While playing AAA hockey for the Markham Majors in the
Greater Toronto Hockey League, Parekh was selected 19th overall in the 2022
Ontario Hockey League (OHL) draft by the
Saginaw Spirit. He signed with the Spirit on May 19 and made his OHL debut on October 1, in a 10–6 victory over the
Guelph Storm. In his first full OHL season in
2022–23, Parekh recorded 21 goals and 37 points across 50 games, breaking the record for most goals by a 16-year-old defenceman. He was named to the CHL All-Rookie Team and the OHL First All-Rookie Team. The
2023–24 season saw Parekh continue as a prolific scorer and attract considerable notice from commentators and scouts. On January 20, 2024, Parekh tied the Saginaw Spirit club record set by
Patrick McNeill for most goals by a defenseman in a single season, and not long after was selected as one of 40 draft-eligible prospects to attend the 2024
CHL/NHL Top Prospects Game. He was suspended for two games following an incident after a stoppage in play during a game against the
Windsor Spitfires on January 21, 2024. He finished the season with 33 goals and 96 points, becoming only the second defenceman in league history to score at least thirty goals in their first season of
NHL draft eligibility. Following the season, he received the
Max Kaminsky Trophy as OHL defenceman of the year, and finished second in voting for the
Red Tilson Trophy as the OHL's most valuable player, behind
Easton Cowan. As well, he was named to the First All-Star Team. Parekh was ultimately given the
CHL Defenceman of the Year Award as the best defenceman of the three CHL component leagues, and named to the
CHL First All-Star Team. In the postseason, Parekh was a key figure in the Spirit's deep playoff run, but injury caused him to miss the opening game of the team's Western Conference Final series against the
London Knights. He returned thereafter, but
The Hockey News opined that he remained "a little banged up" and did not perform to his former standard. The Knights ultimately defeated the Spirit in six games. Entering the
2024 NHL entry draft, Parekh's strengths such as his skating, strong shot, and puckhandling were applauded, while concerns were raised about his decision making and positioning, drawing comparisons to
Erik Karlsson and
Quinn Hughes. He was drafted ninth overall by the
Calgary Flames, and signed a three-year entry-level contract with the team on July 5, 2024. In the
2024–25 season with the Spirit, Parekh recorded 33 goals and 74 assists. He received his second consecutive First All-Star Team designations from both the OHL and the CHL. Following Saginaw's elimination from the OHL playoffs, he was called up by the Flames. In Calgary's final game of the
2024–25 season on April 17, Parekh made his professional debut, scoring a goal in a 5–1 victory over the
Los Angeles Kings. ==International play==