Madar was born and raised in the town of Beit Dagan, Israel, to a family of Mizrahi Jewish (Yemenite-Jewish) descent.

[5] On 21 September 2018, he made his debut in a FIBA Champions League qualifying round match against Spirou Charleroi, playing 15 minutes off the bench.

[6] On 3 July 2020, Madar recorded a career-high 28 points, shooting 11-of-17 from the field and 3-of-3 from the line in a 106–105 loss to Maccabi Ashdod.

[7] In the quarter-finals series versus league leaders, Maccabi Tel Aviv, Madar was the leading scorer with 17.3 points while shooting 45% FG and 89% FT.

Partizan ended the 2022–23 season by lifting the ABA League championship trophy, after 3–2 score against Crvena zvezda in the Finals series.

He played for the Celtics in the 2021 NBA summer league, scoring 8 points on 4-6 shooting in 17-minutes at his debut, a 85–83 win against the Atlanta Hawks.

[17] In July 2018, Madar participated at the 2018 FIBA Europe Under-18 Championship Division B with the Israeli Under-18 team, and averaged 11.4 points, 3.3 rebounds, 3 assists, and 1.8 steals per game.