Senior Mobile Engineer

Fuse Energy is a forward-thinking renewable energy startup on a mission to deliver a terawatt of renewable energy - fast.

We're hiring Mobile Engineers to join a small, high-ownership team in our London office. This isn't a role where you'll 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.

Responsibilities:

• Design, build, and maintain responsive, reusable, and reliable mobile applications for iOS and Android platforms
• 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 to ensure smooth user experiences

Requirements:

• 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 creating 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

Benefits:

• Competitive salary and an equity sign-on bonus
• Biannual bonus scheme
• Fully expensed tech to match your needs
• Paid annual leave
• Breakfast and dinner allowance for office-based employees