He was a defender on the United States. national lacrosse team that competed in the 1928 Summer Olympics in Amsterdam, where lacrosse was a demonstration sport. After returning from the Olympics, Roy joined Waverly Press, where he worked in engineering and later became a vice president In 1939, he was invited to teach Industrial Organization and Management in the evening college of Johns Hopkins.
Roy"s testimony in 1952 helped nine African Americans gain admission to the A course at Baltimore Polytechnic Institute.
Roy was appointed Dean of Engineering in 1956, and retired in 1973. He was appointed Director of Chesapeake Research Consortium, which covered environmental concerns of state of Maryland.
In 1970,he was appointed to the board of governors of Washington College. The Institute of Industrial Engineers (Maryland Chapter) created a Roy medal to be given annually to a student from Baltimore Polytechnic School.
Roy published a book, Administrative Process, which was used widely in many colleges.
He also wrote Bragolections -- The career Adventures of a Poo-Bah -- available at Johns Hopkins Library and a prized possession of many of his friends. Poo-Bah was a name given by his English teacher at Baltimore Polytechnic Institute.