Mainframe Tester

We are looking for a Mainframe Test Engineer with experience in testing applications running on IBM mainframe environments. The candidate should be comfortable with COBOL, JCL, DB2, VSAM, and CICS and have hands-on experience with functional, integration, regression, and batch testing.

Key Responsibilities

• Analyze business and functional requirements and prepare test scenarios/cases.
• Execute functional, integration, system, regression, and batch testing.
• Test mainframe applications involving COBOL, JCL, DB2, VSAM, and CICS.
• Validate batch jobs, job streams, return codes, datasets, and output files.
• Write and execute SQL queries for DB2 data validation.
• Perform backend/database validation and reconciliation.
• Validate input/output files and reports.
• Analyze abends and job failures and coordinate with development teams for resolution.
• Log, track, and retest defects using tools such as JIRA/ALM.
• Participate in test planning, test execution, defect triage, and release validation.
• Support production validation and post-release testing when required.
• Prepare test execution reports and maintain testing documentation.

Required Technical Skills

• Mainframe testing experience.
• COBOL
• JCL
• DB2 / SQL
• VSAM
• CICS
• TSO/ISPF
• Mainframe batch processing and job monitoring.
• Knowledge of file formats such as sequential files and GDGs.
• Good understanding of SDLC and STLC.
• Defect management tools such as JIRA/ALM.

Good to Have

• Experience with Endevor/Changeman.
• Knowledge of CA7 or other scheduling tools.
• Experience with ETL/data migration testing.
• Automation experience using tools/scripts where applicable.
• Agile/Scrum experience.
• Experience in banking, insurance, or financial-services applications.