Career
Playing career
Born in Budapest, Jeny played club football for hometown side Kispest Air Corps and MTK Budapest. He also represented the Hungarian national side at the 1924 Summer Olympics, and earned a total of 20 caps for the team between 1919 and 1926. Coaching career
Jeny managed Spanish side Atlético Madrid between 1930 and 1933, Portuguese side Sporting Clube de Portugal in 1933-1934 and Győri European Theatre of Operations Football Club in 1955.