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Added 10 mins ago
SP
RVP, Sales - Data Foundation - Public Sector
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ON · Ontario, Canada
- Full-time
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Added 40 mins ago
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- Full-time
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CIBC

Sr. Mainframe - z/OS System Programmer

Toronto, ON, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Oct 11, 2026
Experience: You bring 10+ years of experience in mainframe technology, with strong expertise in z/OS systems programming, operating systems support, and large-scale implementation planning.
Posting language: English
Posted: Oct 8, 2026

Original job description

We’re building a relationship-oriented bank for the modern world. We need talented, passionate professionals who are dedicated to doing what’s right for our clients.

At CIBC, we embrace your strengths and your ambitions, so you are empowered at work. Our team members have what they need to make a meaningful impact and are truly valued for who they are and what they contribute.

To learn more about CIBC, please visit CIBC.com

What You'll Be Doing

Our Cloud Engineering Transformation (CET) Mainframe Engineering team is responsible for delivering stable, secure, and resilient mainframe infrastructure that supports critical business operations. As a Senior z/OS System Programmer, you’ll report to the Director, Mainframe Engineering and provide technical leadership across complex z/OS operating system upgrades, maintenance rollouts, and infrastructure initiatives within a geographically dispersed parallel sysplex (GDPS) multi-site environment. You’ll help ensure our environments remain reliable and compliant with established controls, standards, policies, and procedures. You’ll collaborate with senior leaders, internal partners, and external vendors to assess risks, recommend resiliency and integrity improvements, and support the availability of our hardware and software assets in line with service level agreements. You’ll also contribute to the growth of the Mainframe Engineering team by sharing your expertise, supporting development, and fostering strong collaboration across peer groups.

At CIBC we enable the work environment most optimal for you to thrive in your role. Details on your work arrangement (proportion of on-site and remote work) will be discussed at the time of your interview.

How You'll Succeed

Technical leadership - Lead complex z/OS operating system implementation, upgrade, and maintenance planning across large-scale mainframe environments. Provide subject matter expertise to support infrastructure stability, security, and operational resilience.
Systems support and problem resolution - Diagnose and resolve complex technical issues using your knowledge of IBM support structures, diagnostic processes, and system tools. Document root cause analysis, corrective actions, and preventive measures to strengthen ongoing support practices.
Resiliency and recovery - Support and lead annual mainframe disaster recovery exercises, maintain recovery readiness, and recommend continuous improvements to strengthen business continuity capabilities.
Platform expertise - Apply your in-depth knowledge of Parallel Sysplex, Geographically Dispersed Parallel Sysplex (GDPS), System Modification Program Extended (SMP/E), system exits, and programming tools such as Assembler, COBOL, REXX, and CLIST to maintain and enhance the platform.
Collaboration and influence - Partner with teams across Application Development, Infrastructure, Information Technology (IT) Operations, and Production Support, as well as hardware and software vendors, to deliver solutions that align with technology and business goals.
Operational support - Participate in the on-call rotation and proactively monitor system health to identify risks, prevent issues, and help ensure service expectations are consistently met.

Who You Are

You have deep mainframe expertise. You bring 10+ years of experience in mainframe technology, with strong expertise in z/OS systems programming, operating systems support, and large-scale implementation planning.
You have relevant technical knowledge. You have hands-on experience with Parallel Sysplex, GDPS architecture, IBM utilities, compilers, and diagnostic tools such as SYSVIEW, MainView, and IntelliMagic. Experience with IBM certifications or advanced mainframe accreditation is an asset.
You’re a strong problem solver. You use analytical thinking, sound judgment, and a disciplined approach to resolve issues effectively, especially in high-pressure or major incident situations.
You’re an effective communicator and collaborator. You build strong relationships across technical teams, business partners, and vendors, and you communicate complex information clearly through verbal, written, and presentation-based interactions.
You lead with impact. You use your expertise and credibility to influence decisions, guide best practices, and help teams adopt solutions that improve security, resiliency, and operational performance.
Values matter to you. You bring your real self to work, and you live our values - trust, teamwork, and accountability.

What CIBC Offers

At CIBC, your goals are a priority. We start with your strengths and ambitions as an employee and strive to create opportunities to tap into your potential.

We work to recognize you in meaningful, personalized ways including a competitive compensation, a banking benefit*, wellbeing support and additional offers such as employee and family assistance programs and MomentMakers, our social, points-based recognition program.
Our spaces and technological toolkit will make it simple to bring together great minds to create innovative solutions that make a difference for our clients.

*Subject to program terms and conditions

What you need to know

CIBC is committed to creating an inclusive environment where all team members and clients feel like they belong. We seek applicants with a wide range of abilities and we provide an accessible candidate experience. If you need accommodation, please contact Mailbox.careers-carrieres@cibc.com
CIBC is committed to clarity in our hiring process. All roles posted are opportunities we’re actively recruiting for, unless stated otherwise.
You need to be legally eligible to work at the location(s) specified above and, where applicable, must have a valid work or study permit
We may ask you to complete an attribute-based assessment and other skills test (such as simulation, coding, French proficiency).
We use artificial intelligence tools during the recruitment process. Our goal for the application process is to get to know more about you, all that you have to offer, and give you the opportunity to learn more about us.

Expected End Date

2026-11-30

Job Location

Toronto-81 Bay, 16th Floor

Employment Type

Regular

Weekly Hours

37.5

Skills

Analytical Thinking, Backup and Recovery, Communication, Disaster Recovery (DR), IBM Information Management System (IMS), IBM Mainframes, IBM OS, IBM Software, IBM z/OS, Infrastructure Management (IM), Mainframe Programming, Rexx, Technical Leadership

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More about this job

Responsibilities

The Senior z/OS System Programmer will lead complex mainframe infrastructure upgrades, maintenance, and resiliency initiatives within a GDPS multi-site environment. They will also provide technical leadership, diagnose complex system issues, and collaborate with cross-functional teams to ensure platform stability and security.

Requirements

Candidates must have 10+ years of experience in mainframe technology with deep expertise in z/OS systems programming and large-scale implementation planning. Strong analytical skills, proficiency in IBM diagnostic tools, and the ability to influence technical decisions are essential for this role.

Skills

z/OS Systems Programming
Parallel Sysplex
GDPS
SMP/E
Assembler
COBOL
REXX
CLIST
System exits
Technical leadership
Infrastructure management
Disaster recovery
Problem resolution
SYSVIEW
MainView
IntelliMagic

Benefits

Competitive compensation
Banking benefit
Wellbeing support
Employee and family assistance programs
MomentMakers social recognition program

Visa sponsorship

Not detected in the job text

Keywords

Mainframe
z/OS
System Programmer
Parallel Sysplex
GDPS
SMP/E
Assembler
COBOL
REXX
CLIST
SYSVIEW
MainView
IntelliMagic
Infrastructure
Disaster Recovery
Cloud Engineering Transformation
Banking
System exits
Root cause analysis
Service level agreements
IBM utilities
Compilers
Operational resilience
System health monitoring
Technical leadership

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