[1] Douwen, who played as a midfielder has made five appearances for the Belgium national team.
[3] Dauwen has served as assistant coach for various clubs in Belgium and Saudi Arabia.
In 2022, he was appointed as the assistant to Ivan Vukomanović at the Indian Super League club Kerala Blasters FC.
[4] Under Dauwen, the Blasters won their first game in the 2023 Hero Super Cup against Roundglass Punjab with a score of 3–1 on 8 April 2023.
[5] On 19 May, the Blasters announced a two-year contract extension for Dauwen till 2025 after he led the club in the previous season's Super Cup.