About Group 4 Networks
Group 4 Networks is a privately held, 100% Canadian-owned managed IT and cybersecurity provider serving Toronto and the GTA since 2008. Meet the team behind your IT.
I'm Damir Grubisa. I founded Group 4 Networks in the Greater Toronto Area in 2008.
Before that I spent years leading IT inside larger organizations, including Director-level roles at WPP and Millward Brown, where the job was keeping systems running while the business moved. I saw how often technology got bought before the problem was clear, and how little that helped the people who actually needed work to get done.
So I built an MSP that starts with the business, then the tech. Seventeen years later I'm still here in Toronto, still Canadian-owned, and still working with owner-led firms (law, dental, professional services) that need IT and cybersecurity they can trust. They'll have to carry me out.
When you hire us, you're not buying a logo. You're deciding whether the people who own the company will still pick up when something breaks. Group 4 Networks is privately held and 100% Canadian-owned. Clients work with the people who run the firm.
Who we are
We serve Toronto, Mississauga, Markham, Richmond Hill, and the rest of the GTA. Flat-rate managed IT and cybersecurity. Named people on your account. A 15-minute target on critical issues, around the clock.
How we work
Is Group 4 Networks a Canadian-owned company? Yes. Group 4 Networks is a privately held, 100% Canadian-owned managed IT and cybersecurity provider based in Toronto, Ontario. It is not a division of a national or international provider, and clients work directly with the people who own and run the company.
Our 15-minute P1 response target applies around the clock, including weekends and holidays. Your on-call engineer gets paged immediately for any P1 alert - server down, ransomware activity detected, total connectivity loss. Business-hours help desk (password resets, software issues, general requests) follows standard hours unless you've added our After-Hours Support plan.
We've managed dozens of IT provider transitions, including a few where the outgoing vendor was unresponsive. Our onboarding process includes network documentation, credential recovery, and a parallel-run period before we take over full support. We deal with the outgoing vendor so you don't have to. Most transitions complete within 3-6 weeks with zero user-facing downtime.
Our vCIO advisors are shared across a limited number of clients, but each client has a named advisor and a standing quarterly review slot. Your vCIO knows your environment, your business goals, and your budget constraints - they're not a rotating resource you brief from scratch each call. For clients who need monthly strategic sessions, we offer a dedicated vCIO add-on.
Group 4 Networks has built hands-on expertise across Microsoft 365, Azure, and Microsoft security workloads serving Toronto and GTA businesses since 2008. Our team understands the Microsoft ecosystem end to end — from licensing and migration to ongoing administration and security configuration — so clients work with professionals who know the platform, not generalists.
We're a flat-rate managed IT firm, which means our incentive is to deploy technology that works reliably and reduces our support burden - not technology that generates resale commissions. When we recommend a platform, we tell you why and show you the alternatives we considered. When a free Microsoft tool does the job, we say so.
Our team holds industry certifications from Microsoft, Cisco, CompTIA, and other leading technology vendors. We maintain these certifications through continuous training and professional development, ensuring our clients benefit from the latest technology expertise and best practices.
We maintain 99.9% uptime for client systems through proactive monitoring, rapid response protocols, and preventive maintenance. Our local Toronto presence enables 15-minute response times for critical issues, and we provide 24/7 support coverage for all client systems.
Talk to us
Call (416) 623-9677 or contact Group 4 Networks.