Flutter Developer

Most mobile roles give you a backlog. This one gives you an industry. You build the app 40,000 professional car dealers open to buy, price and move vehicles, in a team where coding agents write the first draft and your judgement decides what survives review. Location: Berlin Schöneberg – you work on site in our office, hybrid with 3 days office and 2 days home office. About Us CarOnSale is the AI-powered platform for B2B used car trading in Europe. Over 40,000 buyers from more than 20 countries trade on our platform — and 85% of inventory is exclusive to us. We connect software, pricing intelligence, logistics and financing in one layer — as the operating system for an entire industry. One Platform. One Profit Engine. Your responsibilities You own mobile features end to end: you design, build and maintain scalable Flutter and Dart applications, from concept to productionYou build AI-first. Coding agents, LLMs and AI-assisted development are part of the daily workflow here, not a pilot project, and you decide where they accelerate the work and where they don'tYou set the technical bar for state management, networking and UI components, and you write code that is clean, testable and reviewedYou drive performance: you profile, debug and optimise the app until it holds up in the yard, on a dealer's phone, on a weak connectionYou shape architecture and technical direction together with product managers, designers and backend engineersYou mentor less experienced engineers, review their work and raise the standard of the whole teamYou track what moves in Flutter, Dart and mobile development, and you bring the tools that are worth adopting into the team What you bring 3+ years of professional experience building production apps with Flutter and DartProven depth in complex mobile applications: state management, networking, API integration, UI and UX componentsCommand of mobile fundamentals: performance optimisation, security and accessibilityExperience with CI/CD pipelines and agile deliveryAn AI-native way of working: you use tools like Claude, ChatGPT or Copilot actively in your development workflow and have real judgement about their limitsEnglish at C1 level, and you communicate clearly across an international teamBased in Berlin or ready to relocate Nice to have Experience in automotive, marketplace or B2B platform environmentsGerman at B2 level What you can expect from us Hybrid working: 3 days in office, 2 days remote 28 days annual leave2× annual career & development conversationsCompany pension with 20% employer contributionSubsidised Deutschlandticket (public transport)FitX membership or Urban Sports Club subsidyStructured onboarding with buddy programme and social eventsLived diversity: active women's network, meditation & prayer room, dog-friendly office Apply now – your CV is enough.