[3] In 2019 at age 18, Kundananji signed her first professional contract abroad with BIIK Kazygurt in Kazakhstan[4][3] and helped the team win back-to-back league championships in 2019 and 2020.

[5] Kundananji signed with SD Eibar in the top-tier Spanish league Primera Iberdrola for the 2021–22 season.

[5] On 13 February 2024, it was announced that Kundananji had signed with Bay FC for a women's world record transfer fee of £625,000.

"[14] On 6 July 2022, Kundananji, and three other teammates, including striker Barbra Banda, were ruled ineligible to compete for Zambia in the World Cup-qualifying tournament, Africa Cup of Nations, after a gender verification test found that their natural testosterone levels were above those allowed by the Confederation of African Football, which had stricter gender verification rules than the Olympics.

[16] On 1 July 2023, Kundananji scored a goal and provided an assist in Zambia's 3–3 draw against #20 FIFA-ranked Switzerland.

[17] Two days later she was named to Zambia's squad for the 2023 FIFA Women's World Cup in New Zealand and Australia.