Frontend Engineer – Web, React, Next.js

Job Description:

• 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

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.

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