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Simon MarcilSM

Simon Marcil

President at S3 Technologies

Executive Leadership
Plateau, Montreal, QC

Simon Marcil serves as President at S3 Technologies, a managed IT and cybersecurity provider in Plateau, Montreal, QC, leading its work across Managed IT Services, Co-Managed IT Services, and Strategic IT Planning (vCIO).

Reviewed by Best IT MSP · Updated June 2026

About Simon Marcil

Simon Marcil is the President of S3 Technologies, a Montreal managed IT services provider. He holds a degree in computer engineering from Ecole Polytechnique de Montreal, and his technical background shapes how he leads the company across IT, cybersecurity, and business strategy.

In his role he defines the firm's offerings, anticipates the future of IT and cybersecurity, and works to keep both the team and clients prepared for what is ahead, with the goal of keeping S3 a leading MSP in Quebec. Since 2006 he has been a member of the Entrepreneurs' Organization (EO), serving as a board member and later as President of the EO Montreal Chapter.

Outside the office, Marcil is an endurance and backcountry athlete who has backcountry skied across all seven continents and completed several ultramarathons around the world.

Areas of Expertise

Managed IT Services
Co-Managed IT Services
Strategic IT Planning (vCIO)
Cybersecurity & Monitoring
Microsoft 365 & Azure
User Support (Remote & On-Site)

Career & Recognition

Education

Degree in computer engineering from Ecole Polytechnique de Montreal

Prior experience

Board member, Entrepreneurs' Organization (EO), President, EO Montreal Chapter

How This Profile Is Verified

Employment
Certifications (pending)
Thought Leadership (pending)