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Added 1 day ago
Senior IT Developer
TD
London, ON · Mississauga, ON · Toronto, ON
Full-time
A strong technology background as Mainframe COBOL developer with exceptional experience building large scale enterprise solutions.
Added 1 day ago
Senior Tandem / Mainframe Developer – HP NonStop | COBOL | TACL | Enscribe
Apptoza Inc.
Toronto, ON
Contract
We are looking for a Tandem / Mainframe Developer with strong experience in HP NonStop (Tandem) and/or Mainframe technologies. The candidate will be responsible for application development,…
Added 1 day ago
Senior Mainframe Performance and Capacity Specialist
BMO
Toronto, ON · SCC
Full-time
At BMO, technology powers millions of customer interactions every day. We are seeking a highly skilled Senior Mainframe Performance & Capacity Management Specialist to play a critical role…
Added 2 days ago
RQ11310 - Solutions Designer - Senior
Maarut
Toronto, ON
Contract
Knowledge of integrated networking technologies, mainframe,
Added 2 days ago
Enterprise Architect
Nutrien
Calgary, AB
Full-time
Facilitate cross-domain architecture working sessions and present options, dependencies, risks and trade-offs to senior stakeholders
Added 3 days ago
Senior Solution Architect - (Banking)
BMO
Toronto, ON · BMOPLACE
Full-time
Provides architectural expertise and domain knowledge to advise and guide senior leaders.
Added 3 days ago
Sr. Team Leader, Wealth Client Services
CIBC
Toronto, ON
Full-time
Working in close partnership with the Manager of Private Banking Operations, the Senior Leader, Wealth Client Services ensures that the ongoing operation of the Private Wealth Management…
Added 3 days ago
Sr. Business Systems Analyst
TD
Toronto, ON
Full-time
As a Senior Business Systems Analyst, you will be a key member of an Agile Product Delivery team, serving as the bridge between business stakeholders and technology teams. You will lead…
Added 3 days ago
Senior Software Developer, SharePoint & Microsoft Power Apps
Workplace Safety and Insurance Board (WSIB)
London, ON
$106,460.91 to $125,248.03 CAD / year
Full-time
- Support production maintenance and implementation of Legacy mainframe, PeopleSoft ERP, and EPM applications.
Added 3 days ago
Senior Software Developer, SharePoint & Microsoft Power Apps
Workplace Safety and Insurance Board (WSIB)
Toronto, ON · Greater Toronto Area, Canada
$106,460.91 to $125,248.03 CAD / year
Full-time
- Support production maintenance and implementation of Legacy mainframe, PeopleSoft ERP, and EPM applications.
Added 4 days ago
Sr. CICS System Programmer
Swoon
Toronto, ON · Scarborough, ON
Full-time
Act as a senior technical resource for the CICS infrastructure on z/OS.
Added 4 days ago
Senior Information and Data Security Analyst (Global Security)
Royal Bank of Canada
Toronto, ON
Full-time
We are seeking an experienced Senior Information and Data Security Analyst to join our cross-functional team supporting RBC's data security infrastructure. In this role you will provide…
Added 4 days ago
Enterprise Architect - Applications & ERP
Nutrien
Saskatoon, SK
Full-time
Facilitate cross-domain architecture working sessions and present options, dependencies, risks and trade-offs to senior stakeholders
Added 4 days ago
Enterprise Architect - Applications & ERP
Nutrien
Calgary, AB
Full-time
Facilitate cross-domain architecture working sessions and present options, dependencies, risks and trade-offs to senior stakeholders
Added 5 days ago
Senior Software Developer, SharePoint & Microsoft Power Apps
Workplace Safety and Insurance Board (WSIB)
ON · Ontario, Canada
Full-time
Support production maintenance and implementation of Legacy mainframe, PeopleSoft ERP, and EPM applications.
Added 5 days ago
Director, Mainframe Innovation and AI
CIBC
Toronto, ON
Full-time
…external partners to identify requirements, deliver effective mainframe solutions, and communicate project status, risks, and outcomes to senior…
Added 5 days ago
Ingénieur Support Mainframe / Mainframe Support Engineer
mthree
Montreal, QC
Full-time
Nous recherchons un(e) Ingénieur(e) Support Mainframe pour rejoindre une équipe dynamique chez l'un de nos clients. Ce poste consiste à assurer le support des applications mainframe…
Added 5 days ago
Ingénieur Support Mainframe / Mainframe Support Engineer
mthree
Montreal, QC
Nous recherchons un(e) Ingénieur(e) Support Mainframe pour rejoindre une équipe dynamique chez l'un de nos clients. Ce poste consiste à assurer le support des applications mainframe…
Added 5 days ago
IBM Mainframe Operations Analyst
Quartech Systems Ltd.
Canada
Full-time
Level: We're looking for intermediate and senior candidates
Added 6 days ago
Senior IT Build/CICS Programmer
TD
Toronto, ON
Full-time
We are seeking a Senior CICS systems programmer to join our team providing system support of IBM's Customer Information Control System (CICS) on z/OS in the Mainframe Database Technical…
Added 8 days ago
Senior Quality Assurance Specialist
Artech L.L.C.
Toronto, ON
Contract
We are currently hiring a "QA Lead/Senior QA Consultant" for a Canadian Client. Please apply if you are interested.
Added 9 days ago
Senior Information and Data Security Analyst (Global Security)
RBC
Toronto, ON
Full-time
We are seeking an experienced Senior Information and Data Security Analyst to join our cross-functional team supporting RBC's data security infrastructure. In this role you will provide…
Added 10 days ago
Senior Technical Lead
BMO
Toronto, ON · FCP
Full-time
…transform the future of banking. We are seeking a highly motivated Senior Technical Lead who combines deep technical expertise with strong leadership capabilities to drive the evolution of…
Added 10 days ago
Senior Software Quality Engineer (Mainframe)
Sun Life
Toronto, ON · Waterloo, ON · Sun Life Waterloo King
Full-time
Collaborate with internal teams to develop detailed mainframe test cases to validate business application logic and identify software defects
Added 10 days ago
Senior Test Analyst (Mainframe Testing)
Cognizant
Toronto, ON
$60,000 to $90,000 CAD / year
Full-time
We are looking for a Senior Test Analyst with Mainframe Testing experience to manage and oversee the testing processes for our banking client. The ideal candidate will be responsible for…

BMO

Senior Mainframe Performance and Capacity Specialist

Toronto, ON, Canada
SCC, Canada

Pay: $85,500.00 - $185,000.00
Job type: Full-time
Apply by: Oct 31, 2026
Experience: 7-12 years of experience supporting large-scale mainframe environments.
Posting language: English
Posted: Sep 25, 2026

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Applications open in a new tab.

Original job description

Application Deadline:

10/30/2026

Address:

4100 Gordon Baker Road

Job Family Group:

Technology

Drive Performance. Enable Stability. Power BMO's Future.

At BMO, technology powers millions of customer interactions every day. We are seeking a highly skilled Senior Mainframe Performance & Capacity Management Specialist to play a critical role in ensuring the performance, reliability, and scalability of our enterprise mainframe environment. This is an exciting opportunity to join a team that supports mission-critical platforms that are foundational to BMO's business and customer experience.

As a trusted technical expert, you will leverage your deep mainframe performance management expertise, analytical mindset, and investigative approach to identify trends, solve complex performance challenges, and drive operational excellence. You will collaborate across technology teams and business partners to optimize system performance, improve operational capabilities, and ensure service levels are consistently achieved.

What You'll Do

Mainframe Performance & Capacity Management

Lead performance management activities across BMO's enterprise mainframe environment.
Analyze system performance, identify trends, and proactively address potential capacity or performance concerns before they impact users.
Utilize data-driven analysis and capacity modeling techniques to ensure environments remain scalable, resilient, and aligned with business growth.
Investigate complex performance issues and apply creative, out-of-the-box thinking to identify root causes and implement sustainable solutions.
Develop insights and recommendations through analysis of system metrics, utilization trends, and operational data.
Understand and apply capacity modeling methodologies to support forecasting, strategic planning, and operational readiness.

Production Support & Operations Excellence

Provide expert support for mission-critical systems operating in a 24x7x365 environment.
Lead the response, diagnosis, and resolution of production incidents, program failures, and system performance issues.
Monitor system health, performance, logging, alerting, and operational processes to maintain service excellence.
Ensure business service levels, availability targets, and operational commitments are consistently achieved.
Participate in testing cycles to validate operational readiness and successful deployment of infrastructure and applications.
Deploy, implement, and provision applications and infrastructure in accordance with deployment plans and build standards.

Strategic Leadership & Collaboration

Serve as the primary Subject Matter Expert (SME) for mainframe performance management and capacity planning.
Partner with technology teams, engineering groups, infrastructure teams, and business stakeholders to recommend and implement operational improvements.
Identify emerging trends, risks, and opportunities to inform technology decision-making and strategy.
Mentor team members, share expertise, and contribute to the development of technical communities of practice across BMO.
Influence operational strategy and promote innovative solutions, processes, and technologies that enhance platform performance and reliability.
Operate at an enterprise level, providing specialized expertise and guidance to senior leaders and stakeholders.

Innovation & Continuous Improvement

Proactively identify opportunities to strengthen operational capabilities and improve service delivery.
Drive initiatives that enhance monitoring, automation, performance optimization, and operational effectiveness.
Champion a culture of continuous improvement and technical excellence.
Apply creative thinking and expert judgment to solve complex, ambiguous, and non-routine challenges.
Stay current with industry trends, emerging technologies, and best practices in mainframe operations, performance management, and capacity planning.

What We're Looking For

Required Qualifications

7-12 years of experience supporting large-scale mainframe environments.
Expert-level knowledge of Mainframe Performance Management.
Strong experience with production support, IT operations, monitoring, incident management, service restoration, and maintaining mission-critical systems.
Deep understanding of enterprise monitoring, logging, alerting, and operational support processes.
Proven experience troubleshooting complex performance, capacity, and availability issues.
Strong analytical, investigative, and problem-solving skills with the ability to translate data into actionable insights.
Experience with operational support practices, concepts, and technologies gained through formal training and/or practical experience.
Strong understanding of system dependencies, infrastructure, and operational processes.
Excellent verbal and written communication skills with the ability to influence technical and business stakeholders.
Strong collaboration and relationship management skills with a focus on cross-functional partnerships.
Ability to manage ambiguity and navigate complex organizational environments.

Preferred Qualifications

Experience with Capacity Modeling, forecasting, and performance planning methodologies.
Hands-on experience with IntelliMagic for performance analytics, reporting, capacity management, and infrastructure optimization.
Experience applying Data Science, advanced analytics, statistical modeling, and predictive analysis techniques to performance management, operational intelligence, and capacity forecasting.
Bachelor's or Master's degree in Computer Science, Information Systems, Engineering, Mathematics, Business, Data Science, or a related discipline.
Experience supporting large-scale enterprise financial services environments.
Demonstrated ability to identify trends and leverage data to support strategic decision-making.
Passion for mentoring, coaching, and developing technical talent.

Why BMO?

At BMO, you'll have the opportunity to work on some of the most critical technology platforms in banking while helping shape the future of enterprise technology. You'll be part of a collaborative team that values innovation, continuous learning, and operational excellence. Your expertise will directly contribute to the stability, performance, and scalability of systems that support millions of customers and colleagues every day.

If you thrive on solving complex technical challenges, uncovering insights through performance analytics, and driving meaningful operational improvements at enterprise scale, we invite you to join BMO and help us Boldly Grow the Good in business and life.

Salary:

$85,500.00 - $185,000.00

Pay Type:

Salaried

The above represents BMO Financial Group’s pay range and type.

Salaries will vary based on factors such as location, skills, experience, education, and qualifications for the role, and may include a commission structure. Salaries for part-time roles will be pro-rated based on number of hours regularly worked. For commission roles, the salary listed above represents BMO Financial Group’s expected target for the first year in this position.

BMO Financial Group’s total compensation package will vary based on the pay type of the position and may include performance-based incentives, discretionary bonuses, as well as other perks and rewards. BMO also offers health insurance, tuition reimbursement, accident and life insurance, and retirement savings plans. To view more details of our benefits, please visit: https://jobs.bmo.com/global/en/Total-Rewards

About Us

At BMO we are driven by a shared Purpose: Boldly Grow the Good in business and life. It calls on us to create lasting, positive change for our customers, our communities and our people. By working together, innovating and pushing boundaries, we transform lives and businesses, and power economic growth around the world.

As a member of the BMO team you are valued, respected and heard, and you have more ways to grow and make an impact. We strive to help you make an impact from day one – for yourself and our customers. We’ll support you with the tools and resources you need to reach new milestones, as you help our customers reach theirs. From in-depth training and coaching, to manager support and network-building opportunities, we’ll help you gain valuable experience, and broaden your skillset.

To find out more visit us at https://jobs.bmo.com/ca/en.

BMO is committed to an inclusive, equitable and accessible workplace. By learning from each other’s differences, we gain strength through our people and our perspectives. Accommodations are available on request for candidates taking part in all aspects of the selection process. To request accommodation, please contact your recruiter.

Note to Recruiters: BMO does not accept unsolicited resumes from any source other than directly from a candidate. Any unsolicited resumes sent to BMO, directly or indirectly, will be considered BMO property. BMO will not pay a fee for any placement resulting from the receipt of an unsolicited resume. A recruiting agency must first have a valid, written and fully executed agency agreement contract for service to submit resumes.

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More about this job

Responsibilities

The specialist will lead performance management and capacity planning for the enterprise mainframe environment to ensure system reliability and scalability. They will also provide expert production support, diagnose complex performance issues, and collaborate with stakeholders to drive operational improvements.

Requirements

Candidates must have 7-12 years of experience in large-scale mainframe environments with expert-level knowledge of performance management. Strong analytical skills, experience with production support, and the ability to translate data into actionable insights are essential.

Skills

Capacity planning
Production support
Incident management
System monitoring
Capacity modeling
Performance analytics
IntelliMagic
Data science
Statistical modeling
Predictive analysis
Operational excellence
Troubleshooting
Infrastructure optimization
Technical leadership

Benefits

Health insurance
Tuition reimbursement
Accident insurance
Life insurance
Retirement savings plans

Visa sponsorship

Not detected in the job text

Keywords

Mainframe
Performance Management
Capacity Planning
IntelliMagic
Data Science
Predictive Analysis
Statistical Modeling
Production Support
Incident Management
System Health
Infrastructure
Operational Excellence
Banking
Financial Services
Monitoring
Logging
Alerting
Capacity Modeling
Root Cause Analysis
Enterprise Systems

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