Hoeing signed with the Marlins and made his professional debut with the Batavia Muckdogs, going 0–2 with a 4.43 ERA over 22+1⁄3 innings. He did not play a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic.[6] In 2021, he played with the Beloit Snappers with whom he started 22 games and went 7–6 with a 4.83 ERA and 96 strikeouts over 121 innings.[7] He opened the 2022 season with the Pensacola Blue Wahoos and was promoted to the Jacksonville Jumbo Shrimp in early May.[8]
On August 20, 2022, the Marlins selected Hoeing's contract and promoted him to the major leagues to make his MLB debut that night as the starting pitcher versus the Los Angeles Dodgers at Dodger Stadium.[9] He pitched three innings in which he gave up seven earned runs on eight hits (two home runs), one walk, and two strikeouts as the Marlins fell 7–0.[10] In his rookie campaign, he made 8 appearances for Miami, struggling to a 12.08 ERA with 6 strikeouts in 12.2 innings pitched. On November 8, Hoeing was removed from the 40-man roster and sent outright to Triple-A.[11]
Hoeing began the 2023 season with Triple-A Jacksonville, pitching in 4 games (starting 3) and logging a 2.08 ERA with 20 strikeouts in 17.1 innings of work. On April 25, 2023, he had his contract selected to the active roster.[12]