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COMPANY VALUES: We succeed when our clients succeed + THE best at what we do + Passion drives our determination + Better every day + Cybersecurity in everything + Stronger together

If you are looking for a company, within which you can grow and get better. If you are dedicated to make sure the clients have the best experience every step of the way. We are looking for you!

S3 is an MSP focused on offering a range of services to best satisfy our clients. We complete these services with consulting and a dedicated team support to ensure clients stay up and running at all times. We are now the largest, long-standing MSP (Managed Service Provider) serving the greater Montreal and Toronto areas. Our approach is part of the reason our very first clients are still with us and we plan on keeping it this way.



As a Senior Systems Administrator within S3 Technologies’ Co-Managed Infrastructure team, you will assume operational ownership of our clients’ infrastructure. Your primary responsibility is to ensure the seamless operation of our clients’ server and network infrastructure at all times. This involves close collaboration with client IT staff, addressing operational issues, participating in the on-call rotation, and actively managing the ticket queue. The role demands a balance of technical expertise, strong communication skills, and an unwavering commitment to the continuous smooth functioning of clients’ IT environments.




  • Successfully assume operational ownership of assigned clients’ infrastructure, demonstrating proactive management to maintain continuous smooth operations.
  • Effectively manage the ticket queue, ensuring appropriate prioritization of issues based on urgency and client impact.
  • Establish strong working relationships with the IT staff of assigned clients, demonstrating proficiency in addressing operational challenges collaboratively.



  • Proactively collaborate with client IT staff to implement improvements and optimizations based on the operational ownership of the infrastructure.
  • Provide mentorship and support to junior team members in operational ownership and ticket management.
  • Contribute to the development and implementation of process improvements within the Co-Managed Services team, emphasizing the importance of operational continuity.



  • Operational Ownership: Assume responsibility for the clients’ infrastructure, ensuring continuous smooth operations, and proactively addressing potential challenges.
  • Client Collaboration: Work closely with client IT staff to understand their infrastructure needs, address concerns, and ensure seamless integration of S3’s services.
  • Ticket Management: Effectively manage the ticket queue, prioritizing issues based on urgency and client impact, and ensuring timely resolution.
  • Oncall Rotation: Participate in the on-call rotation to provide 24/7 support for critical issues, coordinating with client IT staff when necessary.
  • Infrastructure Optimization: Proactively identify and implement improvements to enhance the performance, security, and reliability of clients’ IT systems.
  • Documentation: Maintain accurate and up-to-date documentation of system configurations, procedures, and best practices.

Think you're the perfect candidate for us?

We are always looking for new talent, so if the above sparks your interest, fill out the application form.

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