Frontend Developer React

Front-End Developer

Hybrid London (2 days a week)

Up to £75,000 + Benefits

Are you passionate about building interactive, user-friendly web applications that make a real impact? We're partnering with a cutting-edge tech company combining distributed computing, simulation, and machine learning to revolutionise urban transport systems - and they're looking for a Front-End Developer to help take their platform to the next level.

Why this role?

• Be part of a mission-driven team improving the way cities move and operate.

• Work on FlowOS, a flagship product already being adopted by some of Europe's biggest public transport operators.

• Hybrid flexibility: London office 2 days per week with balance to work remotely.

• Join a diverse, ambitious team of engineers, data scientists, and urban modelling experts.

What you'll be doing:

• Designing, implementing, and testing front-end applications for FlowOS.

• Contributing across the full development lifecycle: from feature conception to release and customer testing.

• Choosing the right tools and influencing the long-term strategy for the front-end tech stack.

• Working in a cross-functional team, sharing responsibility for development, integration, and deployment.

• Building impactful solutions using technologies such as React, D3.js, MapBox, and client-side databases.

• Growing into a role with ownership and technical leadership as the web development team expands.

What we're looking for:

• 3+ years of commercial experience building interactive web applications with JavaScript/TypeScript and React.

• Experience with Node.js, Webpack, and modern development workflows.

• Strong understanding of client-side performance, cross-browser compatibility, and RESTful APIs.

• Experience with testing frameworks (e.g., Jest, Enzyme) and UI tools (e.g., Figma).

• A passion for building maintainable, scalable, and high-quality software.

• Strong communication skills and a collaborative mindset.

Bonus skills:

• Data visualisation (e.g., D3.js) or scientific visualisation experience.

• Mapping tools (e.g., MapBox) or real-time applications (e.g., WebSockets).

Package & Benefits:

• Salary up to £75,000.

• Hybrid working - London office twice per week.

• A supportive, innovative, and collaborative culture.

• Career development support through training and mentoring.

• The opportunity to make a tangible impact on urban mobility and sustainability.