Prior to founding TwinFocus, Paul founded The Karger Group within UBS Financial Services, where he led a team that advised select institutions and high-net-worth individuals. He joined UBS through its acquisition of PaineWebber in 2000. He has also worked with technology startups and remains active in the startup community as an investor and advisor. He currently serves on the boards of CellInfo, Fundraise.com, Glory Sports International, Promontory Point Resources and Zillion.
As an active member of community and non-profit organizations, Paul co-founded and serves as Foundation Board president of the Bridge Boston Charter School in Dorchester, Massachusetts and is a supporter and advisor to Boston Medical Center, Commonwealth Shakespeare Company, Institute for Contemporary Art Boston and YearUp. He is also a member of YPO (Young Presidents Organization), Summit Series and The Metropolitan Club of New York, and was appointed by Massachusetts Governor Charlie Baker to the State Athletic Commission.