OverviewBuild the Future of Wellbeing. Do Your Life's Best Work. If modern wellbeing were redesigned from scratch, it wouldn't live in a GP's office or a cluttered supplement aisle. It would be digital-first, beautifully curated, and powered by data that actually helps you feel your best. That's what we're building at Healf. An ecommerce platform at the intersection of personalised health and curated wellbeing. We connect customers with the world's most effective products across EAT, MOVE, MIND, and SLEEP, and we're 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, we're scaling fast, and redefining how the world shops and lives well.About UsAt Healf, we're not just a company, we're 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 Standard-five 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 we're 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 can't be done.• Obsession Over Talent: Talent alone isn't enough-relentless curiosity and a drive to grow set us apart.• The Healf Lifestyle: We live what we preach-our 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, we're 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 that's not only extraordinary, but a first of its kind.The RoleWe're 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.You'll 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 You'll Make an ImpactDeliver pixel-perfect, production-ready UI using Next.js, React, TypeScript, and Tailwind CSSTranslate Figma designs into reusable, accessible, WCAG-compliant components and maintain a shared design systemPartner with AI engineers to build robust RAG / LLM-augmented pipelinesImplement modern data-fetching strategies (Server Actions, App Router, React Query/SWR) that balance SEO, performance, and scalabilityWrite and maintain automated tests (unit, integration, end-to-end) and strengthen our CI/CD pipelinesWork 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 careDefine and uphold engineering best practices around software testing, code quality, and CI/CD standardsSet technical direction and guide other engineers in the team through code reviews, mentorship, and pair programmingEstablish scalable development workflows that promote reliability, maintainability, and collaboration across front-end and back-end teamsPartner with leadership and cross-functional teams to continuously improve engineering processes and delivery speedWhat You'll BringMindset & ApproachFirst-principles thinking: You strip problems down to fundamentals and design elegant, scalable solutionsSystems mindset: You think in architectures, spotting how pieces fit and scaleRelentless execution: You move fast and consistently ship high-quality codePace appetite: You don\'t just tolerate startup speed; you crave it and thrive on intensityProduct ownership: You care about the "why" as much as the "what," building experiences that transform personalised wellbeingCollaboration & leadership: You work tightly with design, product, and AI, while also guiding other engineers and setting technical direction when needed.Technical ExcellenceFront-end experience: 3+ years building production React apps, including 1+ year with Next.js and headless commerce (Shopify preferred)Technical fluency: Strong command of TypeScript, modern React patterns (Hooks, Suspense, Server Components), and Tailwind CSSPerformance & UX focus: Proven track record of caring about user flows and how performance shapes themAccessibility & inclusion: Experience with accessibility best practices and a genuine commitment to inclusive designEngineering quality: Hands-on with Git and code reviews, plus exposure to automated testing and CI/CD pipelinesBonus Points If You HaveExperience 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 HealfDo your life's best work: Build something that matters, with a team that moves fast and aims highSurround yourself with A+ talent: You'll work with high-performers who care deeply and raise the standard every dayBe a builder: This isn't a cog-in-the-machine role. You'll help shape our voice, culture, and growthWellbeing is the lifestyle: From office yoga to Healf Zone insights, everything we do is rooted in our pillars: EAT MOVE MIND SLEEPPremium Wellhub Membership: Unlimited entry to 1000\'s 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.Team Personalisation Locations London Remote status Hybrid #J-18808-Ljbffr