[3] Smith attended her first international assignment in March 2014, after her addition to the U.S. National Team, at the 2014 City of Jesolo Trophy in Venice, Italy.

On March 4, Smith won the gold medal ahead of Japanese Olympian Asuka Teramoto at the American Cup in Newark, New Jersey.

[11] On August 20, Smith won the 2017 U.S. National Gymnastics Championships all-around title with a two-day combined score of 115.250, over three points ahead of silver medalist Jordan Chiles.

On September 20, Smith was selected to represent the United States at the 2017 Artistic Gymnastics World Championships in Montreal alongside Carey, Locklear, and Morgan Hurd.

[13][14] During qualifications Smith qualified to the all-around final in second place behind Mai Murakami of Japan despite an uncharacteristic fall on the balance beam.

[22] Marred by lingering torn ligaments in her ankle, broken toes, and mental struggles at the 2018 U.S Championships in August, Smith finished 10th in the all-around, 8th on vault, 8th on beam, tied for 11th on bars, and 11th on floor over the cumulative two day competition.

During the competition she placed fifth in the all-around, third on balance beam behind Kara Eaker and Riley McCusker, fourth on vault and floor exercise, and eighth on uneven bars.

[23] The following day she was named to the team to compete at the 2018 World Championships alongside Biles, Morgan Hurd, McCusker, Grace McCallum, and Eaker.

In July, Smith confirmed on Instagram that she had decided to join the Oklahoma Sooners for the 2019–2020 season,[32] presumably ending her elite career as she was not on the roster to compete at the upcoming U.S.

[33] In July, Smith announced that she would be joining the Oklahoma Sooners women's gymnastics team for the 2019–2020 season, instead of deferring for a year like she had originally planned.

[32] She made her NCAA debut at the Collegiate Challenge where she competed the all-around and helped Oklahoma finish first, recording the highest score on balance beam for her team.

[34] On February 6, in a meet against Texas Women's University, Smith earned her first collegiate perfect ten on the balance beam.