out

Demonstrate specific examples of A/B testing implementations
— “Experience with A/B testing frameworks”
Show clean code samples with React and TypeScript
— “Write clean, maintainable, and well-tested code using modern JavaScript frameworks”
Highlight cross-functional collaboration in past projects
— “collaborative mindset when working with cross-functional partners”

Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · TeamLevel · Mid Level

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

Contribute to high-quality frontend applications
Participate in code reviews
Improve application performance

Typical background

Professional experience in frontend software development

Skills & requirements

Required

JavaScriptReactHTMLCSSRestful ApisGitProblem-solvingCommunication

Preferred

A/B TestingGrowth-focused Engineering

Stack & domain

JavaScriptTypeScriptReactHTMLCSSRestful ApisGitProblem-solvingCommunicationCollaborationWeb DevelopmentGrowthUser Experience

About the role

Original posting from WHOOP via Ashby

RESPONSIBILITIES:
● Contribute to the development and maintenance of responsive, high-quality frontend applications that power WHOOP’s web experiences
● Partner with Product, Design, and Analytics to implement experiments (A/B tests) and iterate quickly based on measurable results
● Write clean, maintainable, and well-tested code using modern JavaScript frameworks (e.g., React) and industry best practices
● Integrate frontend applications with RESTful APIs and backend services to deliver seamless, performant user experiences
● Break down feature requirements into actionable tasks, identify risks early, and iterate quickly to deliver value to members
● Monitor and improve application performance, accessibility, and usability across devices and browsers
● Participate in code reviews and technical discussions, proactively seeking feedback and continuously improving your craft
QUALIFICATIONS:
● Professional experience in frontend software development (internship, co-op, or academic project experience acceptable)
● Experience building web applications using modern JavaScript/TypeScript and frameworks such as React
● Understanding of core web technologies including HTML, CSS, and responsive design principles
● Familiarity with integrating frontend applications with RESTful APIs
● Experience using version control systems such as Git
● Strong problem-solving skills and an eagerness to learn in a fast-paced, experiment-driven environment
● Clear communication skills and a collaborative mindset when working with cross-functional partners
● Bonus: Experience with A/B testing frameworks or growth-focused engineering initiatives

Source: WHOOP careers (Ashby)