Wiśnicki started professional karting racing in 2014, at 11 years old. During that time, he came in second in the Rotax Max Challenge Central-Eastern Europe in the Mini Max category.[4] He came in 21st during the 2016 CIK-FIA Karting Academy Trophy. Wiśnicki competed in more Rotax Max Challenges from 2015 to 2019 but did not win any titles.
Formula 4
2020
Wiśnicki made his single-seater debut during the 2020 Italian F4 Championship with Jenzer Motorsport.[5] Wiśnicki was unable to score points throughout most of his campaign, until the round at Monza where he finished ninth on the road during the first race,[6] before being promoted to eighth as Gabriele Minì was penalised.[7] Wiśnicki added another points finish with sixth place in the second race, but was ultimately unable to complete the season.[8][9] He finished the championship in 19th with 12 points.[10]
2021
Wiśnicki remained with Jenzer Motorsport for the 2021 Italian F4 Championship.[11] His first point came at the second race in Vallelunga, before adding three more points finishes which including a high of seventh.[12] Wiśnicki ended the campaign 23rd in the championship, scoring 15 points.[13]
Formula Regional
For 2022, Wiśnicki made the step up to the 2022 Formula Regional European Championship with KIC Motorsport, partnering Francesco Braschi and Santiago Ramos.[14][15] In his first weekend at Monza, he finished 24th and 21st, the latter result his best finish in the championship.[16] For the second round in Imola, Patrik Pasma stood in for Wiśnicki as he was to attend his school commitments.[17] However, he returned to the next round in Monaco.[18] Wiśnicki failed to score any points throughout the season and ended 35th in the standings.[19]
FIA Formula 3 Championship
2023
For 2023, Wiśnicki was announced to be moving up to the FIA Formula 3 Championship with PHM Racing by Charouz, partnering Sophia Flörsch and Roberto Faria.[20] During the first four rounds, Wiśnicki achieved a best finish of 18th place at Melbourne.[21] However, he would be replaced by GB3 racer McKenzy Cresswell starting from the and Spielberg.[22] In a Facebook post on 1 July, Wiśnicki stated he decided to "suspend" his involvement with PHM Racing, citing negligence by the team, such as lack of cooperation with the drivers regarding car setups and the firing of an engineer who was "the only one knowing how to and willing to work".[23] By the end of the season, Wiśnicki was ranked 34th in the overall standings.[24]
2024
In January 2024, it was announced that Wiśnicki would be returning to FIA Formula 3 for the 2024 season, partnering Callum Voisin and Joseph Loake at the newly rebranded Rodin Motorsport team.[25] It would prove to be a difficult year for the Pole, being notably outpaced by teammates Joseph Loake and Callum Voisin and frequently languishing at the back of the grid. However, his big break came during a damp Silverstone feature race, where a bold decision to stay out on dry tyres proved right, as he vaulted up the leaderboard in the closing laps to finish in fifth place – his only points finish of the season.[26] His result eventually placed him 23rd in the standings with 10 points, ahead of Loake but considerably behind teammate Voisin.[27]