Three Senior React and Flutter developers for 2 months Top prioritty

# Flutter & React Development Agency Needed — 3 Developers for Advanced Navigation Module We are currently hiring an experienced software development agency with the capacity to provide **three dedicated Flutter and React developers** to help build and integrate an advanced navigation module into our existing platform. ## About the Project Our platform combines location-based engagement, navigation, loyalty, and interactive mobile experiences. We are developing a new navigation module that will support both outdoor and indoor environments. The system will use multiple technologies and device sensors to improve positioning, direction guidance, floor detection, checkpoint recognition, and arrival accuracy. This is not a simple mapping project. We need a capable team that can work with an existing Flutter application, React dashboard, APIs, mapping technologies, mobile sensors, and future navigation components. ## Team Required The agency must be able to assign approximately three developers, ideally including: * Two experienced Flutter developers * One React or full-stack React developer * A technical lead or project manager who can communicate in English The developers must be available to prioritise this project and work through structured weekly sprints. ## Key Responsibilities The selected team will assist with: * Building and integrating the navigation module into our Flutter application * Developing navigation interfaces, directional arrows, distance indicators, checkpoints, and arrival flows * Integrating GPS, compass, accelerometer, gyroscope, and barometer data * Supporting indoor and outdoor positioning logic * Developing floor-change detection for elevators, stairs, and escalators * Integrating OCR and visual checkpoints where required * Working with Mapbox, Google Maps, or similar mapping technologies * Connecting the Flutter application to our React-based administration dashboard * Building React components and integration hooks * Integrating APIs and existing backend services * Testing the module in real hotels, shopping centres, and outdoor locations * Improving accuracy, reliability, performance, and user safety * Providing clean, documented, production-quality source code ## Technical Experience Required Your agency should have strong experience with: * Flutter and Dart * React and JavaScript or TypeScript * REST APIs and backend integrations * Mapbox or Google Maps * Mobile GPS and location services * Device sensor integration * State management in Flutter * Android and iOS deployment * Git-based development workflows * Testing, debugging, and performance optimisation Experience with the following would be highly valuable: * Indoor navigation * Pedestrian dead reckoning * Kalman filtering or sensor-fusion techniques * Barometer-based floor detection * Google ML Kit OCR * Computer vision * Geofencing * AR or location-based applications * Movement classification * Navigation safety systems ## Working Method We expect: * Weekly development sprints * Clearly defined milestones and deliverables * Regular demonstrations of working functionality * Daily or frequent communication * Source code committed through Git * Testing builds supplied for Android and iOS * Transparent reporting of risks, blockers, and technical limitations The initial module is expected to require approximately **one to two months**, depending on the final technical assessment and the experience of the assigned team. There is also potential for ongoing development work, additional modules, milestone rewards, and a longer-term relationship for the right agency.