Hi, there, how are you? I can build your project with 3 privileges correctly.
I have experience in a lot of kind of payment gateway integration such as worldpay, alipay, stripe, square, paypal and cow pay.
I am a full-stack developer and very familiar with firebase, react, node, express. I have many experiences in firebase(auth, firestore, cloud functions, push notification and extensions), web app, SPA, PWA, SASS.
Also I am very familiar with bootstrap4, redux, redux-saga, typescript and developed many project with react+firebase.
I always work hard and deliver the best result with the well commented clean code.
I am able to complete your project perfectly within your timeline.
Kindly contact me to get started the project.
Look forward to response from you.
Many Thanks, Konstantin