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

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and maintaining mobile applications for iOS and Android, with a strong focus on UI/UX design, feature ownership, and integration of AI functionalities. Proficient in Swift or Kotlin, with a solid understanding of mobile security and best practices for app stability.

Highest-signal resume keywords

Mobile Application DevelopmentSwift or Kotlin ProficiencyUI/UX Design PrinciplesFeature OwnershipRESTful API Integration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Mobile Application DevelopmentSwiftKotlinUI/UX DesignRESTful API IntegrationMobile Security FundamentalsOn-Device Machine LearningIn-App AI AssistantsDebuggingTroubleshooting

Soft Skills

CollaborationAttention to DetailProblem-Solving

Tools & Technologies

Mobile FrameworksPush NotificationsMessaging Services

Industry Keywords

IOSAndroidConsumer-Facing FeaturesScalabilityMaintainability

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