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

Solid 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 code scanners

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

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📌 Senior Systems Administrator - Infrastructure & Cloud (Ontario)
🏢 isgSearch
📍 Ontario