Amateur Smith grew up playing hockey in
Des Moines before moving with his family to
Minnesota when he was 14. He played college hockey for
UMass Lowell of
Hockey East for three seasons while majoring in
chemistry. In his freshman season at UMass, Smith was named to the
All Hockey East Rookie Team after he led the team with 16 goals, 19 assists for a total of 35 points. He also became the first River Hawk rookie since
Scott Wilson in 2011 to score 30 points in a season. On April 21, Smith and Zack Kamrass were awarded the UMass Lowell Hockey Most Valuable Player Award. Smith was also awarded the River Hawks Rookie of the Year. In his sophomore year, Smith was named to the
Hockey East All-Tournament Team and won the River Hawks leading scorer award. In the
2016 Hockey East Men's Ice Hockey Tournament, Smith helped Massachusetts–Lowell beat
Boston University in the Quarterfinals to advance to the Semifinals and eventually the Championship. In his junior year, Smith was named a semi-finalist for the Walter Brown Award as the best American-born college hockey player in New England. The River Hawks won the
2017 Hockey East Men's Ice Hockey Tournament and Smith was named to the All Tournament Team and Tournament MVP. On March 29, 2017, Smith chose to forgo his senior year at UMass and signed as an undrafted free agent by the National Hockey League's
Buffalo Sabres.
Professional Smith made his Sabres debut on April 2, 2017 in a 4–2 loss to the
New York Islanders, in which he also got his first NHL point with an assist on a goal by
Evander Kane. When Smith made his debut, he became one of only two players in league history to have been born in the state of
Iowa, joining goaltender
Scott Clemmensen. Smith played the
2017–18 season with the Sabres
American Hockey League (AHL) affiliate, the
Rochester Americans. In his rookie season with the Americans, Smith was named to the 2018
AHL All-Star Classic on January 4, 2018. On July 16, 2018, Smith signed a one-year, two way contract with the Sabres worth $874,125. Smith began the following season with the
Rochester Americans after being cut from the Sabres training camp. On January 8, 2019, Smith scored his first NHL goal in the second period against the
New Jersey Devils. As a free agent after five seasons within the Sabres organization, Smith was signed to a one-year, two-way contract with the Carolina Hurricanes on July 28, 2021. On August 2, 2022, Smith was signed as a free agent to a one-year, two-way contract with the
New York Rangers. On November 20, 2023, Smith signed a one-year contract with
JYP Jyväskylä of the Finnish
Liiga. In the following
2024–25 season, Smith moved to the
Kontinental Hockey League, in joining
Kazakh based club,
Barys Astana on June 28, 2024. He made just 9 appearances with Barys, going scoreless, before opting to mutually terminate his contract. On January 20, 2025,
Adler Mannheim of the
German Ice Hockey League announced it had signed Smith to a try-out contract. His try-out with Mannheim ended after Smith opted to return to North America and sign a contract for the remainder of the season with the Charlotte Checkers, the primary affiliate to the
Florida Panthers, on January 24, 2025. ==Career statistics==