Senior Product Engineer

Fuse Energy

Product Engineer developing web applications for renewable energy startup in London. Collaborating with backend and mobile engineers, focusing on AI-driven features and user experience.

Posted 7/6/2026full-timeLondon • 🇬🇧 United KingdomSeniorWebsite

Tech Stack

Tools & technologies

JavaScriptNext.jsReactTypeScript

About the role

Key responsibilities & impact

Own features end-to-end, from architecture through to shipped, polished UI, across both customer-facing products and internal tools, including consumer-facing AI features shipped into production
Build and maintain responsive, performant web applications using React, TypeScript, Next.js, and modern front-end practices
Collaborate closely with our backend and mobile engineers to design APIs and ensure smooth data integration, including with AI/ML services
Work directly with product and design to deliver intuitive, detail-oriented user experiences, and push back when something isn't good enough
Prototype and experiment to test and validate new features, including AI-driven product ideas, using data to inform decisions
Help define product direction, not just execute it, we want people who dig into the "why," not just the "how"
Contribute to our broader product direction and help shape the future of clean energy tech

Requirements

What you’ll need

5+ years of hands-on experience developing web applications with TypeScript, React, HTML, CSS, and Next.js
A track record of owning and shipping consumer-facing products, with a portfolio or examples that show genuine attention to design detail
Demonstrated ownership, able to speak to decisions you drove, not just tasks you completed
Strong communication skills and ability to collaborate effectively across product, design, backend, and mobile
Understanding of performance optimization techniques for modern web applications
Based in London (or willing to relocate) and able to work from our office

Benefits

Comp & perks

Competitive salary
Biannual bonus scheme
Fully expensed tech to match your needs
Paid annual leave
Breakfast and dinner allowance for office based employees

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Web Application DevelopmentHTMLCSSAPI DesignAI/ML Integration

Soft Skills

Strong CommunicationCollaborationAttention to DetailOwnership