Develop Comprehensive Service-Based Marketplace Web App

I’m creating a marketplace that lets people discover, book, and pay vetted service providers from one place—think Rover Dog walking, but expanded to several everyday services. I’m still in the research phase and want to move quickly toward an MVP that runs smoothly as a web app... (Budget: $1500 - $3000 USD, Jobs: API Integration, iPhone, Mobile App Development, Payment Gateway Integration, PHP, UI / User Interface, Web Development, Website Design)