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Senior Full Stack Developer (Flutter/Go) at MMDSmart Ltd. #ThriveatMMDSmart. Would you like to build a career in a leading multinational IT company?. We are looking for a . Senior Flutter (Mobile) Developer. to join our team.. Since 2007, MMDSmart has been a leading supplier in cloud communications, delivering game-changing IT products to businesses in over 100 countries. Our success is fueled by the inspiration and innovative ideas of our team members, encouraging their growth and impacting our Messaging and Voice solutions. These empower our clients to communicate more effectively with their customers. Don’t miss this chance to excel in a rapidly expanding tech company, where your potential and ambitions are not just recognized, but celebrated.. What will you do at MMDSmart?. . Design and develop high-quality Flutter apps for Android and iOS. . Collaborate with backend engineers to define APIs and build full-stack features. . Write clean, testable, maintainable Dart code following best practices. . Implement custom Flutter plugins to bridge native functionality when needed. . Integrate with real-time communication tools (e.g., WebRTC, sockets). . Work with product managers and designers to deliver smooth, performant UX. . Debug, profile, and optimize performance across devices. . Participate in code reviews, architectural discussions, and agile development cycles. . You are a perfect match if you have:. . 5 + years of experience in software development;. . 3+ years of experience with Flutter and Dart;. . 2+ years of experience with GO;. . Strong understanding of mobile architecture and cross-platform development;. . Solid experience consuming RESTful or GraphQL APIs;. . Experience with state management solutions (e.g., BLoC / Cubit, Provider, Riverpod).. . Nice-to-Have / Advantages:. . Experience building or maintaining Flutter plugins (Android/iOS interop);. . Familiarity with WebRTC, signaling, and real-time streaming protocols;. . Experience with Firebase, WebSockets, push notifications;. . Familiarity with clean architecture and test-driven development.. . Company Location: Bulgaria.