Build and maintain a production-grade Next.js (App Router) application
Implement responsive, accessible UI using Tamagui shared across web and mobile
Manage client-side data fetching and caching with TanStack Query
Integrate Stripe payments using Stripe.js and react-stripe-js
Consume REST APIs and custom authentication hooks backed by Firebase
Implement analytics (PostHog) and error tracking (Sentry)
Write and maintain high-quality tests using Vitest, React Testing Library, and Playwright
Ensure accessibility compliance using tooling such as eslint-plugin-jsx-a11y and axe-core
Collaborate with design and product to translate complex health concepts into clear UX
Requirements
4+ years of professional frontend development experience
Strong experience with React and Next.js in production environments
Solid understanding of web accessibility, performance, and SEO fundamentals
Experience integrating third-party APIs and payment systems
Familiarity with modern frontend testing practices
Strong familiarity with web application security concerns
Tech Stack
Firebase
JavaScript
Next.js
React
Benefits
100% employer-paid medical, vision, and dental insurance (multiple plans available).
100% employer-paid life insurance, short-term, and long-term disability insurance.
Employer-sponsored HSA contributions for HDHP medical plans
Additional HSA and FSA spending account plans for employees
401(k) with a 5% company match.
Generous PTO and holiday schedule.
Company-issued technology and work-from-home stipend.
A chance to shape a product, and a company, from the ground up.
The opportunity to work at the forefront of health and longevity science with a team of world-class professionals dedicated to precision, mastery, and excellence.