Jadranka Ruk Andreis spent more than 35 years in legal profession, including internship on Municipal Court in Zagreb. In addition to the bar exam, she also has passed a notary public exam.

In her long legal career, Jadranka Ruk Andreis has been dealing with domestic and foreign legal and natural persons in various court and administrative proceedings. She participated in preparing various legal frameworks in almost all segments of law, especially civil law and real estate.