Hello Dear,
I Noticed that you want to fix bugs like push notification on ios, Facebook login, map location.
Share the details of code if it is deployed somewhere so I'll require git account from where I could pull the code and start work on it.
With my skilled expertise as a full-stack, I can debug existing code quickly to identify the root cause of the issue and fix it without producing any regression issue. After each fix, I will do detail level testing to ensure its fully fixed and will not produce later
Kindly inbox me with positive hope so we can discuss it more in detail.
Thanks
Arslan