Build me an android app

I am an analytics professional starting up a location based service in Indian market. Before getting into the full fledged product, we are planning to develop a simple app with the following features: 1) Each user will be able to create and log in to his/her account on the platform by providing and verifying his email and phone number 2) There will be two types of users on the platform - Agent and Consumer 3) An agent can provide a few parameters. This will create a listing for the agent on the platform. An agent can create multiple such listings. 4) A consumer can log in to the platform and provide his requirements. As soon as he submits the requirements, all the listings available satisfying his requirement will be displayed. 5) The consumer can then click on "Contact" button which will make a call to the agent. 6) The agent can delete/modify the listing any time he wants. 7) The user should also be able to rate the agent. The app can be hosted on a AWS server. We are looking for someone who can handle both app development and deployment.