Mr. Juneau received an M.A. from the Department of Urban Affairs and Policy Analysis at the New School for Social Research in New York City in 1974. He began his career as a research assistant at the Brookings Institution in Washington.
Mr. Juneau's career in the Public Service of Canada began in 1975 in the Department of Finance where he served in various positions including that of executive assistant to the Deputy Minister. In 1983 he moved to the Priorities and Planning Secretariat of the Privy Council Office. Starting in 1985, he served as Director General for labour market policy, and Director General and then Assistant Deputy Minister for immigration policy. In 1993, he moved to Health Canada as Assistant Deputy Minister for policy and communications.
Mr. Juneau returned to PCO in 1998 as Deputy Secretary for Intergovernmental Operations. The Prime Minister appointed him as Deputy Secretary to the Cabinet for Operations in January 2000.
In July of 2002, Mr. Juneau was appointed as the first Deputy Minister of Infrastructure Canada with the mandate to create a new federal department. In 2004, the Prime Minister added relations with communities to the mandate. From the fall of 2006 to the fall of 2009, Mr. Juneau was the resident Director for Canada and Morocco on the board of the European Bank for Reconstruction and Development in London (UK).
For 2014-205,Mr. Juneau will serve as President of the national board of the Institute of Public Administration of Canada.
Mr. Juneau is also a fellow of the Centre d’étude et de recherche internationales de l’Université de Montréal, a senior advisor to the Forum of Federations, and an advisor to Action Canada, an organization providing leadership training to promising young people.