Administrateur système réseau/Administratrice système réseau

Go Rock IT; Montreal; Hybrid; CAD 90,000 - 130,000; Full time

Job summary

GO ROCK IT in Montreal is seeking a Senior Systems & Network Administrator to ensure the stability, security, and evolution of IT infrastructure across a hybrid Windows/Linux environment. You will manage Active Directory/Entra ID, DNS and DHCP, GPO, SSO, and virtualization with VMware or Proxmox, while coordinating cloud resources across Azure, AWS, OCI or GCP.

You will monitor performance, troubleshoot incidents, handle patching and backups, contribute to DR planning, and automate tasks with

Qualifications

• 10+ years of experience in systems, network, and IT infrastructure administration.
• Deep expertise in Windows Server environments and strong Linux proficiency.
• Strong knowledge of identity and infrastructure services (Active Directory, Entra ID, DNS, DHCP, GPO, SSO).
• Solid networking expertise and ability to troubleshoot complex connectivity and security issues.
• Hands-on experience with VMware or Proxmox and at least one cloud platform (Azure, AWS, OCI, or GCP).
• Understanding of monitoring, patch management, backup, and recovery practices.

Responsibilities

• Administer, maintain, and optimize Windows Server and Linux environments.
• Manage Active Directory, Entra ID, DNS, DHCP, GPO, and SSO.
• Administer, maintain, and optimize VMware or Proxmox virtualization environments.
• Configure, administer, and troubleshoot network infrastructure including switches, VLANs, routing, firewalls, and VPNs.
• Manage cloud resources across Azure, AWS, OCI, or GCP.
• Contribute to infrastructure migration, deployment, and modernization projects.
• Monitor and maintain infrastructure availability, capacity, and performance.
• Troubleshoot complex incidents, identify root causes, and implement long-term solutions.
• Manage patching, backups, restoration testing, and disaster recovery planning.
• Automate recurring tasks using PowerShell or Bash.
• Maintain technical documentation and provide advanced technical support when needed.

Skills

Windows Server

Linux

Active Directory

Entra ID

DNS/DHCP

GPO

SSO

VMware/Proxmox

Cloud platforms

PowerShell/Bash

Tools

VMware/Proxmox

Azure

AWS

OCI

GCP

Veeam

ManageEngine

Darktrace

CrowdStrike

Elastic

Fortinet

Extreme Networks

Yoobic

Zebra devices

Job description

French version available here: View job description

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GO ROCK IT is a leading talent agency specializing in Information Technology (IT) and Digital Marketing.

Our agency stands out for the diversity and depth of expertise of our talent network, as well as the experience and dedication of our recruitment and talent management team. We're committed to connecting talented professionals with opportunities that align with their skills and career goals while helping our clients find the expertise they need.

About the Role

Are you an experienced IT infrastructure professional who enjoys tackling complex technical challenges, optimizing environments, and driving continuous improvement?

We're looking for a Senior Systems & Network Administrator to join the team of one of our strategic partners in Montreal.

In this role, you'll play a key part in ensuring the stability, security, and ongoing evolution of IT infrastructure across a hybrid environment combining Windows and Linux systems, networking, virtualization, and cloud services.

Systems & Identity Administration

• Administer, maintain, and optimize Windows Server and Linux environments.
• Manage Active Directory, Entra ID, DNS, DHCP, Group Policy (GPO), and authentication services (SSO).
• Administer, maintain, and optimize VMware or Proxmox virtualization environments.
• Configure, administer, and troubleshoot network infrastructure, including switches, VLANs, routing, firewalls, and VPNs.
• Manage cloud resources across the platforms in use (Azure, AWS, OCI, or GCP).
• Contribute to infrastructure migration, deployment, and modernization projects.

Reliability, Security & Continuous Improvement

• Monitor and maintain infrastructure availability, capacity, and performance.
• Troubleshoot complex incidents, identify root causes, and implement long-term solutions.
• Manage patching, backups, restoration testing, and contribute to disaster recovery planning.
• Automate recurring administrative tasks using PowerShell or Bash.
• Maintain technical documentation, collaborate with vendors, and provide advanced technical support when needed.

What We're Looking For

• Solid experience in systems, network, and IT infrastructure administration, ideally 10+ years.
• Deep expertise in Windows Server environments, good proficiency with Linux, and strong knowledge of identity and infrastructure services (Active Directory, Entra ID, DNS, DHCP, GPO, SSO).
• Strong networking expertise and the ability to troubleshoot complex connectivity and security issues.
• Hands-on experience with VMware or Proxmox and at least one cloud platform (Azure, AWS, OCI, or GCP).
• Solid understanding of infrastructure monitoring, patch management, backup, and recovery practices.
• A proactive, autonomous, and detail-oriented approach, with the ability to prioritize based on business impact.
• Strong collaboration skills, a willingness to share knowledge, and the ability to explain technical concepts clearly.
• Veeam and cloud backup solutions.
• ManageEngine, particularly for patch management.
• Darktrace, CrowdStrike, or Elastic.
• Zebra devices and the Yoobic platform.
• Microsoft Azure, AWS, Fortinet, or Extreme Networks certifications.

Why This Opportunity Could Be a Great Fit

• A diverse technical role spanning systems, networking, security, and cloud infrastructure.
• Opportunities to contribute to infrastructure modernization and continuous improvement initiatives.
• The chance to play a key role in ensuring the reliability, security, and evolution of IT infrastructure.

Interested in Learning More?

Does this opportunity sound like a good match, even if you don't check every box?

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At GO ROCK IT, we value equity, diversity, and inclusion. We look forward to connecting with you, learning more about your career goals, and exploring how we can help you grow professionally in a dynamic, innovative environment where you feel respected and valued.