LeanCode Senior Flutter Dev Marcin Chudy shared insights from integrating a Flutter module into a native production banking app at the Flutter Tech Summit in 2026.

LeanCode is a full-cycle software development company designated as an official Flutter consultant by Google. With a team of 80+ tech experts, we build software solutions that drive change and help enterprises scale. Flutter is the backbone of our expertise. As one of the first companies in Europe to be designated by Google as an official Flutter consultant, we’ve been using the framework since its early days to deliver high-performance and secure apps for mobile, web, and desktop. Our team of 30+ dedicated Flutter engineers, including two Google Developer Experts (GDEs), has delivered dozens of enterprise-grade Flutter projects for even the most demanding industries. We actively support the Flutter ecosystem through long-term community engagement. As founders of the Flutter Warsaw Community (2,000+ members), we organize regular meetups, and also created Flutter Europe, one of the largest Flutter conferences in the region. Our engineers speak at international events across Europe, Asia, and the U.S., sharing expertise and best practices. We also develop open-source tools, such as Patrol, our Flutter-first UI testing framework, and collaborate with universities and partners to educate and inspire the next generation of Flutter developers. Our solutions meet the highest standards of compliance, data security, and scalability, trusted by global brands such as Millennium Bank, Credit Agricole Bank Polska, Virgin Money, Tide, Maspex, Sonova, Shell, Viessmann, NOS, and E. Wedel.