Hi There, How are you today?
We have already worked on similar app on flutter and we can help you to build API for the same using all those AWS services.
AWS appsync, cognito, dyanmoDB, S3, route53
==> we know all of the above services and we have certified AWS solutions architect as well so we will give you guaranteed top quality result
we have over 7 years of experience working with AWS and also developed several serverless apps using dynamodb as a database.
We will daily push the code on repo and send you daily updates.
Looking forward to hear from you and ready to start the development.
Thanks,
Jay