JD for COBOL developer
- 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.)
- Solid understanding of file layouts, copybooks, and data transformations
- Experience performing impact analysis and code remediation
- 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:
- 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:
- 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:
- 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

Qualifications
- BE

R

📌 Technical Lead (Bengaluru)
🏢 Infinite Computer Solutions
📍 Bengaluru