He played college football at the University of Notre Dame and attended Tilden High School in Chicago, Illinois.
[3] He played in the 1946 College All-Star Game against the Los Angeles Rams.
[2] Mieszkowski was selected by the Boston Yanks with the 52nd pick in the 1946 NFL Draft.
Mieszkowski became the line coach at Marquette University in 1956 and spent several years there.
Mieszkowski died on February 15, 2004, at his home in Lombard, Illinois due to complications from multiple sclerosis.