Dear Polish Employer.
I am Yu.
I have gone your requirements for a long time.
I wish you believe me that have professional workload and right attitude to achieve your task via my bid.
Here are my view regards to your requirement.
1st: I am sure that FIREBASE AUTH FOR REACT NATIVE
2nd: my code is exceptionnaly well written and meet dry principles.
Especailly EXPO AND MOBX FOR REACT-NATIVE is good at working including strong responsive design
3rd: I will offer you excellent support available latest version frameworks such as gatsby JS and redux
4th: I am ready for google auth , firebase auth, facebook ... such as whole Oauth implementation.
Looking forward to seeing your response.
Thanks a lot.