During his career, Kearney was based out of Chicago and Provincetown, Massachusetts.
Kearney received his artistic education at the Cranbrook Academy of Art in Bloomfield Hills, Michigan, and the Universita per Stranieri in Perugia, Italy.
In 1950, he co-founded the Contemporary Art Workshop in Chicago.
Subsequently, he lived and worked in Italy numerous times, most notably in Rome in 1963 and 1964 while on a Fulbright Award, and in 1985 and 1992 while serving as a visiting artist at the American Academy in Rome.
Kearney learned his welding skills as a World War II U.S. Navy sailor while performing underwater repair of naval vessels.