Make A Website And Mobile App For My Team

Me and my team are working on a social media....we need someone to make the design (responsive website...mobile app also responsive...simple and minimalistic logo)...we already have the api (but it has bugs and things to be optimized)...we need someone who can make a responsive nextjs website based on the design (the css must be styled components with sass)...optimize our fastapi api (that uses mongodb libraries such as pymongo and mongoengine...and redis....it also includes in part of the job make the pytest tests )...and also make a react native app version of the website

the limit of days to be done each part of the project is :
-design --> 4 days
-nextjs website-->2 weeks
-react native app-->2 weeks
-pytest tests-->1 week
-fastapi api optimization-->1 week and a half

(P.S.->the website will have shopping options,so if you already know stripe it would help you)