Flutter Expert for Ride-Hailing App Reconstruction

We operate as a software house and are delivering this project for one of our clients. The project is an Android application built in Flutter, designed to improve and extend the functionality of popular ride-hailing applications. We have been developing this project over the past several months, and the client is interested in continuing its development in the future. For this reason, we are looking for an individual developer or a team with whom we can establish long-term cooperation. Unfortunately, we currently do not have access to the application's original source code repository. The previous development team involved in the project has closed its business, so at this stage we only have access to the latest APK file. Based on this APK, it will be necessary to recreate the application's current behavior, logic, and existing functionality as accurately as possible. After that, we plan to implement additional changes and new features according to the client's requirements. We are looking for an expert or a team of experts with strong Flutter and Android experience, especially developers who have worked with APK analysis, reconstruction of existing application behavior, and rebuilding application logic without access to the original repository. Once the current version of the application has been recreated, we intend to continue its further development. The client is interested in additional features and ongoing improvements, so we are specifically looking for someone who can take over the project and continue working with us on a long-term basis.