Senior Fullstack Engineer at YASSI

London, England, United Kingdom -

Full Time

Start Date

Immediate

Expiry Date

09 Jan, 26

Salary

0.0

Posted On

11 Oct, 25

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

TypeScript, React, TailwindCSS, XState, REST, GraphQL, Data Visualisation, Golang, PostgreSQL, ClickHouse, Automated Testing, AWS, CI/CD, Geospatial Data, APIs, React Native, AI-Assisted Tooling

Industry

Description

About REalyse 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. The Role 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. What You’ll Do 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. What You’ll Bring 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 Highly Desirable 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 Who You Are 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

Responsibilities

Design, build, and maintain performant front- and back-end systems across data and analytics products. Collaborate with product, data, and design to turn concepts into shipped features.