In 1921 and 1922, Liesemer attended Normal School in Calgary at what became the Administration Building for the Southern Alberta Institute of Technology.

He was an instructor in history, geography and social studies at Crescent Heights High School in Calgary.

Aylmer Liesemer first ran as a Labor politician in the 1935 Alberta general election and was badly defeated finishing 15th out of 20 candidates.

Liesemer would run again in the 1944 Alberta general election this time as a candidate for the provincial Cooperative Commonwealth he find electoral success winning the 5th spot in the Single Transferable Vote.

He attempted to win his seat back running in Calgary North in the 1959 Alberta general election but was badly defeated by incumbent Rose Wilkinson from Social Credit.