Bermingham played his first game for Kilmacud Crokes in 1951 and, with a few interruptions, continued to play for the club until 1983, when business pressures put him off the panel. As a juvenile, Bermingham played in a number of games, including in the first ever Under 13 Juvenile Championships (beaten in the Irish Press Shield final). During the early 1950s, he played Scoil Uí Chonaill in the Under 15 Final. He also played on the Under 16½ team that won the championship in 1955.