Samour served as a deputy district attorney in Denver, Colorado, for ten years. He also previously practiced law with the firm of Holland & Hart. He began his legal career serving for one year as a law clerk for former Judge Robert Hugh McWilliams Jr. of the United States Court of Appeals for the Tenth Circuit. He was appointed to the court in 2006 and took office in 2007. Samour was retained to the Eighteenth Judicial District Court for a six-year term, winning 62.18 percent of the vote.[4]
Service on the Colorado Supreme Court
On May 31, 2018 Governor John Hickenlooper appointed Samour as an associate justice on the Colorado Supreme Court.[5]