Expert Technology Services is seeking an experienced SAP FICO Architect in Montreal to lead a major S/4HANA Greenfield implementation for an Aerospace & Defense MRO environment. You will drive solution design, workshops, and align finance processes with SAP modules. The role requires fluent English and French, robust integration experience with MM, SD, PP, PM/CS, CO-PA, and Product Costing, and the ability to coordinate global delivery and mentor teams.