Alex was born in Canada and began his tap and jazz training at the age of seven. In 2004, he became the first Canadian to win the Prix de Lausanne competition in Switzerland, and later that year joined the American Ballet Theatre Studio Company. In 2005, Alex danced briefly with American Ballet Theatre before joining Miami City Ballet. In 2007, Alex was promoted to the rank of soloist at MCB. Alex’s repertoire of leading roles includes but not limited to: Balanchine’s “Symphony In Three Movements”, “The Nutcracker”, Twyla Tharp’s “Push Comes to Shove”, Mark Morris “Silhouettes”, Edward Villela’s “Don Quxiote”, Paul Taylor’s “Funny Papers”, Bournonville’s “Conservatory” and “La Fille Mal Gardee”.
In 2009, Alex auditioned for the FOX dance series, "So You Think You Can Dance." He breezed through Vegas week and was chosen for the final Top 20. In 2010, Alex made the Top 10 contestants competing for the title of America's favorite dancer. Both pieces Alex danced on SYTYCD choreographed by Mia Michaels and Tabatha & Napoleon won Emmy Awards.
He continued dancing on TV for NBC's new TV series "Smash" directed by Steven Spielberg. Alex also appeared on "The Ellen Show", "The Voice" danced with LMFAO and was asked to re-join "So You Think You Can Dance" as an All-Star. He auditioned for American Idol, making it to the semi final "Hollywood" rounds.
His Broadway debut, playing the role of "Sniper" in the Original Broadway Cast of the Disney musical "Newsies" won two Tony Awards, received six Tony nominations and an Oscar nomination. Alex also won the ACCA Award for Outstanding Original Chorus. In 2012, Alex returned to SYTYCD as an All Star, and has since worked on Dancing With The Stars, Choreographed and Starred in the Buick Car Launch in China, SYTYCD Vietnam, SYTYCD China, Glee, ABC DisneyWorld Christmas Parade, the 85th Academy Awards, the Microsoft "Surface" commercial and the McDonald's Fish McBites commercial.
Most recently, Alex starred in the smash movie “The Greatest Showman” with Hugh Jackman and Zac Efron.