Junior Mainframe Developer
Posted
Key responsibilities :
- Develop and maintain COBOL/JCL programs for VSAM and QSAM data extraction under senior developer guidance.
- Assist in building and executing IDMS data extraction utilities.
- Analyze copybooks, record layouts, and file structures.
- Implement data handling for REDEFINES, packed decimals, and fixed/variable-length records.
- Execute extraction jobs, troubleshoot failures, and validate extracted data.
- Perform record-count reconciliation, field-level verification, and unit testing.
- Prepare technical documentation, data mappings, and execution procedures.
- Support transferring and validating extracted files for Linux application consumption.
Required Skills
- Working knowledge of COBOL, JCL, VSAM, and sequential file processing.
- Basic understanding of CA IDMS or willingness to develop hands-on expertise.
- Knowledge of mainframe record formats, copybooks, and data conversion.
- Good analytical, debugging, and documentation skills.
Expected Deliverables (Both Resources)
- Reusable COBOL/JCL and IDMS data extraction utilities.
- Extracted VSAM, QSAM, and IDMS data in Linux-compatible formats.
- Documented record layouts, field mappings, relationships, and legacy business rules.
- Extraction execution guides, reconciliation reports, and test evidence.
- Technical documentation supporting migration and mainframe decommissioning.
