Frontend Software Engineer

Frontend Software Engineer

Full-Time 49500 - 60500 £ / year (est.) Home office (partial)
TRG

At a Glance

  • Tasks: Build innovative software for climate solutions with engaging frontend challenges.
  • Company: Join a mission-driven climate-tech nonprofit making a real difference.
  • Benefits: Hybrid work model, competitive salary, and opportunities for professional growth.
  • Other info: Collaborative team environment focused on impactful projects.
  • Why this job: Tackle complex problems while contributing to cleaner energy systems.
  • Qualifications: 3+ years in React and TypeScript with a passion for frontend engineering.

The predicted salary is between 49500 - 60500 £ per year.

I’m working with a climate-tech nonprofit building software that helps governments, policymakers and energy planners make better decisions about the transition to cleaner electricity systems. This isn’t a standard frontend CRUD role. The frontend engineering problems are genuinely interesting. You’ll be building spreadsheet-like interfaces, interactive visualisations, filtering workflows and complex data-heavy features over datasets that can run into millions of rows — including input tables of around 5.1 million rows, well beyond what Excel can handle.

They’re now looking for a Frontend Software Engineer to join a small interface team working on a modern, greenfield React and TypeScript codebase. You’ll work closely with a Principal Frontend Engineer, Product, UX, backend engineers, AI engineers and energy specialists, with plenty of ownership over the features you build. The work can vary significantly sprint to sprint — from large data grids and visualisation to AI-powered product features.

  • Have 3+ years building production frontend applications with React and TypeScript
  • Have built complex, data-heavy interfaces involving tables, filtering, forms or visualisations
  • Understand frontend performance and how to work efficiently with large datasets
  • Have experience with client-side caching, synchronisation and invalidation — TanStack Query or similar
  • Have worked with frontend testing across unit, component, integration or E2E levels
  • Enjoy building reusable, accessible components and modern frontend architecture
  • Are comfortable working closely with Product, UX and backend teams
  • Enjoy solving difficult frontend problems rather than simply implementing standard screens

Experience with AG Grid, D3, AG Charts, TanStack Table/Virtual or Parquet would be particularly useful, but isn’t essential. Climate or energy experience isn’t required either — they’re much more interested in strong frontend fundamentals and people who enjoy technically challenging product engineering. This is a good opportunity for someone who wants meaningful ownership, technically difficult frontend work and the chance to build software that has an impact beyond commercial optimisation.

Frontend Software Engineer employer: TRG

Join a dynamic and innovative AI-native SaaS platform in London, where as a Senior Rust Engineer, you'll enjoy a flexible, people-first culture that prioritises your well-being and professional growth. With opportunities to work on cutting-edge technology and take full ownership of your projects, you will be part of a lean team that values speed, decisiveness, and collaboration. Benefit from stock options, private medical insurance, and a supportive environment that encourages the use of leading AI tools in your daily workflow.

TRG

Contact Details:

TRG Recruitment Team

We think you need these skills to ace Frontend Software Engineer

React
TypeScript
Frontend Performance Optimisation
Data-heavy Interface Development
Client-side Caching
TanStack Query
Frontend Testing (Unit, Component, Integration, E2E)