Amarikwa was drafted in the third round of the 2009 MLS SuperDraft by San Jose Earthquakes. He made his professional debut in San Jose's first game of the 2009 MLS season against the New England Revolution and scored his first MLS goal on October 7 against FC Dallas. After 25 games for San Jose and one goal, he was traded to Colorado Rapids in April 2010 in exchange for a second-round selection in the 2012 MLS SuperDraft. Amarikwa made 31 league appearances for Colorado scoring three goals and was a member of the side that captured the 2010 MLS Cup. Amarikwa was waived by Colorado in June 2012. Shortly thereafter his rights were claimed through waivers by the New York Red Bulls. He spent two weeks training with New York but never signed; instead, New York traded Amarikwa to Toronto FC for a conditional draft pick on July 21. He made his league debut for Toronto in a 2–0 home defeat to Houston Dynamo on July 28. Amarikwa scored his first goal for Toronto in CONCACAF Champions League play against Santos Laguna in a 3–1 home defeat. In February 2013, Amarikwa was acquired by Chicago Fire in exchange for a first round selection in the 2014 MLS Supplemental Draft. In June 2015, Chicago Fire traded Amarikwa to San Jose Earthquakes in exchange for defender Ty Harden. He scored two goals in four minutes in his second Earthquakes appearance during the California Clásico against the LA Galaxy. Amarikwa was sidelined for the rest of the 2016 season and for the first half of the 2017 season after suffering a knee injury on September 24, 2016, against Sporting Kansas City. He made his return to the team on July 14, 2017, in a friendly match against Eintracht Frankfurt, scoring a penalty kick twelve minutes after substituting in for Simon Dawkins and securing San Jose's 4–1 victory. On October 14, 2017, he was nominated for the MLS Comeback Player of the Year Award. On August 8, 2018, Amarikwa was traded by the Earthquakes to Montreal Impact in exchange for Dominic Oduro. He made his debut for Montreal on August 11, 2018, in a game against Real Salt Lake. On March 1, 2019, after speculation and Amarikwa appearing at D.C. United practices, Quincy Amarikwa signed with D.C. United. Amarikwa scored his first goal for D.C. United in a friendly against Real Betis on May 22, 2019. Amarikwa then scored his first D.C. United MLS goal against the New England Revolution on July 12, 2019. His goal equalized the game 2-2. His contract with D.C. United ran out after the 2019 season.
Personal life
He and Ross LaBauex both co-own a brand called Perfect Soccer.
Honors
Colorado Rapids
Major League Soccer Eastern Conference Playoff Championship :2010
