Mainframe Developer- Remote

HonorVet Technologies; Des Moines (IA); Remote; USD 83,000 - 131,000; Full time

Job summary

HonorVet Technologies is seeking an experienced Mainframe Developer (COBOL/JCL/IDMS) for a remote, 6‑month contract to modernize a statewide eligibility platform. You will develop COBOL programs, JCL jobs, and batch processes, and build file-based interfaces to ensure reliable data exchange between legacy and modern systems.

Responsibilities include testing, troubleshooting, and supporting deployment activities, with emphasis on file transformations, VSAM/GDG management, and IDMS subschema

Qualifications

• Experience developing and supporting COBOL/JCL on mainframe systems.
• Proven ability to modify and maintain batch processes and file interfaces.
• Familiarity with IDMS databases, VSAM datasets, and GDG structures.
• Strong problem-solving, testing, and documentation skills.

Responsibilities

• Develop and maintain COBOL programs and JCL batch jobs.
• Build and enhance file-based interfaces between legacy and modern apps.
• Modify data mappings, layouts, and transformation logic.
• Work with VSAM datasets, GDG structures, and batch workflows.
• Analyze IDMS schemas and subschemas; support DB access.
• Troubleshoot production issues and batch failures.
• Perform unit, system, integration, and UAT testing.
• Support deployment, migration, cutover, and production activities.
• Maintain technical documentation and procedures.
• Collaborate with business analysts, architects, testers, and teams.

Skills

COBOL

JCL

Mainframe batch processing

VSAM

GDG management

IDMS databases

Data mapping

File transformations

FTP/SFTP

Job scheduling (CA7/Control-M)

Legacy system integrations

Analytical troubleshooting

Communication

Tools

CA7

Control-M

FTP/SFTP

Job description

HonorVet Technologies. We're a Service Disable Veteran-Owned IT staffing firm, ISO 9001 and ISO 27001 certified, working with federal agencies, state governments, and Fortune 500 enterprise clients across the US. What makes us different isn't a tagline; it's the way we work. We don't forward resumes and hope for the best. We take the time to understand where a professional like you is headed and only reach out when we genuinely believe there's a fit worth exploring.

Job Title: Mainframe Developer (COBOL / JCL / IDMS)

Location: Remote

Duration: 6 Months Work Type: Contract/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.

If you are interested, feel free to reach out to me directly at [e-mail]