Senior Fullstack Engineer, HealthHero

• 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

• 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
• 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