We are partnering with a well-established Quebec-based organization operating in the education and public services sector. Its technological environment is complex, distributed, and continuously evolving, with infrastructure deployed across multiple geographic locations.

In this context, the organization is looking to hire a

Senior System and Network Administrator

who will take ownership of a critical multi-site infrastructure, ensure its stability, and actively contribute to its evolution.

You will be responsible for managing, evolving, and securing a distributed IT infrastructure including Microsoft server environments, multi-site networks (LAN/WAN), VPN connectivity, and security systems (firewalls, intrusion detection, etc.).

You will play a key role in maintaining operations, optimizing performance, and implementing solutions aligned with business needs.

Key Responsibilities

Administer and maintain multi-site network environments (LAN/WAN, VPN, VLAN)

Manage and configure firewalls and security solutions (WatchGuard or equivalent)

Ensure performance, availability, and security of wired and wireless networks

Participate in infrastructure deployment and modernization projects

Administer Windows Server, Active Directory, GPO, and Office 365 environments

Manage Azure services and system management tools (SCCM, SCOM)

Ensure backup management, storage (NAS/SAN), and business continuity





Diagnose and resolve incidents (log analysis, monitoring, diagnostic tools)

Propose and implement technological improvements

Write and maintain technical documentation

Collaborate with internal teams to ensure a high level of support

Profile

Minimum 3 years of experience in system and network administration

Hands-on experience in

multi-site environments (VPN, firewalls, WAN)

Strong expertise in

Microsoft infrastructure (AD, GPO, O365, Azure)

Experience with firewalls (WatchGuard, Fortinet, Palo Alto or equivalent)

Experience with virtualization (VMware, Hyper-V)

Valuable understanding of networking protocols (DNS, DHCP, TCP/IP, routing, etc.)

Autonomous, resourceful, and problem-solving mindset

Ability to work in a distributed and non-standardized environment

Assets

Experience with Aruba (switching, WiFi)

Experience in complex multi-site environments or managed services (MSP)

Experience in education or public sector environments

Knowledge of scripting (PowerShell) or cloud technologies

Additional Information

Full-time position

6 weeks of vacation

Hybrid work model (2–3 days onsite – Montreal, Ville Saint-Laurent)

Retention bonus

Group insurance

Retirement plan

Flexible schedule

Professional development opportunities and more

*We thank all applicants for their interest; however, only those selected for an interview will be contacted.

📌 Senior Network & Infrastructure Administrator (Riviere-des-Prairies—Pointe-aux-Trembles)
🏢 Blitz TI
📍 Riviere-des-Prairies—Pointe-aux-Trembles