I need a reliable Flutter developer to squash five outstanding issues in my kitchen video monitor application. The priority is performance: parts of the UI lag under load and a few interactive elements misbehave, so the overall user experience feels sluggish. Here is what I need addressed: • Replace the current push-notification sound with a custom tone so the staff can distinguish kitchen alerts from dining-room pings. • Make sure orders print immediately and in the correct format every single time; no more random skips. • Tidy up a couple of interactive widgets that occasionally freeze or ignore taps. • Remove any unnecessary memory-hungry listeners or rebuilds you spot while touching the code. • Give the whole build a quick UE polish to ensure screens load snappily and animations stay smooth. The project is built with Flutter 3.x and uses Firebase Cloud Messaging for notifications plus a network printer plugin. Please work in a clean Git branch and supply a concise changelog when you submit the pull request. Once the updated APK runs on our countertop tablets without stuttering or unexpected behaviour, I’ll consider the job complete.