Undrafted by MLS, Conrad had an unsuccessful trial with the Los Angeles Galaxy. However, the Galaxy coaching staff recommended he play for one of their affiliated lower division teams. Consequently, Conrad contacted the now-defunct San Diego Flash of the A-League which gave him a contract. In 1999, Brian Quinn became the head coach of the San Jose Clash. When Quinn began searching for an additional defender and goalkeeper for the Clash, Ralf Wilhelms, head coach of the Flash and a former teammate of Quinn on the San Diego Sockers, recommended Conrad and Flash goalkeeper Joe Cannon. The Clash signed Conrad that year. He played with the club, later re-branded as the Earthquakes, for four seasons, helping them to the MLS Cup in 2001. In 2000, he also played for Lech Poznań in Poland.