Ojomoh began his rugby career aged six at Bath Rugby before joining Chippenham RFC aged nine.[3] He joined the Bath Rugby academy aged fourteen and in September 2019 made his club debut against Exeter Chiefs in the Premiership Rugby Cup.[4] In March 2021 he made his first league appearance off the bench against London Irish[5][6] and his maiden European outing followed a week later against Zebre Parma in the EPCR Challenge Cup.[6][7] He graduated from Bath Rugby's Academy to the senior squad in February 2022.[1]
In June 2021 Ojomoh received his first call-up to the senior England squad by coach Eddie Jones for a training camp.[10] In February 2024 he scored a try for England A against Portugal.[11]