Marketplace for energy projects

I needed to create a marketplace for energy projects, for example, the company needs to install solar panels, it chooses the mounting method, the project's size in kW and other characteristics of the project, they publish the project and wait for offers from contractors, after which you can choose the winner for the project. I implemented a paid subscription system, with different roles for users and implemented payments through paypal. I also developed a sophisticated search filter mechanism: it is search by project or company characteristics, location and post code + radius in miles. I implemented a personal cabinet with many management functions, for example, how to add a company in search through the site and other things, for convenient business.