A youth product of Team Challenger FC, Zawadzki was also part of the Columbus Crew academy between 2015 and 2018, serving as captain for his final two years.
During his time with the Hoyas, he made 78 total appearances and scored 4 goals,[4] winning the 2019 NCAA national championship and three Big East tournaments.
[10] In January 2022, Zawadzki was announced as a homegrown player signing by Columbus Crew,[2] and played the majority of his first season with the reserve team,[11] helping them win the inaugural league championship.
[14] After going through a midseason position change to center-back due to injuries, Zawadzki would then appear in all but one of the club's remaining games while rotating between midfield and center-back,[15] scoring in a 5–1 win versus Loudoun United FC in the U.S. Open Cup, a 3–2 win versus the Colorado Rapids,[16] and another second-half stoppage time equalizer, this time against New York City FC.
[20] Zawadzki made his debut for the senior United States national team on January 20, 2024, in a friendly against Slovenia.