College career Giummarra began playing at the
college level in 1994 with the
UAB Blazers where in his debut season was named the newcomer of the year and first-team selection. In his sophomore season, he assisted the team in securing the
Conference USA title and for the second consecutive season was named to the first-team selection. Throughout his tenure with UAB, he finished as the top goal scorer in both seasons. In 1996, he was named to the Umbro Select team which featured all-stars from across all colleges. He would ultimately secure a permanent deal with the club and appear in 6 matches in his debut season.
Indoor career In the winter of 1996, he played at the
indoor level in the
National Professional Soccer League by signing with the expansion franchise
Toronto Shooting Stars. He would make his debut for the club on October 18, 1996, against
St. Louis Ambush. His time in Toronto was short-lived as the organization experienced several financial issues resulting in Giummarra not showing up for a match against
Edmonton Drillers. He was ultimately traded to
Philadelphia KiXX when a change occurred in the coaching staff. For the remainder of the 1996-97 season, he was traded to
St. Louis Ambush in exchange for a second-round draft choice. He helped St. Louis clinch a postseason berth by winning their division and reaching the conference finals. In total, he appeared in 11 matches and recorded 2 goals. After the conclusion of the season, he was released from his contract. Following his brief stint abroad in England, he returned to his former club Montreal Impact where he played with the club's indoor team for the initial portion of the 1997-98 indoor season. His second stint with Montreal was rather short as he was waived by the team on January 16, 1998. His release stemmed from the team being re-organization by head coach Johan Arnio. He assisted in securing a postseason berth for the club. He signed a multi-year deal with Harrisburg on October 13, 1998. Though he extended his contract with Harrisburg he was still traded to league rivals
Florida ThunderCats in exchange for Marcello Fontana, Leonel Pernia, and for cash consideration on February 26, 1999. He played his final indoor season with expansion side
Toronto ThunderHawks for the 2000-01 indoor season. Throughout the season, he appeared in 31 matches and recorded 15 goals for Toronto. He would make his debut for the club on September 2, 1997, against
Scarborough F.C. In total, he would appear in three matches for Darlington. He made his debut on June 7, 1998, against
Long Island Rough Riders. In his single season with Toronto, he appeared in 5 matches. In his debut season with the Vaughan-based club, he was selected to the CPSL All-Star roster against the National Training Centre squad. After two seasons with York Region, he was traded to
Toronto Olympians for the 2001 season. During his tenure with the Olympians, he was selected twice to the all-star team which faced the
Morocco U-23 and Portuguese side
C.S. Marítimo. In 2002, he signed with league rivals
Vaughan Sun Devils. He re-signed with Vaughan for the 2003 season where the club reached the
CPSL Championship final. Following his two-year tenure with Vaughan, he moved on to play with
Toronto Croatia in 2004. His stint with Croatia was short-lived as he played the remainder of the season with the
Brampton Hitmen.
Amateur level In 2008, he won the Masters Eastern National Club Championship with Markham Lightning men's over-35 soccer team. He helped Markham successfully defend their title the following season. == Managerial career ==