 In his final season at Georgetown, he captained the team to a 2017 Big East Conference Men's Soccer Tournament championship win, his second with the team.He also played two games for the USL PDL side Burlingame Dragons.Marcinkowski signed a Homegrown Player contract with the MLS side San Jose Earthquakes on December 6, 2017, after spending four years prior to his college career with the team's academy.