Location
Central London

Hours
Full Time

Salary
Competitive salary

About the Role
Fuse Energy is a forward-thinking renewable energy startup on a mission to deliver a terawatt of renewable energy - fast. We combine first-principles thinking with cutting-edge technology to build a radically better energy system. Having raised $210M from top-tier investors, we are creating a fully integrated energy company, developing solar, wind, and hydrogen projects, real-time power trading, and distributed energy installations. By selling directly to consumers, we cut out the middleman, lower costs, and pass on savings to customers.

We are hiring Senior Mobile Engineers to join a small, high-ownership team in our London office. This role offers full ownership of features end-to-end, from customer-facing products to internal tools, including shipping consumer-facing AI features into production on mobile platforms. You will work with Swift and Kotlin across iOS and Android alongside a tight-knit team of mobile and web engineers, contributing to expansion into new markets and refining the app experience to feel effortless.

Your responsibilities will include designing, building, and maintaining responsive, reusable, and reliable mobile applications for iOS and Android platforms; owning features from ideation through shipping and iteration; collaborating closely with designers to implement high-quality UI/UX with a strong focus on craft and polish; shipping consumer-facing AI features such as on-device ML and in-app AI assistants; contributing to architectural decisions to ensure scalability, maintainability, and flexibility of the mobile codebase; testing, debugging, and resolving issues to maintain app stability and reliability; and troubleshooting production issues to ensure smooth user experiences.

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

About you
You are a highly motivated engineer who takes pride in craftsmanship and ownership. You enjoy working collaboratively in a small team and thrive in a fast-paced startup environment. You have a passion for building polished, user-friendly mobile experiences and are excited by the opportunity to ship innovative AI features on mobile platforms.

Qualifications
No formal qualifications are explicitly required; however, your professional experience and demonstrated skills in mobile development are essential.