Flutter AR developer

Seeking a Flutter developer with AR expertise to build a lightweight proof of concept that detects walls in real time and overlays paint colors, using a single Flutter codebase (no native apps) compatible with both Android (ARCore) and iOS (ARKit). The app should support plane/wall detection via the device camera, allow users to tap to select a wall surface, and apply real-time color overlays with adjustable opacity. It should include a basic color picker with preset swatches, a toggle for before/after view, snapshot saving, and deliver smooth performance on mid-range devices. The code must be clean, lightweight, and well-commented for clarity.