2019: 20 GP, 19 GS, 1 G, 1 A in 1,700 min.
Signed by Bethlehem Steel FC on January 23, 2019. Ofeimu started in Steel FC's season-opening match at Birmingham (March 10) and the home-matches against North Carolina (March 16), Memphis (March 24) and Pittsburgh (March 30). He started in the match at Swope Park (April 6), scoring his first goal of 2019 and providing his first-professional assist and then started the following match against Charleston (April 13). Ofeimu started in the matches at Charlotte (April 16), against Indy (April 20), at Loudoun (May 3), against Atlanta (May 12), against Ottawa (May 19) and against Louisville (May 26). He returned to the starting lineup in the match against Nashville (June 9) and then started the following matches against Saint Louis (June 15), Tampa Bay (June 22) and at Hartford (June 28). Ofeimu started the matches at Louisville (July 20), Saint Louis (July 27) and against Hartford (August 1). He made a substitute appearance in the match against Swope Park (September 1). Ofeimu returned to the starting lineup in the match at North Carolina (September 7).
2018: 12 GP, 9 GS, 1 G, 0 A
Joined Bethlehem Steel FC as an Academy Player from Union Academy. Ben appeared in 12 matches in the 2018 USL season, starting in nine of those appearances and scored one goal.
2015-2018 (Union Academy): Ben appeared in 63 matches (56 starts) and scored three goals across four seasons with the youth-arm of the Union. He started all 25 matches in the 17-18 Academy season, scoring one of his three goals.