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Galent

Mainframe Infra Engineer

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Dec 4, 2026
Posting language: English
Posted: Nov 4, 2026

Original job description

Role: Mainframe Infra Engineer

Location: Toronto, ON (Hybrid)

Top 3 skills required for this role:

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.

We are an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, citizenship status, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable law https://www.e-verify.gov/sites/default/files/everify/posters/IER_RighttoWorkPoster.pdf

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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 and validation across the mainframe estate. Set standards for offshore operations, approve testing and production changes, track compliance, coordinate change windows, and lead incident escalation and remediation.

Requirements

The role calls for strong IBM z/OS, MQ, and RACF expertise, along with experience managing mainframe patching and subsystem maintenance. It also requires the ability to direct offshore operations, review testing and rollback plans, coordinate enterprise change processes, and handle patch-related incidents.

Skills

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

Visa sponsorship

Not detected in the job text

Keywords

IBM z/OS
MQ
RACF
SMP/E
PTFs
APARs
RSU
CSI Management
CICS
DB2
IMS
ISV Maintenance
HIPER PTFs
Security Advisories
Patch Management
Mainframe Operations
Regression Testing
Validation
Runbooks
Rollback Plans
Production Implementation
Change Advisory Board
Patch Compliance
Vulnerability Remediation
Root Cause Analysis
Offshore Team Management

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