Senior Mobile Engineer

Fuse Energy is an energy startup on a mission to make energy abundant and affordable, fast. We combine first-principles thinking with cutting-edge technology to build a radically better energy system.

We've raised over $200M from top-tier investors including Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, 20VC, Hummingbird and Collaborative Fund, alongside strategic angels including Nico Rosberg and GPs behind Meta, Revolut, Spotify and Uber.

We're building a fully integrated energy company: developing our own solar, batteries and other generation projects, building our own hardware, improving and developing grid infrastructure, trading power in real time, using AI across the business, and installing distributed energy in homes. By selling directly to consumers we cut out the middleman, lower costs and pass the savings on to our customers.

We're hiring Mobile Engineers to join a small, high-ownership team. You won't be handed fully-specced tickets: you'll own features end to end, from customer-facing product to internal tools, including shipping consumer-facing AI features into production on mobile. You'll work in Swift and Kotlin across iOS and Android alongside a tight team of mobile and web engineers. Our infrastructure and backend are already excellent; we're looking for mobile engineers who bring the same bar of craft and ownership.

Responsibilities

• Design, build and maintain responsive, reusable and reliable mobile applications for iOS and Android
• Own features end to end, from shaping the product idea through to shipping and iterating in production
• Work closely with designers to implement high-quality UI/UX and ensure design consistency, with a real focus on craft and polish
• Ship consumer-facing AI features into production on mobile, from on-device ML to in-app AI assistants
• Contribute to architectural decisions to ensure scalability, maintainability and flexibility of the mobile codebase
• Test, debug and resolve issues to maintain app stability and reliability
• Troubleshoot production issues and provide timely resolutions for smooth user experiences

• 5+ years of professional experience building mobile applications for iOS and Android
• Proficiency in Swift or Kotlin, with deep expertise in at least one platform and the range to work across both
• Strong grasp of mobile UI/UX principles and best practices for intuitive, responsive experiences, with a real eye for craft and detail
• A track record of owning features end to end and contributing product ideas, not just executing specs
• Hands-on experience integrating RESTful APIs with mobile applications
• Familiarity with push notifications, messaging services and related mobile frameworks
• Understanding of mobile security fundamentals and ability to implement secure data handling

• Competitive salary and eligibility for equity
• Biannual bonus scheme
• Fully expensed tech to match your needs
• Private health insurance
• Breakfast and dinner allowance for office-based employees

As we hire globally, benefits vary by location.