After graduation, he became a video coordinator with the San Antonio Spurs, and a year later entered the college coaching ranks taking on an assistant role with Texas under Rick Barnes.
When Sports Illustrated writer Alexander Wolff decided to purchase an ABA franchise, the Vermont Frost Heaves, he put the naming of the head coach to a vote by the fans.
Heading back abroad, Voigt spent one season as an assistant coach for the Shanxi Brave Dragons of the Chinese Basketball Association.
Voigt was then selected to lead the Nigerian national team at AfroBasket 2015, with Nigeria winning its first title, and automatic qualification to the 2016 Summer Olympics.
[6] In February 2020, he was also named head coach of German Bundesliga side Telekom Baskets Bonn[7] and stayed for the remainder of the 2019–20 season.