Early years Maciocia began his professional coaching career in 1993 when he took a job as an assistant coach with the Canadian junior national football team. In 1995, he moved into the ranks of the
CJFL as offensive coordinator of the
St. Leonard Cougars, who won the championship of the league in Maciocia's first year.
Montreal Alouettes In 1998, Maciocia entered the CFL as the running backs coach of the
Montreal Alouettes. In 2001, he became offensive coordinator in Montreal, then took the same position in Edmonton the following season. Maciocia was also the head coach of the 2004 edition of the Canadian junior football team for the eighth
NFL Global Junior Championship.
Edmonton Eskimos Maciocia was announced as the
offensive coordinator for the
Edmonton Eskimos on February 19, 2002. He served in that role for three years where the Eskimos appeared in two
Grey Cup games, including his first championship win in the
91st Grey Cup game. He was appointed as head coach of the Eskimos after the firing of former coach
Tom Higgins following
2004 CFL season. Maciocia became the first Quebec-born head coach in CFL history and the first Canadian head coach of the Eskimos since
Annis Stukus in 1951. In 2005, Maciocia guided the Eskimos to a
championship victory in the
93rd Grey Cup, the thirteenth in franchise history. He was also the first Canadian-born head coach in Eskimos history to win the Grey Cup with the team. The 2006 season was not successful for Maciocia and the Eskimos. The team missed the play-offs for the first time in 34 years, ending a record streak for consecutive post-season appearances among North American professional sports teams. Rumours abounded of Maciocia being on the hotseat after the 2006 campaign, but during the off-season he was surprisingly given a promotion. In addition to coach, Maciocia became director of football operations. As a result, he had a high degree control over decisions on player personnel. Despite Maciocia taking more control, the Eskimos finished with an even worse record in 2007 and once again missed the play-offs. He resigned as head coach while continuing on as head of football operations following the end of the
2008 CFL season, where the Eskimos managed to make the playoffs with a 10–8 record, defeated the
Winnipeg Blue Bombers in the East Semi-Final, and lost the East Final against the
Montreal Alouettes. On July 31, 2010, Maciocia was fired by the Eskimos after the first win in a 1–4 start to the 2010 season.
Montreal Carabins Maciocia served as a volunteer coach for
Collège André-Grasset for the 2010 season helping them to a Quebec junior college (CEGEP) championship. He was later named head coach of the
Montreal Carabins football team of the
Université de Montréal on November 17, 2010. In the
2014, as the Carabins won the
50th Vanier Cup. On their way there, they defeated the
Laval Rouge et Or to win their first
Dunsmore Cup, the
Manitoba Bisons in the
Uteck Bowl and then the
McMaster Marauders in the Vanier Cup final. In the
2015, the Carabins once again returned to the
national title game with Maciocia at the helm, only to be defeated this time by the UBC T-Birds, 16–13.
Montreal Alouettes Maciocia was briefly considered a candidate for the
Montreal Alouettes vacant general manager position in December 2016, following the mutual termination of
Jim Popp's contract. The job instead went to
Kavis Reed. In early January 2020 he was once-again rumoured to be a top-candidate to replace Kavis Reed after the team was sold to Sid Spiegel and Gary Stern. After much speculation, Maciocia was named general manager of the
Montreal Alouettes on January 13, 2020. In his first season as general manager, in
2021, the team finished in third place in the East Division with a 7–7 record and lost the East Semi-Final. After the first four games of the
2022 season, the team's head coach
Khari Jones was fired and replaced by Maciocia. Maciocia finished the year with an 8–6 record and a second-place finished as the Alouettes lost the East Final to the
Toronto Argonauts. In the off-season, he hired
Jason Maas to become the team's head coach. Maas led the team to an 11–7 record and a victory in the
110th Grey Cup, bringing Maciocia his first Grey Cup championship as a general manager. He then signed a four-year contraction extension on December 20, 2023, that would keep him with the Alouettes through to the 2027 season. == CFL GM record ==