Website Event Posting and Payment Integration

I recently launched my website and need to integrate features for posting events, selling tickets, processing payments, sending invoices, and adding a map. The ideal candidate will have experience in web development, particularly with payment systems and mapping integrations. This project requires both front-end and back-end development skills to ensure seamless functionality. As event tickets are sold on the website it needs to update with google maps and show the map and the events as "blips" growing as tickets are sold.