[2][1] He co-founded and served as Chief Financial Officer of OneWest.net, a regional internet service provider, and later served as the Chief Operating Officer for St. John’s Medical Center in Jackson and as Executive Director of Jackson Hole Lacrosse.

[5] Trauner was credited with replacing the district's unpopular Superintendent with Pam Shea under whose leadership saw student test scores rise and teacher salaries go up.

[5][8] Trauner was the Chair of the Aspens Pines Water and Sewer District and his term ended in November 2018.

[12] Additionally, Trauner also serves as Chair of the Charture Institute, a Jackson-based conservation think-tank founded in 2002.

Trauner won the Democratic primary unopposed to run against incumbent United States Senator John Barrasso in the 2018 election.

"[24] He considers "opportunity and inequality" to be the biggest issues facing the nation,[25] and has advocated for the diversification of Wyoming's economy.