Howdy.
I have read your description and I am very confident with your project.
As an experienced full stack developer with 7+yrs of experience,
I have done many projects using Node js, Express and python frameworks such as Flask as backend and very familiar with REST Api integration.
I have built auth system based on React such as Okta, Oidc and Oauth in React/Typescript and well versed in React themes such as Mui, Chakra Ui, Core Ui, AntDesign...
Amazon web service and Version control tools such as GitHub, Gitlab, Bitbucket are also in my skills.
I would be appreciated if I have a chance to help you to meet your goal.
Thanks.