Among Curtis' clients have been such companies as Cisco Systems, Digital Island, Doubletree Hotels, E*TRADE Group, JetBlue Airways, Restoration Hardware, and many top-tier investment banks and venture capital funds.

He has handled pro bono projects that have had significant impact on the technology sector, including the spin-off of Firefox from Mozilla, the establishment of the Wordpress Foundation, and the creation of the Internet of Things Consortium (the IoTC) and the Association of Digital Asset Managers (ADAM).