Subcontractor

COBOL Developer - JD

Location - Noida/Bengaluru/HYD
Exp- 6-12 Years
Mode -Hybrid( 3 Days a week)
Role - Contractor

Required Technical Skills:
- Strong hands-on experience with COBOL development
- Good knowledge of JCL, batch processing, and job scheduling
- Experience working with VSAM / flat files / Oracle DB (or other relational databases)
- Good exposure to mainframe utilities (SORT, IDCAMS, IEBGENER, IEFBR14 etc.)
- Strong understanding of file layouts, copybooks, and data transformations
- Experience performing impact analysis and code remediation
- Proficiency in debugging and resolving issues in large, complex mainframe applications

Additional specific technical skills needed for D0 to F6 conversion:
- Strong experience handling field length changes in legacy mainframe systems during format conversions
- Expertise in analyzing copybook and file layout changes, including increases or decreases in field size
- Ability to identify and remediate field length dependencies across:
o COBOL data definitions (PIC clauses, REDEFINES)
o Database columns (DB2, relational DBs)
o VSAM and flat file records
- Proficient in updating COBOL PIC definitions (alphanumeric and numeric fields) to align with new standard requirements
- Hands-on experience handling numeric vs alphanumeric field conversions caused by length or format changes
- Skilled in managing leading/trailing spaces, zero padding, truncation, and alignment issues
- Experience resolving buffer overruns, data truncation, and record mismatch issues due to field length changes
- Ability to perform impact analysis for field size changes across:
o Input and output interfaces
o Downstream and upstream systems
- Expertise in validating mandatory, conditional, and situational fields impacted by length changes
- Experience updating and testing SORT, extract, and report programs affected by modified record layouts
- Proficient in testing field length changes through:
o Unit testing
o Regression testing
o Parallel run comparisons (old vs new formats)
- Strong debugging skills using mainframe utilities (File-AID, SORT utilities, dumps) to validate data integrity after changes

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