Senior Core Infrastructure Expert (AD, DNS & Virtualisation)

Canada

Montreal, Quebec, Canada

AWSGCP

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Company Description

Our client is a major player in the global supply chain and services industry, present in over 160 countries with 150 000 employees. This international group relies on a strategic hybrid IT environment (On-Premise and multi-cloud Azure, AWS, GCP) and a state-of-the-art Cyber Defense Center to secure its complex operations and support its global integrations.

Job Description

As a true "super expert," you will guarantee the architecture, engineering, security, and resilience of the Group's core infrastructure services, with a specialized focus on Active Directory, DNS, and virtualization.

Active Directory & DNS Engineering: Design, evolve, and maintain AD architectures (forests, domains, replication, GPO, privileged administration models) as well as large-scale distributed Microsoft DNS services.

Virtualization & Storage Platforms: Administer and optimize hypervisor clusters (VMware vSphere/ESXi, Microsoft Hyper-V) and participate in the integration of enterprise storage arrays (SAN, zoning, LUNs, replication).

Projects & Maintenance (N3): Lead major infrastructure projects (migrations, consolidations, disaster recovery / DR exercises) and provide Level 3 expertise for the resolution of major incidents and root cause analysis.

Automation & Hardening: Develop PowerShell scripts to automate recurring tasks and compliance checks; apply hardening and vulnerability patching.

Governance & Knowledge Transfer: Draft architecture documentation and operational procedures, define service health KPIs, and mentor operations teams.

Qualifications

Bachelor's/Master's degree in Computer Science, Infrastructure Engineering, or equivalent experience.

Minimum 5 years of experience in managing large-scale enterprise infrastructure.

Highly advanced technical expertise in Microsoft Active Directory (GPO, Kerberos, LDAP, replication) and Microsoft DNS.

Proven expertise in enterprise virtualization (VMware vSphere/ESXi or Hyper-V) and solid knowledge of SAN storage.

Excellent command of PowerShell scripting for automation.

Excellent communication skills, ability to explain complex concepts, and availability for on-call rotations if necessary.

Microsoft, VMware, or storage certifications are highly preferred.

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Senior Core Infrastructure Expert (AD, DNS & Virtualisation)

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