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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Fullstack Engineer (Bristol) - **Company:** HealthHero - **Location:** Bristol, UK - **Experience:** Expert - **Salary:** £56,423.0 - **Contract:** Permanent contract - **Skills:** Contentful, JavaScript (Programming Language), .NET Framework, Unit Testing, C Sharp (Programming Language), Cascading Style Sheets (CSS), Code Review, Design of User Interfaces, Node.Js, OAuth, OpenID, Next.js, Session Management, Shopify, Software Engineering, Software Testing Automation Framework, TypeScript, Web Applications, Datadog, Network Routers, Tailwind, ReactJS, Cypress (Programming Language), Core Api, Backend, Gitlab, Stripe, Gitlab-ci, Git Flow, Material UI, Playwright, Front End Software Development, JestJS, Restful APIs - **Published:** August 1, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5822549442 ## About the Role We have an exciting opportunity for a Senior Fullstack Engineer to join our Product & Tech team on a full-time, permanent basis in Bristol. If you're a self-starter with a keen interest in software development and enjoy collaborating in a team setting, we want to hear from you., * 5+ years building production web applications, with deep expertise in React and TypeScript and substantial Next.js experience (App Router, server components and server actions ideally). * Genuinely fullstack: backend experience with .NET (C#) as well as Node/TypeScript - designing and consuming REST APIs, building backend-for-frontend layers, and working with authentication flows (OAuth/OIDC) and session management. * Experience with payments and subscriptions - Stripe or a comparable provider - including checkout, billing lifecycle and failure handling. * A strong testing habit: unit/component testing (Vitest or Jest + Testing Library) and end-to-end testing (Playwright or Cypress). * Modern CSS and component-driven UI development (Tailwind, Radix/shadcn or similar), with a real commitment to accessibility. * Fluency with CI/CD pipelines and collaborative Git workflows (we use GitLab), and monorepo tooling (pnpm workspaces, Turborepo). Desirable Skills (nice-to-haves): * Headless commerce (Medusa, commercetools, Shopify) or headless CMS (Sanity, Contentful) experience. * Internationalisation and multi-tenant / white-label product experience. * Observability tooling (Datadog, OpenTelemetry) and feature-flag-driven delivery (Unleash, LaunchDarkly). * Experience in healthtech or another regulated domain, or building direct-to-consumer e-commerce journeys. ## Description You'll be a senior engineer on our B2C team, building HealthHero's direct-to-consumer digital clinic, where patients access adult ADHD assessment, diagnosis and ongoing treatment, and a clinician-led weight-management service with medication delivered to their door. You'll own features end-to-end: from accessible, beautifully-crafted React user journeys through to the server-side integrations that connect commerce, payments, clinical systems and pharmacy fulfilment. Your work directly shapes how thousands of patients experience life-changing care, from the very first click. Day to day, your responsibilities will include but not be limited to: * Build patient-facing features end-to-end across our Next.js frontend and server-side BFF layer - onboarding and eligibility journeys, subscription checkout, condition management, medication reordering and patient records * Own integrations with the services behind the app: Medusa commerce, Stripe subscription billing, HealthHero's clinical platform APIs, our questionnaire/triage engine, pharmacy services and Sanity CMS * Lead the technical design of new services and markets - the platform is multi-tenant and white-label (UK, Ireland, Germany and retail partners), with feature-flagged rollouts and full internationalisation * Craft accessible, responsive UI in our shared component library (Radix primitives + Tailwind), keeping quality and consistency high across every patient touchpoint * Champion engineering quality - unit and component tests with Vitest, end-to-end and accessibility tests with Playwright, thoughtful code review and green pipelines in GitLab CI * Improve reliability, performance and conversion - using Datadog RUM, OpenTelemetry tracing and analytics to find and fix what matters most to patients and the business * Mentor other engineers and raise the bar through pairing, review and knowledge sharing * Collaborate closely with product, design and clinical colleagues to turn regulated healthcare requirements into simple, humane user experiences ## Related Videos - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [WeAreDevelopers LIVE - Modern DevOps for IoT Devices and More](https://www.wearedevelopers.com/videos/1805-wearedevelopers-live-modern-devops-for-iot-devices-and-more) - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) - [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Enabling automated 1-click customer deployments with built-in quality and security](https://www.wearedevelopers.com/videos/83-enabling-automated-1-click-customer-deployments-with-built-in-quality-and-security) ## Related Articles - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [The Biggest German Tech Companies](https://www.wearedevelopers.com/magazine/424-the-biggest-german-tech-companies)