Fitzgerald has had a relatively short career within karting, having only begun racing in late 2019 in his native Ireland. He moved to competing in British competitions in 2021 such as the British Kart Championships, Little Green Man series and the Kartmasters Grand Prix, all in the Senior X30 class.

The Irish driver’s first single-seater racing campaign was in British F4 last year for Argenti Motorsport and came 14th in the standings with a best finish of fifth. He also did two Italian F4 rounds with R-ace GP and finished eighth in his best race.