Hi.
I saw your description carefully and I am confident I can full fill your requirement.
So I provide my skills in hopes of working with you.
I am full-stack developer and I have 4+ years of ample experience in the mobile app(Android & iOS) development.
-UI/UX Design
-Front end: React Native/Redux(Top Skill), Ionic, Android(Kotlin), Swift(3, 4, 5), Object C
-Back end: PHP(MySQL), NodeJS, ExpressJS, MongoDB, Google Firebase, Amazon Web Service
-Integration: RESTful APIs, Payment Gateway, Google Map API, AR
-In-App purchase & push notification & Approval to AppStore
Please feel free to contact me if you want.
I look forward to working back with you.
Thank you!