He has previously played in MLB for the Los Angeles Dodgers, Oakland Athletics, and Baltimore Orioles.

[2] He was named to the Rawlings All-America team, and was a Baseball America Third-team All-American and State Player of the Year.

[3][4] The Los Angeles Dodgers selected Coulombe in the 17th round of the 2008 Major League Baseball Draft, but he did not sign.

[7] He briefly considered giving up baseball but chose to enroll at Texas Tech University for his junior season.

[3] He suffered a torn ulnar collateral ligament in his pitching elbow on March 11, costing him the rest of the season.

[1] He played with the rookie–level Ogden Raptors and Single–A Great Lakes Loons in 2012 and spent all of 2013 with the High–A Rancho Cucamonga Quakes of the California League, where he was 4–2 with a 4.05 earned run average (ERA) in 54 appearances.

[26] He made 14 appearances for the Triple–A San Antonio Missions, logging a 4.15 ERA with 18 strikeouts in 13.0 innings of work.

[27] On August 31, 2019, Coulombe signed a minor league contract to return to the New York Yankees organization.

[31] That day, Coulombe threw two shutout innings of relief against the Kansas City Royals in his first major league appearance since 2018.

[36] On April 4, 2022, Coulombe had his contract selected by the Twins after making the Opening Day roster for the first time in his career.

[39] On October 20, Coulombe was removed from the 40-man roster and sent outright to the Triple–A St. Paul Saints; he would subsequently elect free agency.

[42][43] He earned his first career save on July 16 against the Miami Marlins, surrendering a run on two hits in 2⁄3 of an inning to seal the 5–4 victory.

[45] On June 19, 2024, it was announced that Coulombe had undergone surgery to remove bone chips from his left elbow.

[47] Coulombe made 33 total appearances for Baltimore, compiling a 2.12 ERA with 32 strikeouts across 29+2⁄3 innings pitched.

He was the flight engineer and top turret gunner for a B-17 Flying Fortress named Ye Olde Pub when it was nearly shot down on December 20, 1943.

Bertrand Coulombe posthumously received the Silver Star for the events of that incident which have been recorded in a New York Times and International Best Seller book entitled, A Higher Call by Adam Makos.