Patrick Imbach is the Chief Financial Officer at Callsign. The business is an identification platform which uses biometrics and deep learning technology to power adaptive access control for consumers and enterprises. Prior to that, Patrick built and led KPMG's practice for fast growing technology businesses and innovative startups advising startups and scaleups throughout their early and growth stages. He was a member of KPMG's global Steering Committee for Innovative Startups and a member of KPMG's TMT leadership team in the UK. Patrick holds an MBA and a doctorate in business administration from Heinrich Heine University, Düsseldorf.