Senior Full-stack Developer

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 fastand redefining how the world shops and lives well.

The Role

Were on the lookout for a front-end-focused Full-Stack Engineer whos passionate about crafting fast beautiful and high-performing web experiences. Youll take the lead on building our headless Shopify storefront using React and Tailwind working closely with design product and backend teams to bring ideas to life. From implementing SEO-optimised data-fetching strategies to shaping our component library and performance tuning for Core Web Vitals youll play a key role in delivering polished production-grade interfaces that scale.

Key Responsibilities

Ship pixel-perfect production-ready UI for a headless Shopify storefront built with TypeScript and Tailwind CSS.

Consume and extend Shopify Storefront / Admin GraphQL APIs and integrate third-party services (e.g. analytics).

Translate Figma designs into reusable accessible components.

Optimise for Core Web Vitals through bundle-splitting edge caching and Lighthouse-driven performance budgets.

Write and maintain unit integration and end-to-end tests using Jest React Testing Library and Playwright.

Collaborate with the product team to plan the roadmap particularly around performance stability and technical improvements.

Refactor and improve the existing codebase to reduce bugs and technical debt ensuring it remains clean maintainable and well-documented.

Work cross-functionally with other teams (e.g. logistics) to build internal tooling and back-office solutions such as automated workflows for order processing.

Qualifications

7 years of experience building production-ready React frontends including 3 years working with and headless CMS or eCommerce platforms (e.g. Shopify Sanity Contentful). Bonus points for experience with Shopify Storefront and Admin GraphQL APIs and for having shipped production-grade eCommerce systems or marketplaces. Domain knowledge of retail or eCommerce is a strong plus.

Comfortable solving complex problems and delivering well-structured scalable and maintainable solutions.

Strong proficiency in TypeScript including advanced features such as generics utility types and building type-safe APIs.

Deep understanding of modern React patterns including hooks Suspense and Server Components. You will know how to separate concerns decouple form from function and architect modular extensible components using context hooks and other compositional tools.

Solid experience with GraphQL including writing and optimizing queries mutations fragments and pagination as well as using client-side tools like TanStack Query.

A keen eye for design and UX you care deeply about crafting interfaces that are not only performant and accessible but also beautiful and intuitive.

Exposure to backend development (bonus if youve worked with or serverless functions). You should be confident in structuring well-organized maintainable code using classes abstraction dependency injection and clean architectural patterns where appropriate.

Excellent communication and collaboration skills youre confident working cross-functionally with product managers designers engineers and other stakeholders especially in fast-paced and ambiguous environments. You can break down complex problems articulate trade-offs and execute well-reasoned solutions.

Experience mentoring or leading more junior developers including reviewing PRs writing best-practice guides and selecting the right tooling to improve developer experience and velocity.

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

Benefits (UK)

Key Skills

APIs,REST,Spring,SOAP,.NET,React,Node.js,Angular,J2EE,JavaScript,Web Services,Java

Employment Type : Full Time

Experience : years

Vacancy : 1