ATLANTA--(BUSINESS WIRE)--Bluefin Payment Systems announced today that Goldman Sachs Specialty Lending Group led a debt and equity growth financing in the company, joining existing investors Financial Partners, which is the private equity group for Napier Park Global Capital, and Camden Partners. Goldman Sachs Specialty Lending Group (“GSSLG”), founded in 2004, operates as the middle market financing and investing platform within The Goldman Sachs Group, Inc. GSSLG’s focus is on delivering flex