Lemoine spent time with De Anza Force before joining the San Jose Earthquakes academy.
[3] Lemoine signed a contract with the Dynamo's USL Championship affiliate, Rio Grande Valley FC, ahead of the 2019 season.
[3] He made his professional debut on March 23, coming on as a substitute in a 2–2 draw with El Paso Locomotive.
Lemoine ended the 2020 season with 11 appearances, all as a substitute, as Houston finished last in the Western Conference, missing out on the playoffs.
[12] On April 26, after not making Oakland's match day squad during the first 9 games of the season, the Dynamo recalled Lemoine and waived him.