De John has made 125 career appearances overseas, recording seven goals and two assists as a center back over the past six seasons. He began his career overseas in Finland with Ekenäs IF before moving on to Turun Palloseura (TPS), where he competed in the top flight in the country. While with TPS, De John appeared in 34 matches across all competitions in 2014. In 2015, De John moved to Norwegian club IK Start, appearing in 41 matches over two seasons in Eliteserien, the top tier of the Norwegian soccer system. De John moved to Dalkurd FF in Sweden in 2017, where he appeared in 20 matches while helping the club reach promotion to the Allsvenskan, the country’s top league, for the 2018 campaign. Overall, he made 43 appearances in all competitions for Dalkurd. In the U.S., De John played college soccer for Old Dominion University in Norfolk, Virginia, before joining Central Spartans in the USL Premier Development League.