In four seasons with the Winnipeg Blue Bombers (2010-13), Goltz completed 88-of-160 pass attempts for 961 yards with three touchdowns and seven interceptions. He also rushed for 295 yards on 49 carries with nine touchdowns.
Goltz saw his role with the team expand during the season as he dressed as the third-string quarterback in 11 games and saw action in three of those games running the wildcat offence implemented by offensive coordinator Gary Crowton who raved about his skill set. Goltz rushed eight times for 43 yards and a touchdown during the season, while also completing four of eight passes for 39 yards. His rushing major was the last ever touchdown scored at Canad Inns Stadium.
Goltz was released following training camp but returned to Winnipeg in July after Joey Elliott suffered a season-ending injury in week three. He spent the remainder of the season as the team’s third-string quarterback and saw action on Sep 24/11 against the Toronto Argonauts following injuries to both Buck Pierce and Alex Brink. Goltz completed three of six passes for 36 yards and threw an 18-yard touchdown strike to Clarence Denmark who dove to make the catch in the endzone.
Justin was drafted in the first round (third overall) of the 2010 UFL Draft by the Sacramento Mountain Lions. He was among the team's final cuts in training camp.
Justin attended training camp with the Detroit Lions.
Goltz was a three-year starter at Occidental College and led his team to an undefeated record as a senior. He completed 66% of his passes for 1,832 yards and added 599 yards rushing that year while also throwing 11 touchdowns against just three interceptions and led the Tigers to their third SCIAC championship in four seasons. Goltz was named the 2008 Southern California Intercollegiate Athletic Conference Offensive Player of the Year.