We are seeking a highly experienced

Mainframe Test Lead

with extensive expertise in Mainframe applications, testing methodologies, test strategy development, and test delivery leadership. The ideal candidate will lead end-to-end testing initiatives for business-critical Mainframe systems, ensuring quality, reliability, and regulatory compliance across complex application landscapes. This role requires strong leadership, stakeholder management, test planning, risk management, and coordination capabilities while driving high-quality software delivery across multiple test phases. The role aligns with responsibilities commonly owned by Test Leads in enterprise Mainframe programs, including strategy, governance, defect management, and risk-based testing. In this role, you will Mainframe Validation & Data Testing

Validate COBOL programs, JCL jobs, CICS transactions, DB2 databases, VSAM files, IMS applications, and related Mainframe components. Perform data validation, data reconciliation, file verification, and source-to-target migration testing activities. Lead batch cycle validation, financial reconciliation, and downstream/upstream integration testing. Ensure accuracy of data transformations, conversions, and business processing outcomes. Test Strategy & Planning

Define and execute comprehensive

Test Strategies, Test Approaches, and Test Plans

for Mainframe initiatives, ensuring alignment with business objectives and quality goals. Lead requirements analysis, impact assessments, risk identification, estimation activities, and overall test planning. Establish test scope, entry and exit criteria, traceability, quality metrics, and governance processes. Drive risk-based testing practices to ensure optimal coverage of high-priority business functions and technical components.



Test Design & Execution

Lead the design, review, and execution of test scenarios, test cases, and test scripts for Mainframe applications. Manage and oversee Functional Testing, System Integration Testing (SIT), End-to-End (E2E) Testing, Regression Testing, User Acceptance Testing (UAT), Batch Testing, and Interface Testing. Validate Mainframe batch processes, job scheduling dependencies, interfaces, and file transmissions. Coordinate test execution across multiple workstreams and ensure timely completion of planned testing activities. Defect & Quality Management

Establish defect management processes and lead defect triage, prioritization, root cause analysis, and resolution tracking. Monitor defect trends, quality metrics, and test coverage to drive continuous quality improvements. Provide regular status reporting, risk assessments, mitigation plans, and executive-level quality dashboards. Ensure compliance with release readiness criteria and quality gates. Leadership & Stakeholder Management

Lead and mentor testing teams, providing guidance on Mainframe testing best practices, standards, and methodologies. Collaborate closely with Business Analysts, Developers, Architects, Production Support Teams, SMEs, and Business Stakeholders. Facilitate test planning workshops, defect review meetings, status meetings, and stakeholder communications.



Drive cross-functional coordination to resolve dependencies, issues, and project risks. Release & Production Support

Support release planning, production validation, deployment verification, and post-implementation testing activities. Ensure successful completion of go-live activities, smoke testing, and production reconciliation. Participate in audit, compliance, and regulatory testing activities when required. Work model We believe hybrid work is the way forward as we strive to provide flexibility wherever possible.

Based on this role’s business requirements, this is a hybrid position requiring 3 days a week in a client or Cognizant office in Toronto, ON.

Regardless of your working arrangement, we are here to support a healthy work-life balance though our various wellbeing programs. Note:

The working arrangements for this role are accurate as of the date of posting. This may change based on the project you’re engaged in, as well as business and client requirements. Rest assured; we will always be explicit about role expectations. What you need to have to be considered Required Technical Skills

Mainframe Technologies

COBOL JCL CICS DB2 VSAM IMS TSO/ISPF File-AID Endevor / Changeman Control-M or equivalent scheduling tools SDSF Testing Expertise

Test Strategy and Test Approach Development Functional Testing System Integration Testing (SIT) End-to-End Testing (E2E) Regression Testing User Acceptance Testing (UAT) Batch Testing Data Validation and Reconciliation Data Migration and Conversion Testing Interface Testing Risk-Based Testing Release Validation Defect Management and Root Cause Analysis Test Management & Collaboration Tools

JIRA HP ALM / Quality Center Test Management T

📌 Mainframe Test Lead (Canada)
🏢 Cognizant
📍 Canada