Thoma spent his entire college career at the University of Washington.
[1][2][3] On January 15, 2015, Thoma was selected in the second round (24th overall) of the 2015 MLS SuperDraft by the Portland Timbers.
[4] On March 29, he made his debut for USL affiliate club Portland Timbers 2 against Real Monarchs.
[5] Following his release from Portland, Thoma signed with USL side Whitecaps FC 2 on March 3, 2017.
Thoma now works as the Soccer Program Coordinator for Kingsway Christian School in Vancouver, Washington.