Looking for an Expert Ionic Developer

This is an Ionic 3 based code. to run the code, you need to check it on the lower version than 11 for the npm. v10.15.3 I am running it with. Issues- 1. Registration and second level-registration screen have very slow model loading list as the list are very large and stored locally on the code. Refer to profile-complete and registration pages where the model controller is loaded. This is happening in iOS only. On the emulator, it works fine. You need to fix the speed and error issue which appears once in a while. 2. Linkedin doesn't work in iOS and Android both.