As a seasoned developer with expertise in both Flutter and Laravel, I understand the nuances of your restaurant food delivery app from both the back-end and front-end perspectives. I am confident that my skills and experience can effectively resolve the issues you've outlined.
Regarding the first issue, I can enhance the notification volume and fix the problem of sound interruption when you navigate to different tabs in your admin system. With my firm knowledge of Laravel, I'll thoroughly analyze the codebase, identify the root cause, and offer a robust solution that keeps the notification sound consistent even when switching between tabs.
Next, I have an eye for detail that is crucial when it comes to creating legible invoice printouts. I'll meticulously examine your existing format, identify the problems causing the illegibility, and craft a clean, easy-to-read layout that meets all your requirements. Lastly, I find great value in efficiency within a kitchen environment. My experience in Flutter entails using such features like ordering tokens to ensure smooth operations within your kitchen whilst still optimizing performance on your app. Don't let these issues hamper your service quality; choose someone who is experienced and enthusiastic about resolving them!