Ernst Grob spent his entire career working at Swiss and international banks, building up a wide range of knowledge across all sectors of banking and finance. During his five years as an auditor at Citibank, he travelled extensively. Later he worked in Mexico City for four years as the head of various organisational units. Since then, he has held various management positions in operations and securities departments, and contributed to setting up important strategic projects for the private banks Cantrade Ormond Burrus and then Ferrier Lullin, where he began working in 1987.