Senior Software Engineer (Frontend, Growth)

Own the architecture and technical direction of WHOOP's web experiences, including our Next.js-based join flow, Cloudflare Workers edge infrastructure, and Stripe-powered checkout

Lead cross-functional projects end-to-end from brainstorm and technical planning through implementation, QA, rollout, and post-launch analysis, partnering closely with Product, Design, and Analytics

Design and execute experiments (A/B tests) with rigor, ensuring proper instrumentation, measurement, and iteration based on impact to North Star metrics

Drive frontend performance, accessibility, and reliability across devices and browsers, establishing standards and monitoring that the team can build on

Write clean, well-tested, production-quality code in TypeScript/React/Next.js and integrate deeply with backend services, payment systems (Stripe), and ecommerce platforms (CommerceTools)

Author and review technical plans, identify architectural tradeoffs, and make sound judgment calls that balance speed with long-term maintainability

Mentor and develop other engineers through code review, pairing, and technical guidance, raising the bar for quality and velocity across the web surface

Participate in on-call rotations and incident response; lead postmortems and drive improvements that prevent recurrence

Contribute to Growth's engineering culture through documentation, process improvements, and knowledge sharing