My best guess would be : « Manager marketing et développement commercial »

It is officially listed and described in the rncp (National Directory of Professional Training) :
http://www.rncp.cncp.gouv.fr/grand-public/visualisationFiche?format=fr&fiche=27377

It’s standard French though and might not be so good in Canadian French as they tend to avoid anglicisms.

Marketing translates to commercialisation.

In french Canada, job ads mostly use Directeur/gérant de la commercialisation au détail. More than often and from my experience, marketing is not translated and used as it is: Directeur marketing.

Source: french canadian, worked in retail