Immanuel Feyi-Waboso started his rugby career with Rumney RFC and went on to play for Cardiff Schools at U11 and U15 level. Cardiff Rugby’s academy signed the wing ahead of the 2020-21 season and he made his debut in the first round of the Pro14 Rainbow Cup. Academic reasons caused him to relocate to Birmingham, where he enrolled at Aston University. Feyi-Waboso joined Wasps in February 2022 before they entered into administration, going on to sign for Exeter Chiefs later that year. He became a regular starter in Devon, where his electric pace and work rate caught the eye of England Men’s head coach Steve Borthwick. He made his debut in the opening round 2024 Guinness Men's Six Nations as England defeated Italy 27-24 in Rome. The wing toured Japan and New Zealand with England and scored three tries, a vein of form he continued into the Autumn Nations Series that gave him a return of five tries from his first eight internationals. He was recently called into Borthwick’s training squad ahead of England XV v France XV.