Mainframe Infra Engineer
- Toronto, ON, Canada
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- English
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Original job description
Position: Mainframe Infra Engineer
Location: Toronto, ON – Hybrid
Skills
- IBM z/OS
- MQ
- RACF
Job Description/ Responsibilities
- Own the IBM z/OS patch management strategy, including SMP/E maintenance (PTFs, APARs, RSU/CSI management) and subsystem patching (CICS, DB2, IMS, MQ, RACF, and related products).
- Define the rolling patch and maintenance calendar in alignment with IBM service delivery cycles, security advisories, and enterprise change freeze windows.
- Assess incoming IBM and ISV maintenance for applicability, risk, and priority; triage HIPER, security, and integrity PTFs for expedited handling.
- Set technical direction for, and provide hands-on oversight of, an offshore mainframe operations team executing patch installs, regression testing, and validation across the z/OS estate.
- Establish and enforce patching standards, runbooks, and quality checkpoints so offshore-executed work meets the same bar as work performed directly.
- Review and approve patch testing results, rollback plans, and go/no-go decisions before production implementation, including for changes executed by the offshore team.
- Coordinate with systems programmers, security, and application teams to plan patch windows and manage changes through the CAB process.
- Track patch compliance across the mainframe estate; report on outstanding vulnerabilities, aging maintenance, and remediation timelines to management.
- Serve as the primary escalation point for patch-related incidents, including issues surfaced by the offshore team during off-hours windows; lead root cause analysis and remediation.
Regards
Patrick Fernandez
Talent Acquisition Group - Strategic Recruitment Manager
More about this job
Responsibilities
Own the IBM z/OS and subsystem patching strategy, maintenance calendar, compliance tracking, and production approval process. Direct and oversee offshore operations, coordinate patch changes with technical and application teams, and lead escalations and root cause analysis for patch-related incidents.
Requirements
The role calls for expertise in IBM z/OS, MQ, and RACF, along with hands-on experience managing mainframe maintenance and subsystem patches. It also requires technical oversight of offshore operations, patch testing and rollback reviews, change coordination, compliance reporting, and incident escalation.
Skills
- IBM z/OS
- MQ
- RACF
- SMP/E
- PTF Management
- APAR Management
- RSU/CSI Management
- CICS
- DB2
- IMS
- Patch Management
- Mainframe Operations
- Regression Testing
- Change Management
- Root Cause Analysis
- Security Patching
Visa sponsorship
Not detected in the job text
Hiring contact
Patrick Fernandez
Categories
- Technology
- Engineering
- Security & Safety
- Management & Leadership
Keywords
- IBM z/OS
- MQ
- RACF
- SMP/E
- PTFs
- APARs
- RSU/CSI
- CICS
- DB2
- IMS
- ISV Maintenance
- Patch Management
- Security Advisories
- HIPER PTFs
- Mainframe Operations
- Offshore Team Oversight
- Regression Testing
- Patch Compliance
- Rollback Plans
- Go/No-Go Decisions
- Change Advisory Board
- Change Management
- Vulnerability Remediation
- Root Cause Analysis
- Incident Management