Mainframe Developer

Job Description

We are looking for an experienced Mainframe Developer with strong expertise in COBOL, JCL, VSAM, IDMS, and batch processing. The ideal candidate will be responsible for developing, enhancing, and maintaining mainframe applications and supporting data integration between legacy systems and modern platforms.

The role involves working on interface files between ICAR and EDEN, supporting legacy system modernization, troubleshooting production issues, and ensuring reliable data exchange across systems.

Key Responsibilities

• Develop, enhance, and maintain COBOL and JCL programs for interface file processing between ICAR and EDEN.
• Modify file layouts, data mappings, transformation logic, and validation routines.
• Enhance batch processing workflows, GDG structures, and VSAM datasets.
• Support legacy system modernization and migration to EDEN-derived data sources.
• Work with IDMS databases, including schema, subschema, and database navigation.
• Perform record-level and field-level analysis of inbound and outbound interfaces.
• Develop and execute unit, system, integration, regression, and UAT testing.
• Troubleshoot production issues, batch failures, file processing errors, and data discrepancies.
• Manage JCL, PROCs, scheduling definitions, and operational documentation.
• Support implementation, migration, deployment, and cutover activities.
• Collaborate with project managers, business analysts, developers, testers, and business stakeholders.

Required Technical Skills

• Minimum 3 years of experience in COBOL programming.
• Minimum 3 years of experience with JCL (Job Control Language).
• Minimum 3 years of experience with VSAM datasets, indexing, REPRO, and DEFINE utilities.
• Minimum 3 years of experience with IDMS database development and support.
• Strong experience in batch processing development and support.
• Experience with flat file design, parsing, data transformation, and interface mapping.
• Experience with GDG management and dataset lifecycle administration.
• Experience with FTP/SFTP processing, troubleshooting, and file transfer automation.
• Experience with job scheduling tools such as CA7, Control-M, or equivalent platforms.
• Experience in legacy system modernization and multi-system data integration.
• Strong technical analysis, root cause analysis, and troubleshooting skills.