Delia Amrein studied law and economics at the University of St. Gallen (HSG). During her studies, she worked for two years in tax consulting at a Big 4 company in Zurich and, after graduating with a Master's degree, as a trainee lawyer in a large Zurich business law firm.

Delia Amrein is admitted to the bar in Switzerland and is a notary public in the Canton of St.Gallen.

Delia Amrein speaks German, English and French.