Clay Wilkes had already been retired for six years when he launched Galileo Financial Services in 2000. The serial entrepreneur who had been an early pioneer in telecommunications technologies (like voice over internet protocols) saw the need for better connectivity between secondary services and financial institutions 19 years ago, just as new digital services around payroll processing, transit vouchers, store cards, and other services were launching. Now the company runs the backend integrations with financial institutions for some of the biggest names in financial technology and has just raised $77 million in financing from Accel Partners. Not that Galileo necessarily needed the money.