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J&M Group

Mainframe Infra Engineer

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Apr 25, 2027
Posting language: English
Posted: Oct 27, 2026

Original job description

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.

What are the top 3 skills required for this role?

IBM z/OS
MQ
RACF

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More about this job

Responsibilities

Own the z/OS patch strategy and maintenance calendar, assess and prioritize IBM and ISV updates, and oversee patch installation, testing, and validation across the mainframe estate. Coordinate production approvals and change windows, track compliance and vulnerabilities, and lead escalations and root cause analysis for patch-related incidents.

Requirements

The role calls for strong IBM z/OS and mainframe subsystem maintenance expertise, including MQ and RACF, along with experience managing SMP/E maintenance and security or integrity patches. It also requires technical oversight of an offshore operations team, patch testing and rollback review, change coordination, compliance reporting, and incident escalation.

Skills

IBM z/OS
MQ
RACF
SMP/E
Mainframe Patch Management
CICS
DB2
IMS
PTF and APAR Management
Security Patching
Regression Testing
Change Management
Root Cause Analysis

Visa sponsorship

Not detected in the job text

Keywords

IBM z/OS
SMP/E
PTFs
APARs
RSU
CSI Management
CICS
DB2
IMS
MQ
RACF
Mainframe Operations
Patch Management
IBM Maintenance
ISV Maintenance
Security Advisories
HIPER PTFs
Regression Testing
Patch Validation
Runbooks
Rollback Plans
Go/No-Go Decisions
Change Advisory Board
Patch Compliance
Vulnerability Remediation
Root Cause Analysis
Offshore Team Oversight

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