I've done extensive work on the HubSpot platform, including building smartlists that work off of custom created properties, that are programmatically populated and wiped using the HubSpot API. I write web applications in PHP, and work with MySQL and SQL databases, which I can make "talk" to HubSpot. In other words, I've done some complex integrations with HubSpot, so our project, whether large or small should be a good fit for me!