React native expert needed at 500-600 INR an hour -- 2

I am in need of an advanced React Native expert who can work on my project for a duration of 1-2 weeks. The ideal candidate should have experience in implementing device tokens, user authentication, and optimizing app performance. Additionally, knowledge of payment gateway integration and social media integration would be beneficial. The hourly rate for this project is 500-600 INR.

device token null issue
lead details page improvements
custom notification sound
sync activity api time improvements
improve startups times