Fittipaldi Jr. belongs to the most decorated racing family in Brazilian motorsport history. His father Emerson Fittipaldi won the Formula One World Championship in 1972 and 1974 and later added two Indianapolis 500 victories. His uncle Wilson Fittipaldi Jr. raced in Formula One in the early 1970s, and his cousins Pietro and Enzo Fittipaldi are also professional racing drivers. By a generational quirk, Pietro and Enzo — children of Wilson Jr. — are older than their uncle Emerson Jr. despite being his nephews. His grandfather Wilson Fittipaldi Sr. was a motorsport journalist and radio commentator who helped foster the family's deep connection to the sport.
Fittipaldi Jr. began single-seater racing in the 2021 F4 Danish Championship with FSP Racing, claiming his first victory in car racing at Jyllandsringen during only his third event. He took a second win at Padborg Park and finished the season third overall with eight podiums, having also scored a maiden pole position.
In 2022 he moved to the Italian F4 Championship with Van Amersfoort Racing for a full season, also contesting selected rounds of the ADAC Formula 4 Championship. He took four points over the campaign and finished twenty-third in the championship standings. That September he participated in the FIA Formula 3 post-season test with Charouz Racing System.
Fittipaldi Jr. stepped up to the Formula Regional European Championship in 2023 with Saintéloc Racing. The season was marked by an incident at Spa-Francorchamps in July, when a multi-car accident triggered by Tim Tramnitz at Kemmel-Raidillon resulted in the tragic death of Dilano van 't Hoff. Fittipaldi was among those involved in the crash. He also contested the Eurocup-3 during the back half of 2023, joining GRS Team mid-season and scoring a point at Barcelona.
For 2024, he raced a full Eurocup-3 season with MP Motorsport while also contesting the Formula Regional Middle East Championship with the same team. His Eurocup-3 campaign yielded a fifth-place finish in the championship. He remained in Eurocup-3 with MP Motorsport for 2025, building further experience in a competitive regional series.
For 2026, Fittipaldi Jr. graduated to the FIA Formula 2 Championship with AIX Racing, becoming one of the youngest drivers from a storied lineage to make the step to Formula One's primary feeder series. He was among a select group of drivers to advance directly from Formula Regional to Formula 2, alongside Joshua Dürksen and Andrea Kimi Antonelli.
From 2020 to 2021, Fittipaldi Jr. was a member of the Sauber Academy. In October 2022 he was named a finalist in the Ferrari Driver Academy's Scouting World Final, underscoring the broader motorsport world's recognition of his potential.