In 2016 Frederick switched to formula racing at the age of fourteen, where he competed in the F1600 Championship Series with Team Pelfrey.

[12][13] With 240 points he finished fourth in the standings behind Oliver Askew, Rinus VeeKay and Parker Thompson, the highest driver not to win a race.

At the end of the season, the American drove for the first time in Europe for two Euroformula Open race weekends with RP Motorsport.

[39][40] During the Austrian round, Frederick claimed his first F3 points after multiple penalties promoted him to ninth place in Race 1.

On lap 11, he made a late dive on Juan Manuel Correa which spun both around, and Frederick retired on the spot.

[42] It was later discovered that Frederick suffered a fracture dislocation in his left thumb, causing him to miss Race 3.

[49] Frederick switched to Hitech Grand Prix for 2022, partnering Isack Hadjar and former BRDC F3 teammate Nazim Azman.

[53] Frederick improved to his best F3 finish in Imola, ending in seventh place during the feature race.

During the feature race, Frederick fought over Roman Staněk over fifth place, in which it ended in tears for the American as he sustained a puncture following contact.

[60] Frederick's form dipped during the next three rounds, failing to even fight near the points-paying positions thanks to poor qualifying sessions.

[63][64] Frederick moved to ART Grand Prix for his third Formula 3 season in 2023, partnering single-seater champions Grégoire Saucy and Nikola Tsolov.

[65] Frederick started his season in Bahrain with sixth in qualifying, but was set back by contact in which he sustained a puncture during the sprint race.

[67] The feature race was not so fortunate for him, as he crashed into teammate Tsolov under the safety car, and Frederick received a ten-place grid penalty.

[73] In October 2023, Frederick tested an Indy NXT car at the Indianapolis Motor Speedway with HMD Motorsports.

[74] A month later, Frederick partook in the Super Formula Lights post-season test with B-Max Racing at Okayama International Circuit.

Frederick originates from Potomac in Maryland, and his hero is four-time Formula One World champion Sebastian Vettel.