Ionic 3/4 Developer who can help us on Mobile App Performance , Multiple Device Compatibility Checking & Security

We are in need of ionic developer who can help us on mobile app performance . Our mobile app has good performance at the moment, but we want to get it much better. Also, we want to make sure if the mobile app is compatible with multiple devices. If it is possible , we need to add security layer to our app. It could be best practice recommendation.

Skills: PhoneGap, Ionic Framework, Mobile App Development, Angular.js, Android

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Project ID: #22472245