Cross-Platform Flutter App Enhancement

I'm looking for an experienced developer to help me advance my existing Flutter application. Ideally someone with a strong understanding of both iOS and Android platforms. Key Requirements: - You must be proficient in Flutter with proven experience of building applications for both iOS and Android. - Experience in complete application assistance is essential as you will be expected to understand the codebase and provide improvements. - The app requires distinct features to be enhanced, such as user authentication, push notifications, and in-app purchases, therefore, previous exposure to such features will be ideal. Your role will not be to develop from scratch, but to provide much-needed input, code refinement, and feature enhancements. I am counting on your expertise to bring my application to a whole new level. Looking forward to a productive collaboration.