Steve is your one-man team - jack of all trades, master of.. all trades. I've learned so much working for him, from design to frontend development, backend and making decisions by myself to push the business forward.
He has high standards, and will tell you upfront if something's not right. It's challenging to meet those standards, but the product and everyone he works with is better for it. If you have a chance to work with him, don't miss it!