Website Backed in AWS

We are a startup company and are looking to build a website that is both cost effective as well as scalable. We want a team to build the backend of our website in AWS using serverless technologies. This would be APIs calling Lambda functions that would have the business functionalities we want to execute. Security is our primary concern and we want to execute the project in a short timeframe. So we are looking for a team of AWS specialist developers who can start immediately and execute the project with parallel flows in a time-bound and efficient manner. We would look at a team that can implement the project end-to-end, including 1) setting up the AWS infrastructure and setup security 2) developing and deploying the code and APIs 3) testing & debugging 4) working with the UI team in integrating the APIs 5) moving to a Production/Live environment and providing support We can setup calls to go over the project brief and architecture design as required.