Mainframe Developer- Remote

Job Overview

We are seeking an experienced Mainframe Developer to support a major legacy system modernization initiative involving the integration of an existing legacy application with a new statewide eligibility platform.

The consultant will be responsible for developing, enhancing, testing, and maintaining COBOL programs, JCL jobs, batch processes, and file-based interfaces to ensure accurate and reliable data exchange between legacy and modern systems.

Key Responsibilities

• Develop, modify, and maintain COBOL programs and JCL batch jobs.
• Build and enhance file-based interfaces between legacy and modern applications.
• Modify file layouts, data mappings, transformation logic, and validation routines.
• Work with VSAM datasets, GDG structures, and batch processing workflows.
• Analyze and support IDMS databases, including schema and subschema navigation.
• Troubleshoot production issues, batch failures, and data discrepancies.
• Perform unit, system, integration, regression, and UAT testing.
• Support system deployment, migration, cutover, and production activities.
• Maintain technical documentation, program specifications, and operational procedures.
• Collaborate with business analysts, architects, testers, and technical teams.

Required Technical Skills

• Strong hands-on experience with COBOL and JCL.
• Experience with mainframe batch processing and production support.
• Hands-on experience with VSAM datasets and GDG management.
• Experience with IDMS databases, including schema and subschema concepts.
• Knowledge of flat-file processing, data mapping, and file transformations.
• Experience with FTP/SFTP and automated file transfers.
• Familiarity with CA7, Control-M, or similar job scheduling tools.
• Experience supporting legacy system integrations and modernization projects.
• Strong analytical, troubleshooting, and communication skills.

Preferred Qualifications

• Experience with ADS/O and IDMS-COBOL integration.
• Experience in Child Support Enforcement or Human Services systems.
• Background in government eligibility or public assistance systems.
• Experience with large-scale legacy modernization initiatives.
• Knowledge of Agile or hybrid project environments.
• Experience with release management and production deployment.