Over the last 28 years, Mireille has played a number of supporting roles at law firms in positions that have included the head of the research centre and of student and articling student training at the Québec City office, and coordinator of the team that prepared the manual Procédures en matière familiale: divorce, séparation de corps et union de fait and the 4th edition of Législation sur le patrimoine familial annotée.

From 2002 to 2017, Ms. Francoeur held the position of administrative director at the Québec City office, where she led numerous initiatives designed to optimize administrative processes for the firm as a whole, while managing the business of the Québec City office.

She has also worked on the implementation of a number of technological solutions over the years, including Elite Enterprise (2002-2003), Gestion des délais de la procédure civile (2004), iManage Worksite (2010-2011) and LexisNexis InterAction (2015).