Staff React Full Stack Engineer in Harrow

Reapit is the original end-to-end business technology provider for estate agencies of all sizes. We’ve been helping sales and lettings agents build relationships and grow their businesses for more than 25 years. Our technology empowers property professionals across Europe, the Middle East, Australia, and New Zealand to work with buyers, sellers, tenants, and landlords to deliver a dream home experience. Worldwide, over 100,000 agents across more than 15,000 branches use Reapit to run their businesses, manage properties, collect rent, engage clients, and provide outstanding customer service every time.

What You’ll Be Doing

• Reporting to the Director of Engineering, you’ll operate as a highly senior technically hands-on engineer, embedded into a squad and frequently working Forward Deployed – direct with clients to understand, shape and ship solutions to their workflows.
• You’ll be expected to own outcomes end-to-end across the stack.
• Architecting, building and shipping complex, high-performance Full Stack TypeScript applications across React front-ends and with some BFF Node back-end work, setting the technical bar for the squad and owning delivery of substantive feature sets end-to-end.
• Operating as a Forward Deployed Engineer – sitting shoulder-to-shoulder with clients to elicit requirements, shape solutions, prototype in the room and translate messy real-world workflows into production-grade software.
• Owning each feature’s solution end-to-end – partnering with Business Analysts who capture high-level problems and workflows, then driving product thinking, scoping, trade-offs and delivery yourself.
• Leveraging Claude Code and advanced agentic workflows at pace – orchestrating sub-agents, managing context, running parallel workstreams and embedding AI-native engineering patterns into everyday delivery.
• Interpreting our design system to craft beautiful, highly interactive UX workflows from low-fidelity inputs.
• Inputting into architecture and technical direction in collaboration with Principal Engineers – making considered, well-reasoned decisions on patterns, frameworks, state management, API design and performance.
• Championing a high-quality engineering culture – test coverage, peer review, CI/CD discipline via GitHub Actions, secure coding, accessibility (WCAG) and performance.
• Mentoring and up-levelling engineers around you through pairing, PR review, architectural guidance and practical coaching on AI-assisted development.

Who We’re Looking For

• A proven senior-to-staff-level Full Stack Engineer with deep, current expertise in TypeScript, React and Node.
• Authority in React and the modern front-end stack – component-driven architecture, design systems, advanced state management (Redux Toolkit, Zustand, TanStack Query or Apollo), modern toolchains (Vite, ESBuild) and package managers (pnpm/yarn/npm).
• Strong Node.js back-end skills – RESTful and GraphQL API design, integration patterns, relational and NoSQL data modelling, and a practical understanding of deploying into modern cloud and serverless environments (AWS and CloudFlare preferred).
• Exceptional communication – genuinely client-ready.
• A strong product brain – comfortable operating without a traditional Product Owner.
• A keen eye for design – able to interpret a design system and produce beautiful, intuitive, highly interactive UX workflows.
• A proven track record with Claude Code and advanced agentic workflows.
• Rigorous engineering standards – fluency with Git-based workflows, trunk-based development, CI/CD, comprehensive testing, and a genuine commitment to accessibility, performance and secure-by-default coding.
• Technical leadership without the title – a track record of lifting teams through pairing, mentoring, PR review and example.
• A pragmatic, outcome-oriented mindset – biased to shipping, comfortable with ambiguity, and able to make sensible calls on scope, technical debt and sequencing under time pressure.

What Your Impact And Success Looks Like

• Within 1 Month: Fully onboarded onto the Reapit stack with a working local development environment and first pull requests merged.
• Established trusted working relationships with the VP of Engineering, Principal Engineers, Business Analysts, Design and the relevant squad.
• Configured Claude Code and our approved agentic tooling to our internal standards.
• Built a clear, independent view of the target problem space, the existing architecture and the immediate delivery priorities.

• Within 3 Months: Owning end-to-end delivery of substantive feature sets and client-facing workflows.
• Running productive, confidence-inspiring client sessions in a Forward Deployed capacity.
• Meaningfully influenced our wider engineering practice.
• Shipped user-facing UX that is visibly on-brand, accessible and polished.
• Recognised as a go-to technical voice within the squad.
• Left a well-documented, well-tested, maintainable footprint.

What’s in it for you?

We operate a Flexible Working Policy and there is no expectation around in-person attendance, beyond occasional ad-hoc project meetings in our Solihull or London offices. You can expect an industry competitive day rate, available on request.

We care about our industry and want it to become a more inclusive and diverse place to work. We’re driven by hiring not only by experience and relevance for the role but by sharing our values and the right attitudes and behaviours for success. We are committed to Equal Employment Opportunity through attracting and retaining a complementary team of employees and building an inclusive environment for all.