Boghosian became a member of Sanders' coaching staff in 1957 and remained there through 1964 under Bill Barnes, then joined the staff of new head coach Dee Andros at Oregon State in Corvallis. In late 1965, he interviewed for the Oklahoma Sooners' head coaching job, but Jim Mackenzie was hired. Boghosian remained at OSU through 1974, when he joined the Houston Oilers coaching staff.[2] In 1976, he joined the expansionSeattle Seahawks as offensive line coach, but left coaching prior to the 1978 season to focus on business.[3]
Boghosian returned to coaching in 1979 as offensive line coach with the Oakland Raiders, and helped them to two Super Bowl wins (XV, XVIII), the latter after the franchise moved to Los Angeles. He was offered the Oregon State head coaching job in late 1984, but declined.[2][4][5] The Raiders fell to 5–10 in 1987, his ninth year with the team, and he was one of five assistants let go.[6]