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Frontend Developer
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Frontend Developer
2 days in London office
£62,500 to £77,500
About the role
A growing climate tech company is hiring a Frontend Engineer to help build a data-heavy B2B platform used by policymakers, planners, and investors to model energy systems. You'll work on a modern, greenfield React/TypeScript codebase, with real autonomy in a small, ambitious team.
Responsibilities
- Deliver frontend features end-to-end, working closely with product and design to build high-quality user experiences using React and TypeScript
- Implement complex UI patterns including data tables, filtering workflows, virtualised lists, and interactive data visualisations
- Apply performance optimisation techniques for large datasets and visualisation-heavy workloads, and help evolve the frontend architecture with reusable, composable components
- Maintain high code quality through testing, code review, and CI/CD practices
- Collaborate with backend engineers and contribute technical input during agile planning, refinement, and delivery
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Requirements
- 3+ years building production frontend applications with TypeScript and modern React
- Proven experience building complex, data-heavy UIs — tables, filtering, forms, and interactive visualisations
- Solid understanding of frontend performance principles: profiling, reducing unnecessary renders, and working efficiently with large datasets
- Experience with client-side data management patterns (e.g. TanStack Query) and testing
- Experience building accessible, reusable UI components with modern tooling such as Tailwind
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