Senior Full-Stack Engineer

Build the Future of Wellbeing

Do Your Lifes Best Work

If modern wellbeing were redesigned from scratch it wouldnt live in a GPs office or a cluttered supplement aisle. It would be digital-first beautifully curated and powered by data that actually helps you feel your best.

Thats what were building at Healf. An ecommerce platform at the intersection of personalised health and curated wellbeing. We connect customers with the worlds most effective products across EAT MOVE MIND and SLEEP and were just getting started.

We combine culture-shaping storytelling cutting-edge health tech (like our new blood testing platform Healf Zone) and a best-in-class product experience to help people build rituals that work.

Backed by investors behind Soho House Alo Yoga Cult Beauty and Innocent were scaling fast and redefining how the world shops and lives well.

About Us

At Healf were not just a company were a movement. Founded by two brothers whose own wellbeing journeys inspired our mission to empower others Healf is built on grit determination and a shared understanding of the power of wellbeing.

Our culture is grounded in The Healf Standardfive principles that define how we work and win:

We Work Harder Than Anyone Else: Building something that improves lives takes long hours grit and sacrifice but we thrive on it. We all feel energised by what were building.

Never Settle: We challenge the status quo and push ourselves to be better every day. We never settle for mediocrity or the idea that something cant be done.

Obsession Over Talent: Talent alone isnt enoughrelentless curiosity and a drive to grow set us apart.

The Healf Lifestyle: We live what we preachour personal commitment to wellbeing fuels our professional productivity.

Stronger Together: Everyone owns their lane but we run as a unit.

With Healf Zone on the horizon were entering the next phase of our journey: closing the loop on health with personalised preventative care that unlocks longevity and optimised wellbeing. This is your chance to help build something thats not only extraordinary but a first of its kind.

The Role

Were looking for a senior full-stack engineer with a strong front-end focus to own the development of our personalisation product a healthtech platform set to revolutionise wellbeing.

Youll be part of a lean collaborative team where engineers have real ownership shaping both the customer experience and the technical direction. This is a role for someone who craves the pace and intensity of a high-growth startup shipping fast adapting constantly and thriving on impact.

Where Youll Make an Impact

Deliver pixel-perfect production-ready UI using React TypeScript and Tailwind CSS

Translate Figma designs into reusable accessible WCAG-compliant components and maintain a shared design system

Partner with AI engineers to build robust RAG / LLM-augmented pipelines

Implement modern data-fetching strategies (Server Actions App Router React Query/SWR) that balance SEO performance and scalability

Write and maintain automated tests (unit integration end-to-end) and strengthen our CI/CD pipelines

Work across the stack when needed (API routes server-side logic lightweight data modelling)

Collaborate closely with design product and backend teams to ship quickly and with care

Define and uphold engineering best practices around software testing code quality and CI/CD standards

Set technical direction and guide other engineers in the team through code reviews mentorship and pair programming

Establish scalable development workflows that promote reliability maintainability and collaboration across front-end and back-end teams

Partner with leadership and cross-functional teams to continuously improve engineering processes and delivery speed

What Youll Bring

Mindset & Approach

First-principles thinking: You strip problems down to fundamentals and design elegant scalable solutions

Systems mindset: You think in architectures spotting how pieces fit and scale

Relentless execution: You move fast and consistently ship high-quality code

Pace appetite: You dont just tolerate startup speed; you crave it and thrive on intensity

Product ownership: You care about the why as much as the what building experiences that transform personalised wellbeing

Collaboration & leadership: You work tightly with design product and AI while also guiding other engineers and setting technical direction when needed.

Technical Excellence

Front-end experience: 3 years building production React apps including 1 year with and headless commerce (Shopify preferred)

Technical fluency: Strong command of TypeScript modern React patterns (Hooks Suspense Server Components) and Tailwind CSS

Performance & UX focus: Proven track record of caring about user flows and how performance shapes them

Accessibility & inclusion: Experience with accessibility best practices and a genuine commitment to inclusive design

Engineering quality: Hands-on with Git and code reviews plus exposure to automated testing and CI/CD pipelines

Bonus Points If You Have

Experience with PostHog or other product analytics tools.

Deployment experience on Vercel or running Cloudflare Workers at the edge.

Familiarity with A/B testing frameworks and experimentation workflows.

Why Join Healf

Do your lifes best work: Build something that matters with a team that moves fast and aims high

Surround yourself with A talent: Youll work with high-performers who care deeply and raise the standard every day

Be a builder: This isnt a cog-in-the-machine role. Youll help shape our voice culture and growth

Wellbeing is the lifestyle: From office yoga to Healf Zone insights everything we do is rooted in our pillars: EAT MOVE MIND SLEEP

Premium Wellhub Membership: Unlimited entry to 1000s of gym yoga & fitness studios.

Exclusive Healf Perks: 50% off all Healf products plus discounted Healf Zone blood testing.

Nest Pension: Secure your future with our pension contributions.

Wellbeing-Focused Workspace: Incredible Hammersmith office with great natural lighting.

Team Connection: Annual company-wide retreat to recharge and bond.