Milestone based App development back end work using Python & Django for an automobile services startup! -- 2

I am looking for a skilled developer to work on the back end of my app for my automobile services startup. The main functionality of the app is booking services, so experience in this area is ideal. I require integration with external APIs or services, so experience in this area is also necessary. The level of customization needed for the user interface is moderate, so knowledge of Python & Django would be ideal. If you have experience in app development, especially for a start-up, please apply!