Mobile App Engineer

Believ: ABOUT US At Believ, formerly known as Liberty Charge, we believe sustainable transport should be accessible to everyone. We’re a Charge Point Operator (CPO) on a mission to create the UK’s most reliable electric vehicle charging network that doesn’t cost the earth and leaves no one behind. We work closely with local authorities and businesses to deliver reliable, high-quality charging networks at pace, at scale and at zero cost. We offer all the advantages of being a scale-up business, but with the added security and long-term backing from well-known parents - Liberty Global (who also own our delivery partner, Virgin Media O2) and Zouk Capital (who manage the Government’s Charging Investment Infrastructure Fund). You’ll be joining this exciting journey at the start of our scale-up phase, and work with us to hit the ambitious targets our shareholders have set. You’ll become part of a passionate and supportive team in a fast-paced, dynamic and result-driven environment. About The Role We are seeking an experienced Mobile App Engineer to develop and optimize our customer-facing mobile application and web portal as part of our in-house Charge Point Management System (CPMS). Reporting into the Engineering Team Lead of the Driver squad, this role will be responsible for enhancing the iOS and Android apps, which are 70% production-ready, to achieve feature parity with the incumbent SaaS solution. Following the migration, the focus will shift to building innovative features and capabilities to deliver a market-leading experience for both Android and iOS users. Key Responsibilities Native Mobile Development: Develop and maintain high-quality native mobile applications for iOS and Android using Swift and Kotlin. Performance Optimization: Optimize mobile apps for speed, memory usage, and battery efficiency. API Integration: Work with REST/GraphQL APIs developed in FastAPI for real-time data synchronization. Collaboration & Feedback: Collaborate with cross-functional teams to align app features with CPMS functionalities. Testing & Debugging: Write and maintain automated tests to ensure application stability and quality. About You At Believ, we are building a culture that attracts and retains the best talent. We are a dedicated and high-performing team, accustomed to working at pace in an ever-evolving industry, and we are looking for people who are as passionate as us about cutting carbon emissions and providing cleaner air for all. The successful candidate will have the following attributes and skills: Knowledge & Experience Proven experience developing and launching mobile applications for iOS and Android. Familiarity with mobile performance profiling tools and debugging techniques. Experience with backend integration for real-time data syncing. Knowledge of Agile development processes and version control tools like Git. Engineering Mindset Ability to understand and consider the broader business context and long-term implications of technical decisions. Willingness to take ownership, innovate, and proactively seek opportunities to drive impact beyond immediate tasks. Strong focus on delivering solutions that align with business goals and address real-world challenges effectively. Commitment to delivering exceptional user experiences by prioritizing customer needs and feedback throughout the development process. Demonstrate enthusiasm, resilience, and a can-do approach to tackling challenges and driving success. Skills & Abilities Proficiency in Swift (iOS) and Kotlin (Android). Familiarity with containerized backend environments using Docker. Strong problem-solving and debugging skills. Knowledge of cross-platform optimization techniques. Benefits Competitive basic salary 25 days annual leave, plus 8 Bank Holiday days Access to wellbeing and mental health benefits such as the Calm app, personal medical insurance, critical illness cover and dental insurance Pension contribution Access to our car benefit scheme Access to our online learning platform to continue to develop and grow your career with us. Interview process Initial briefing with our recruiter Initial screening online Technical assessment and meeting the broader team in the office in Southwark Final stage online Location The business is currently based in our offices in Southwark. The position is full time and office based. Believ is an equal opportunity employer. We embrace diversity and are committed to creating an inclusive environment for our people. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation. If you don’t meet every requirement but are excited by the role, we’d still love to hear from you. #Believ … mais Benefícios do seu anúncio de vaga Medical insurance, Dental insurance Sobre a empresa Believ 9.093 seguidores Seguir Serviços para energia renovável • 51-200 funcionários • 108 no LinkedIn At Believ, we’re proud to be at the heart of your journey to cleaner, more sustainable travel. We’re building one of the UK’s most accessible, reliable, and future-ready EV charging networks – because no one should be left behind on the road to net zero. Whether you're a local authority planning your EV strategy, a landowner looking to unlock long-term value, a business aiming to attract more customers, or a driver who just wants a charger that works – we're here to make it simple, seamless and sustainable. 🩷 For communities: We deliver affordable, reliable, and intuitive on-street charging where it’s needed most. 🩷 For local authorities: We design and implement tailored EV infrastructure strategies at zero cost to councils, working in true partnership every step of the way. 🩷 For landowners and businesses: We turn land and locations into hig