Coming out of college, Mitchell turned down an opportunity to play in Uruguay to instead begin his professional career in Ireland playing for
Templeogue in the
Super League while undertaking a
master's degree at
Griffith College. However, he left the team prior to making his debut after being lured to the Netherlands. On 15 October 2021, Mitchell signed with Dutch team
BAL of the
BNXT League. In 22 games during the
2021–22 season, he averaged 16.0 points, 8.2 rebounds and 2.8 assists per game. In June 2022, Mitchell moved to Australia and joined the
Gold Coast Rollers of the
NBL1 North for the rest of the
2022 season. He helped the Rollers win the
NBL1 North championship. In 14 games, he averaged 18.4 points, 8.6 rebounds, 2.7 assists and 1.8 blocks per game. After the Bullets opened the season 0–4, Mitchell was suspended for one game after being dismissed from training following a disagreement with coach
James Duncan about his role in the team's offence. On 19 November 2022, he scored 21 points in a 90–82 loss to the
Cairns Taipans. For the season, he averaged 9.56 points, 4.56 rebounds and 1.3 assists per game. Following the NBL season, Mitchell joined
Śląsk Wrocław of the
Polish Basketball League for the rest of the
2022–23 PLK season. He helped the team reach the championship series, where they lost 3–2. He averaged 5.8 points in 22 games. He averaged five points in 15 games. In April 2024, Mitchell joined the
Ipswich Force for the
2024 NBL1 North season. In 16 games, he averaged 21.44 points, 6.38 rebounds, 2.5 assists and 1.13 steals per game. On 25 September 2024, Mitchell signed with
Manchester Basketball of the
Super League Basketball for the
2024–25 season. In 33 games, he averaged 14.8 points, 5.8 rebounds, 2.5 assists and 1.0 steals per game. On 15 May 2025, Mitchell signed a two-year deal with the
South East Melbourne Phoenix. In 30 games during the
2025–26 NBL season, he averaged 4.3 points and 2.0 rebounds per game. The second year of his two-year deal was not exercised by the Phoenix following the season. On 3 April 2026, Mitchell signed with Manchester Basketball just prior to the playoffs of the
2025–26 Super League Basketball season. ==National team==