Porter grew up in nearby Mississauga, Ontario and attended John Fraser Secondary School, St. Joan of Arc Catholic Secondary School and Burnaby Central Secondary School, and played club soccer for the Erin Mills Soccer Club and the Mississauga Falcons before joining the Vancouver Whitecaps FC Academy program in 2007.

He appeared in friendly games with the Residency team during tours of Germany and played in the prestigious Dallas Cup in 2007. Porter also played with the Vancouver Whitecaps Residency team in its inaugural season in the USL Premier Development League in 2008.

Porter returned to the Vancouver Whitecaps in mid-2010, and made his debut as a substitute on October 2, 2010 in Vancouver’s last game of the 2010 USSFD2 regular season, a 2–2 tie with the Portland Timbers. Porter delivered the cross for the equalizing goal in the match.

He then signed with FC Edmonton of the North American Soccer League in April 2011. He made his debut for Edmonton on April 27, 2011, in the team’s 2011 Canadian Championship match with Toronto FC. Porter was under contract with FC Edmonton for the 2012 season.

After an extended trial period, Porter signed with Major League Soccer’s D.C. United on February 23, 2013. Since joining United, he has become a regular starter. On May 19, 2013, Porter scored his first goal for United, off a cross from Chris Pontius against Sporting Kansas City. The match ended in a 1–1 draw. Porter’s option was declined by DC United at the close of the 2014 season. In total, he played 32 games, scored 3 goals, and made one assist for DC in MLS.

Porter made his senior team debut on January 26, 2013 in a friendly against Denmark as a second half sub for Russell Teibert, the game ended as a 4–0 defeat. On July 6 Porter was named to the 2013 CONCACAF Gold Cup roster as a replacement for Nana Attakora who sustained an injury. Porter was not initially supposed to be an active member of the roster, but three days later Randy Edwini-Bonsu was forced to leave the Gold Cup due to injury and Simeon Jackson due to a club commitment which forced him to join the team before its second match against Mexico.

Porter signed with the Atlanta Silverbacks of the NASL on March 3, 2015. He made his debut against Indy Eleven in Atlanta’s season opener on April 4.

In January 2016 Porter made his return to Canada, signing with Ottawa Fury FC. In December 2016, the Fury announced that Porter would not return to the team as the club moved to USL in 2017.

In March 2017, Porter signed with the Tampa Bay Rowdies in the USL.

After a two-week trial, Porter signed for a second spell with the Ottawa Fury on 8 February 2018. He was released by the club in July 2018.

On July 13, 2018 Porter signed for a second spell with the Tampa Bay Rowdies.

On November 29, 2018 Porter signed with York9 of the Canadian Premier League. He made his debut for York9 in their inaugural match against Forge FC on April 27, 2019.