Senior Fullstack Engineer

REalyse operates in the PropTech space with a focus on data and analytics. We’ve built the foundational technologies powering some of the most advanced property data tools in the UK, enabling our customers to make better, faster, data-driven real estate decisions.

Our products bring together massive datasets on property, planning, demographics, and investment performance into a unified platform. We’re a small, ambitious, and technically strong team solving complex problems in a fast-moving industry — and we’re looking for someone who wants to help shape the next generation of property intelligence products.

We’re looking for a senior full-stack engineer who combines strong technical depth with an entrepreneurial mindset — someone who can prototype quickly, deliver end-to-end, and help us scale and evolve our platforms.

You’ll work across our modern data and application stack — from TypeScript and React on the front end, to Golang and PostgreSQL/ClickHouse on the backend, all deployed through AWS. You’ll have a high degree of autonomy, working within a small cross-functional team that moves fast and values clarity, quality, and measurable business impact.

• Design, build, and maintain performant front- and back-end systems across our data and analytics products.
• Prototype rapidly and iterate on ideas that can become new products or core features.
• Deliver production-quality code and infrastructure that scales reliably.
• Collaborate with product, data, and design to turn concepts into shipped features.
• Contribute to architectural decisions and technical strategy.
• Mentor and support other engineers in modern full-stack development practices.
• Help evolve our CI/CD and deployment pipelines, with a focus on automation, observability, and developer experience.

We’re not looking for a “jack of all trades” — we’re looking for someone who excels in full-stack development across most of our stack and is eager to close any remaining gaps fast. You’ll need to show strong, hands-on experience with:

• TypeScript & React (including modern tooling and patterns)
• TailwindCSS or an equivalent styling framework
• XState or other state machines for predictable UI logic
• REST & GraphQL API design and integration
• Data visualisation (e.g. D3.js, Recharts, or similar)
• Golang (our core backend language)
• PostgreSQL & ClickHouse, including schema design and query optimisation
• Automated testing, including unit and end-to-end (we use Vitest & Playwright)
• AWS, particularly ECS, Fargate, S3, CloudFront, Lambda, and related DevOps tooling

• Familiarity with geospatial data and web mapping (e.g. vis.gl, Deck.gl, Mapbox, PostGIS)
• Proven experience building and optimising APIs for large data volumes
• Ability to design, set up, and maintain CI/CD pipelines
• Experience with React Native and delivering mobile app experiences
• Experience working with AI-assisted tooling (e.g. GitHub Copilot, Cursor, or prompt-based workflows) and awareness of their trade-offs
• Demonstrated ability to work in a start-up or scale-up environment, wearing multiple hats when required
• Strong sense of product ownership — you can articulate not only how something should be built, but why

• You think and act like an owner — entrepreneurial, proactive, and self-driven.
• You can move fast without compromising quality.
• You’re comfortable with ambiguity and thrive in an environment where priorities evolve.
• You care about measurable impact — technical, product, and business.
• You value clarity, simplicity, and maintainability in your work.

• [TBC] per annum, depending on experience
• 25 days annual leave + generous parental leave
• Regular social events, meetups, and game nights
• International and diverse team culture
• Educational resources and professional development opportunities
• Hybrid working flexibility