Hello, I represent Ukrainian based IT-company Webbook Inc that provides services in the IT-sphere for international business. Our developers can help You with website to make easy to buy crypto asset with api from exchange like poloniex, binance. Also we can complete other tasks that You need for perfect work . We have a lot of experience and hight skills in PHP, Javascript, Web Development, API, etc.
More about our experience, You can review here - https://www.freelancer.com/u/webbookstudio.
Waiting for Your valuable response for more detailed discussion. Regards.