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Frontend Software Engineer – React / TypeScript / Complex Web Applications
Location: London, UK (Hybrid)
Type: Full-time
Level: Mid to Senior
Salary: £70,000 to £140,000
About the Role
This startup is building a cutting-edge platform that redefines how engineers design physical products.
As a spin-out from one of the UK’s most successful technology companies, the team includes world-class engineers and developers from top-tier product organisations. We're searching for a frontend engineer passionate about building complex, high-performance web applications.
Tech Stack (Engineering Environment)
Frontend: React, TypeScript, Vite, Zustand/Recoil, Tailwind (or similar), Web Workers, WebGL/WebGPU (nice to have)
Backend: Python, FastAPI, Pydantic, PostgreSQL
Infrastructure: GitHub Actions, GCP, Docker, Kubernetes
Paradigms: Event-driven architecture, functional programming, real-time data flows
Responsibilities
- Build and maintain complex, high-performance web applications using React and TypeScript
- Develop interactive UIs for geometry exploration, real-time simulations, and high-density data visualisation
- Work closely with engineers and domain experts to transform intricate physical and mathematical concepts into accessible UX flows
- Use functional and declarative programming patterns to create composable, reusable, testable UI components
- Architect and maintain client-side state management solutions that handle large, rapidly changing datasets
- Optimise performance using techniques such as memoisation, batching, Web Workers, and incremental rendering
- Own features end-to-end—from initial concept, prototype, and UX exploration through to production release
- Collaborate with backend teams to design efficient API shapes for event-driven and streaming data systems
Requirements
- Bachelor’s degree in Computer Science, Engineering, Mathematics, Physics, or a related technical field
- 2+ years experience building complex, production-grade web applications
- Strong proficiency with React, TypeScript, and modern frontend tooling
- Experience working with Python
Frontend Software Engineer – React / TypeScript / Complex Web Applications
Key Skills
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