Job Title: Mainframe Developer
City: Toronto
State/Province: Ontario
Posting Start Date: 10/6/26
Job Description:
Job DescriptionRole SummaryWe are looking for a
Mainframe Developer with strong Credit Cards domain experience to design, develop, and support
mission-critical credit card processing applications. The role involves working on
high-volume batch and online mainframe systems supporting the
end-to-end credit card lifecycle, ensuring stability, performance, and regulatory compliance.
Key ResponsibilitiesMainframe Development - Credit Card Systems- Design, develop, and maintain mainframe applications supporting credit card issuing platforms.
- Work across card lifecycle modules, including:
- Account setup & card origination
- Authorization & transaction processing
- Billing, statements, interest & fees
- Payments, collections, disputes & chargebacks
- Develop and enhance batch and online (CICS) programs for large-scale transaction processing.
Technical Responsibilities- Hands-on development using:
- COBOL / COBOL II
- JCL
- CICS
- DB2
- VSAM (KSDS / ESDS)
- Handle job scheduling, restarts, abend resolution, and performance tuning.
- Perform root cause analysis (RCA) for production incidents and implement permanent fixes.
Integration & Platform Support- Support integrations with:
- Card networks (Visa / Mastercard)
- Fraud & risk systems
- Core banking and downstream systems
- Implement scheme-mandated and regulatory changes impacting card processing flows.
- Participate in platform upgrades, enhancements, and modernization initiatives.
Testing & Production Support- Support unit testing, system testing, UAT, and production releases.
- Provide L2 / L3 production support for card applications.
- Prepare and maintain technical documentation and runbooks.
Required Skills & ExperienceMust Have- 6-10+ years of hands-on Mainframe development experience
- Strong experience in Credit Cards domain (issuer side preferred)
- Expertise in:
- COBOL, JCL, CICS, DB2, VSAM
- Batch & online transaction processing
- Experience working in high-volume, mission-critical banking systems
- Strong analytical, debugging, and problem-solving skills
Good to Have- Experience with card processing platforms (issuer or processor-hosted)
- Exposure to mainframe coexistence / modernization programs
- Knowledge of Agile delivery models
- Experience working with global banking clients
Tools & Environment- z/OS Mainframe
- Scheduling tools (e.g., CA-7 / Control-M)
- Change & release management tools
Mandatory Skills: Application Modernization - Mainframe.
Experience: 5-8 Years.
The expected compensation for this role ranges from CAD 77000 to CAD 120000 .
