Ernst has many years of experience in C&B and is chairman of several platforms (C&B, Job Evaluation, International Mobility) with top international companies as members. He was responsible for C&B Heineken, FrieslandFoods en Sara Lee International for many years and initiated and managed international C&B platforms and surveys (Netherland, Europe, Afrika & Middle East, Far East, Canada).

Ernst is co-founder of the Expatise Academy and member of its Faculty since 2011.