Greetings,
I have gone through your project requirement for UI design with compatible with small to X-large screen size devices. I'm available to discuss with your current running app and additional information.
I’m Android/iOS Senior developer having rich experience of mobile app development for 5+ years. I have a team of developers and designers. So, I'll be comfortable with your requirements. I had worked extensively with objectiveC, swift, Java, C++, PHP, MySQL, XCode, and Eclipse and have a strong grip on OOP and design patterns.
I am sure you ll give me an opportunity to work with you. Waiting for your response...
Thanks,
Ahmed