Senior Systems Administrator - Infrastructure & Cloud

ISG Search Inc; Brampton; On-site; CAD 108,000 - 132,000; Full time

Benefits offered by this job

Profit sharing

Health and dental coverage

Health care spending account

Education assistance programme

Employee assistance programme (EAP)

Paid holidays and floater days

Shift premiums

Company events

Job summary

ISG Search Inc. is seeking a Senior Systems Administrator for Infrastructure and Cloud in the Greater Toronto Area. You will own and stabilize the server estate, drive modernization, cloud adoption, platform upgrades and data migration.

The role requires hands-on leadership for cutovers, ongoing operation, and cost-managed cloud usage across on-premises and Azure services. Strong AD, Azure and virtualization skills are essential.

Qualifications

• 7+ years IT infrastructure experience.
• 7+ years managing Active Directory, DNS, DHCP and Group Policy.
• Expert-level Azure: Entra ID, VMs, storage, networking and App Services.
• Experience with SSO, MFA, CA, RBAC and advanced security policies.
• Experience with VMware, Hyper-V or comparable virtualization.
• Experience with backup, DR and business continuity technologies.
• Strong networking fundamentals.

Responsibilities

• Administering and maintaining the server estate, monitoring performance, capacity and availability.
• Owning Windows Server environment end to end (AD, DNS, DHCP, GPO).
• Maintaining storage, backup and DR platforms; testing BC plans.
• Administering Microsoft 365 and cloud-connected services.
• Planning infrastructure upgrades and hardware lifecycle management.
• Supporting Azure services across a hybrid estate (VMs, storage, networking, identity).
• Leading cloud migration planning and implementation; monitoring cloud consumption and cost.
• Leading server, application and data migrations with cutover and rollback plans.
• Moving workloads off legacy platforms and validating migrated data.

Skills

Active Directory

Azure

VMware/Hyper-V

PowerShell

Networking

Security policies

ERP migrations

Cloud migrations

Tools

Azure CLI

Terraform

Job description

Salary: CAD120000 - CAD120000 per year

Job title

Senior Systems Administrator - Infrastructure & Cloud

Duration

Permanent

Role status

Current opening

Our client

A Canadian manufacturer in the Greater Toronto Area, running a continuous production environment supported by a modern in-house IT function.

Intro

Reporting to the Director of Technology, this role keeps the server and infrastructure estate stable day to day while leading the technical side of the organization’s modernization programme - cloud adoption, platform upgrades, and application and data migration. It suits a hands‑on senior administrator who wants ownership of the environment rather than a narrow queue, and who is comfortable planning a cutover as well as running the platform afterwards.

Principal tasks and responsibilities include

• Administering and maintaining the physical and virtual server estate, monitoring performance, capacity and availability
• Owning the Windows Server environment end to end, including Active Directory, Group Policy, DNS and DHCP
• Maintaining storage, backup and disaster recovery platforms, and keeping business continuity processes in place and tested
• Administering Microsoft 365 and the cloud-connected services alongside it
• Planning and carrying out infrastructure upgrades and hardware lifecycle management
• Supporting Azure services across a hybrid estate - virtual machines, storage, networking and identity
• Contributing to cloud migration planning and then implementing it, and monitoring and optimizing cloud consumption and cost
• Leading the technical planning and execution of server, application and data migrations, including cutover and rollback plans
• Moving workloads off legacy platforms onto current ones, and validating migrated data and systems before sign-off
• Supporting ERP, application and wider infrastructure modernization initiatives
• Applying infrastructure security practice: access control, privileged account management, patch management and vulnerability remediation
• Maintaining technical documentation and system architecture diagrams
• Working alongside internal IT staff, vendors and project teams
• Taking part in planned after‑hours maintenance and upgrade windows as required

Qualifications and pre-requisites

• Minimum 7 years of IT infrastructure and server administration experience
• Minimum 7 years managing Active Directory, DNS, DHCP and Group Policy
• Expert‑level Azure: Entra ID, virtual machines, storage, networking and App Services
• Experience with SSO, MFA, Conditional Access, RBAC and advanced security policies
• Experience with VMware, Hyper‑V or comparable virtualization technologies
• Experience with backup, disaster recovery and business continuity technologies
• Strong understanding of networking fundamentals
• Demonstrated experience leading infrastructure, cloud and ERP migrations
• Microsoft 365 administration experience
• Automation experience with PowerShell, Azure CLI, Terraform or equivalent tooling
• Experience supporting a cloud transformation initiative
• Familiarity with VOIP telephony, label printers and bar codescanners
• Sound understanding of IT service management, and of change and release management procedures
• Able to analyze, evaluate and define needs, and to create and execute implementation test plans
• Strong analytical, problem‑solving, organizational and time‑management skills
• Excellent communication, customer service and presentation skills, working well independently and as part of a team
• Experience supporting manufacturing production environments is an asset
• Knowledge of budget and vendor management is an asset

Additional information or perks

• Profit sharing
• Health and dental coverage
• Health care spending account
• Education assistance programme
• Employee assistance programme (EAP)
• Paid holidays and floater days
• Shift premiums
• Company events

isgSearch does not use artificial intelligence throughout the hiring process.