Geoffrey is a technical advisor to numerous venture capital firms, startups, and other companies. He previously was a General Partner at U.S. Venture Partners, managing a >$2B portfolio of diverse startups. Prior to this he was Chief Network Office (CTO) for Networking at Sun Microsystems, and in charge of technical directions in networking and scaling, protocol design, and implementation. He also led advanced development and network security.

Geoff has worked as a commercial diver and recreational dive instructor. He is a qualified sidescan and sector scan sonar operator, and underwater search and recovery specialist. He captains various vessels, both power and sail.