College and amateur Olum spent four years playing
college soccer at
Missouri Baptist University, earning
NAIA honorable mention All-America honors three times. After playing collegiately from 2006 to 2009, Olum officially graduated from Missouri Baptist University in 2019 and was inducted into its Hall of Fame in 2021. Olum began his post-college career in 2006 season with the
St. Louis Lions of the
USL Premier Development League, scoring 9 goals in 16 games. He later played for the
Austin Aztex and
Orlando City, before moving to
Sporting Kansas City of
Major League Soccer in September 2011. Olum moved to
Kedah FA in the
Malaysia Premier League ahead of the 2015 season. After one season abroad, he re-signed with Sporting Kansas City in December 2015. On 3 February 2017, Olum was traded to
Portland Timbers, now of MLS, in exchange for $50,000 in general allocation money and a first-round pick in the
2018 MLS SuperDraft. Olum was released by Portland on 10 December 2018. On 15 March 2019, Olum was signed by
Minnesota United FC. On 16 January 2020, Olum was signed by
Miami FC ahead of their first season in the
USL Championship. ==International career==