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Fuse Energy

Senior Mobile Engineer

Fuse Energy

Mobile Engineer developing applications for a renewable energy startup. Involves end-to-end feature ownership and collaboration with designers and engineers.

Posted 7/8/2026full-timeRemote • 🇬🇧 United KingdomSeniorWebsite

Tech Stack

Tools & technologies
AndroidiOSKotlinSwift

About the role

Key responsibilities & impact
  • 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

What you’ll need
  • 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

Comp & perks
  • 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

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Hard Skills & Tools
Mobile Application DevelopmentSwiftKotlinUI/UX DesignRESTful API IntegrationMobile Security FundamentalsOn-Device Machine LearningIn-App AI AssistantsDebuggingTroubleshooting
Soft Skills
CollaborationAttention to DetailProblem-Solving