Caputi was drafted by the Mississauga IceDogs of the Ontario Hockey League in the 2nd round, 37th overall, during the 2004 OHL Priority Selection.

Caputi played in his first career OHL game on October 8, 2004, as he was held to no points in a 6–4 win over the Barrie Colts.

On November 14, Caputi scored his first career OHL goal against Daren Machesney of the Brampton Battalion in a 4–1 loss.

Caputi saw little playing time during the 2005–06 season, and in 32 games was held to just three goals as the IceDogs failed to qualify for the post-season.

On September 24, 2006, Caputi earned his first career multi-point OHL game, as he had a goal and an assist in 6-2 win over the Toronto St. Michael's Majors.

On December 10, Caputi scored a goal and added three assists, earning his first career four-point game, in a 11–5 IceDogs victory over the Oshawa Generals.

On March 23, Caputi played in his first career OHL post-season game, as he scored a goal against Sebastian Dahm and added an assist in a 5–4 loss to the Sudbury Wolves.

On December 29, Caputi earned another hat-trick, while adding two assists for a career high five points, in a 6–5 overtime win over the Guelph Storm.

On April 11, Caputi earned his first career playoff hat-trick, scoring three goals in a 8–3 win over the Oshawa Generals.

On April 23, Caputi played in his first professional hockey game, as he was held to no points in a 3–2 overtime loss to the Hershey Bears.

In his next game on April 25 against the Bears, Caputi scored his first career AHL goal against Frederic Cassivi while adding an assist in a 7–3 victory.

On June 7, Caputi scored his first career goal in the Calder Cup finals, as the Penguins defeated the Chicago Wolves 5–1.

On February 17, Caputi scored two goals and added two assists for a career-high four points in a 9–2 win over the Albany River Rats.

On March 2, 2010, Pittsburgh traded Caputi and Martin Skoula to the Toronto Maple Leafs for Alexei Ponikarovsky.

On March 4, he appeared in his first game as a member of the Maple Leafs, as he earned an assist in 3–2 shootout loss to the Boston Bruins.

[2] The rebuilding Storm struggled in the 2015-16 season, and Stewart resigned as head coach on December 7 after a 2–24–1 record in their first 27 games.

The team was in the eighth and final playoff position in the Eastern Conference, however, the post-season was cancelled due to the COVID-19 pandemic.

In his first season as head coach, Caputi led the Frontenacs to a 41–22–5 record, earning 87 points and third place in the Eastern Conference.

The rebuilding Frontenacs struggled in the 2022-23 season, as the club missed the playoffs with a 27-38-3 record, earning 57 points and fifth place in the East Division.