BILJANA SIMEUNOVIĆ was born in Bijeljina, Bosnia and Herzegovina in 1960. She graduated from Sarajevo University Faculty of Law in 1987 and passed the Bar exam in 1990. She began her professional career by working in the economy sector in 1984 and, in the period from 1988 to July 1996, she worked as an Intern, Expert Associate and Judge at Bijeljina Municipal Court. From July 1996 to February 2001, she worked as a Lawyer in a Law Office in Bijeljina and, from February 2001 to December 2003, she worked as a Secretary in the Government of Republika Srpska. She was appointed Prosecutor of the Prosecutor’s Office of Bosnia and Herzegovina on 1 December 2003.

Ms Simeunović was elected for the first time as a Member of the High Judicial and Prosecutorial Council of Bosnia and Herzegovina by prosecutors of the Prosecutor’s Office of Bosnia and Herzegovina on 2 November 2008 to a four-year mandate i.e. until November 2012. The prosecutors of the Prosecutor's Office of Bosnia and Herzegovina elected Ms Simeunović again as a member of the High Judicial and Prosecutorial Council of Bosnia and Herzegovina in November 2020.

At the session of the HJPC BiH held on 10-11 February 2021, she was elected Vice President of the HJPC BiH until 07.09.2023.

She attended numerous seminars and conferences in the country and abroad.