[1][2] Petre Bădeanțu was born on 12 March 1929 in Timișoara, Romania, growing up and starting to play football as a child in the Mehala neighborhood.
[1][2] He made his Divizia A debut on 25 August 1946, aged 17 in Locomotiva's 4–3 away victory over Juventus București, scoring 16 goals until the end of the season which helped the team finish on the third place.
[1][2] In the following season he scored a personal record of 22 goals which made him the third goalscorer of the league, after Ladislau Bonyhádi (49) and Bazil Marian (32), the team finishing on the second place and also reached the 1948 Cupa României final where coach Balázs Hoksary used Bădeanțu all the minutes in the eventual 3–2 loss in front of ITA Arad.
[1][2][5] For the second half of 1953, Bădeanțu went back home in Timișoara to play again for Locomotiva, the highlights of this second spell being 10 goals scored in the 1954 season when they finished on the fourth place, however in 1956 the team relegated from Divizia A, his last match in the competition taking place on 11 November 1956, a 6–0 away loss against his former side, CCA, earning a total of 218 league appearances with 99 goals scored.
[2] Petre Bădeanțu played one game at international level for Romania, in a 1948 Balkan Cup match when coach Colea Vâlcov used him all the minutes against Albania which ended with a 1–0 loss.