[4] She lost on her professional debut suffering a points decision defeat to Nahed Kharchi in a six-round contest in Drap, France, on 29 September 2018.

[7] Taking advantage of a change in rules that allowed professionals to take part in previously amateur-only competitions, Janićijević competed at the 2022 IBA Women's World Boxing Championships in Istanbul, Turkey in May 2022, going out in the light-welterweight quarter-finals to the eventual gold medalist, Ireland's Amy Broadhurst.

[9][4] Competing in the welterweight category, she beat Shahla Allahverdiyeva from Azerbaijan by third-round stoppage in the quarter-finals[10] before losing to Germany's Stefanie Von Berge in the final four.

[12] At the 2023 IBA Women's World Boxing Championships in New Delhi, India, Janićijević lost in the light-welterweight category round of 16 to Uzbekistan's Khadichabonu Abdullaeva.

[13][4] Janićijević looked set to get an opportunity to become a professional world champion when the IBF ordered negotiations to take place between her and Brazil's Beatriz Ferreira to fight for the female lightweight title vacated by Katie Taylor.