Canadian Tire Corporation (CTC) is seeking a

Sr. Specialist, SRE – Compute Platforms

to serve as the enterprise technical owner for CTC's compute platforms, including IBM Mainframe (z/OS), AIX, IBM iSeries, IBM NOI, New Relic, and associated business-critical services and applications. This role is accountable for platform governance, service ownership, lifecycle strategy, observability governance, vendor oversight, and reliability outcomes across the compute environment. Operational execution is performed by HCL/Harmony and other designated support providers. The Sr. Specialist provides governance, strategic direction, technical leadership, and vendor accountability. Key Responsibilities

Provide governance and oversight of HCL/Harmony-delivered Mainframe services, including z/OS lifecycle planning, platform currency, capacity strategy, LPAR governance, and infrastructure roadmap planning Assess platform, OS, middleware, and application versions; identify lifecycle, supportability, security, and compliance risks; develop renewal and modernization strategies Lead platform lifecycle governance activities including hardware refresh planning, OS upgrade strategy, maintenance governance, and long-term roadmap alignment Define, govern, and periodically review monitoring and observability requirements for Mainframe infrastructure and business-critical services Provide governance and oversight of disaster recovery readiness, resiliency planning, recovery testing, and recovery capability validation Provide technical leadership and governance during major incidents, problem investigations, and corrective action planning Establish governance standards for monitoring coverage, alerting requirements, event correlation,



escalation models, and service health dashboards Drive continuous improvement of observability maturity, service visibility, monitoring effectiveness, and operational intelligence Validate vendor-delivered services against contractual obligations, SOW commitments, service level expectations, and governance requirements Lead vendor performance reviews, operational scorecards, service reporting reviews, and continuous improvement initiatives Support audit, compliance, and control activities related to backup, recovery, disaster recovery, monitoring controls, and infrastructure lifecycle management Lead continuous improvement initiatives focused on service maturity, reliability, observability, sustainability, risk reduction, and operational excellence Requirements

10+ years of experience in platform ownership, infrastructure governance, Site Reliability Engineering (SRE), service management, or enterprise technology leadership Solid background in Mainframe platform governance, including z/OS environments, lifecycle planning, capacity management, and vendor-managed support models Experience governing enterprise monitoring, observability, event management, or operational intelligence practices across large-scale technology environments Knowledge of AIX, IBM iSeries, enterprise middleware,



and application hosting environments supporting business-critical workloads Experience governing enterprise storage and backup services, including capacity planning, recovery validation, and resiliency requirements Experience supporting disaster recovery governance, DR exercises, recovery reporting, remediation tracking, and resiliency planning Experience working within MSP-governed or vendor-managed service environments Strong understanding of incident, problem, change, lifecycle, operational risk, vendor governance, and service management processes Demonstrated ability to lead technical escalations and hold vendors accountable to service expectations Strong communication skills with the ability to translate technical risk into clear operational and business impact Preferred Qualifications

Experience supporting IBM Mainframe environments, including z/OS, middleware, enterprise schedulers, and file transfer platforms Experience with observability and monitoring platforms such as IBM OMEGAMON, ITM/Tivoli, Netcool, New Relic, Dynatrace, Splunk, Elastic, ThousandEyes, or equivalent Familiarity with ServiceNow-based incident, event, problem, change, risk, vendor, and lifecycle management workflows Experience governing infrastructure refreshes, hardware lifecycle initiatives, maintenance planning, and data centre change activities Experience working with outsourced infrastructure providers including SOW governance, SLA management, and contract oversight Location:

Toronto, Ontario OR Calgary, Alberta (Hybrid: In-office 4 days a week) Salary Range:

$64,000 – $106,000 annually (typical hiring range: $64,000 – $85,000)

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📌 Sr. Specialist, SRE – Compute Platforms (Winnipeg)
🏢 Canadian Tire Corporation
📍 Winnipeg