Heather Sheehy - Biography

Assistant Deputy Minister (Materiel) (ADM(Mat))

Heather Sheehy was named Assistant Deputy Minister (Materiel) on September 25, 2025. Prior to joining the Department of National Defence, Heather was the Assistant Secretary of the Government Operations Sector in the Treasury Board Secretariat where she supported Treasury Board Ministers on numerous issues of importance in advancing the government's agenda.

Throughout much of 2020, Heather worked on the federal government’s response to the COVID-19 pandemic and the delivery of benefits to Canadians. Prior to this, she was Associate Assistant Deputy Minister in the Strategic and Service Policy Branch at Employment and Social Development Canada (ESDC) since September 2017. She previously spent three years as the Director of Operations, Machinery of Government at the Privy Council Office. Prior to this, she was Chief of Staff to the Deputy Minister at ESDC.

Earlier in her career she worked in various departments including Health Canada and (then) Citizenship and Immigration Canada as well as working for two years with the Canadian Medical Association.

Heather obtained her undergraduate in politics from Queen’s University and has a Masters in Public Administration from Dalhousie University.