Freelance Senior Mobile Engineer (React Native, Expo, TypeScript) m/w/d

Welcome to easybill. 22,000+ companies rely on easybill. We ensure that daily invoicing, processes, and integrations run smoothly. With easybill-mobile, we are bringing core features of our platform to iOS and Android—and we are looking for you to help shape the app both technically and from a product perspective. You will receive clear priorities, short decision-making paths, and the space to solve things cleanly. With us, you take on responsibility: for technical decisions, well-thought-out user experience, and an app that our customers can rely on while on the go. The ideal profile? You are a freelancer deeply experienced in TypeScript, React Native, and Expo, understand the specifics of mobile applications, and want to decisively shape a product in an early stage of development. Ideally, you also bring knowledge of PHP and Symfony to help design features on our REST API side as well. Tasks You will further develop easybill-mobile based on React Native, Expo, and TypeScript for iOS and Android. A technical foundation with login, dashboard, and document overviews is already in place. You will build upon this and shape the next steps together with the team. You translate requirements related to invoices and documents into understandable mobile workflows and high-quality native interfaces. You will further develop the app architecture and create maintainable structures for navigation, reusable components