Finding a second act after Uber is a lot harder than calling up another ride.

“A lot of Uber alumni have found themselves looking for their next venture,” says angel investor and adviser Matthew Marra. “It’s pretty hard to replace the adrenaline of working at a company with the growth and scale that Uber had.”

Matt Marra

Matt Marra at Cup of Joe, a favorite place to do his work in Portsmouth. The Seacoast-based startup investor has joined Boston-based Knox Financial as vice president.