Senior Mainframe COBOL & Batch Developer - Data Integration

Skywalk Global; Des Moines (IA); On-site; USD 90,000 - 130,000; Full time

Job summary

Skywalk Global in Des Moines, IA seeks a Mainframe Developer for a 6-month modernization effort linking ICAR with the new EDEN system. The role focuses on COBOL/JCL development, IDMS data management, and batch processing to ensure seamless data exchange.

You will analyze requirements, design interfaces, develop, test, and support deployment and production activities alongside analysts and technical teams.

Qualifications

• Hands-on mainframe development experience.
• Strong expertise in COBOL, JCL, and batch processing.
• Experience with IDMS or comparable mainframe database technologies.
• Experience with VSAM datasets and file-processing applications.
• Demonstrated experience supporting application integrations and data exchange processes.
• Experience analyzing and modifying legacy systems.
• Strong verbal and written communication skills.
• Ability to work independently and collaboratively in a team environment.

Responsibilities

• Mainframe Application Development
• Develop, enhance, and maintain COBOL and JCL programs that process interface files between ICAR and EDEN.
• Modify file layouts, data mappings, transformation logic, and validation routines based on business and technical requirements.
• Enhance batch processing workflows, GDG structures, and VSAM datasets to support evolving integration requirements.
• Support modernization efforts by replacing legacy eligibility data sources with EDEN-derived data.
• Maintain and troubleshoot existing production processes and interfaces.
• Technical Analysis and Design
• Translate business and functional requirements into technical design specifications.
• Analyze existing mainframe applications and integration points to determine impacts of system changes.
• Modify and support applications that interact with IDMS databases.
• Perform detailed record-level and field-level analysis of inbound and outbound interfaces.
• Identify dependencies and risks of parallel legacy and modern systems.
• Create and maintain technical documentation and interface designs.
• Testing and Quality Assurance
• Develop unit test scenarios and execute testing of mainframe applications and batch jobs.
• Support system, integration, regression, and user acceptance testing.
• Investigate and resolve defects; validate end-to-end data processing.
• Deployment and Operational Support
• Create and maintain JCL, procedures, scheduling definitions, and runbooks.
• Support deployment activities and cutover planning.
• Troubleshoot production incidents and data discrepancies.
• Collaboration and Communication
• Partner with PMs, BAs, developers, testers, and stakeholders; participate in design reviews and sprint planning.

Skills

COBOL programming

JCL

VSAM datasets

IDMS database

Batch processing

Data transformation

ADS/O experience

Mainframe development

Tools

CA7

Control-M

Job description

Skywalk Global in Des Moines, IA seeks a Mainframe Developer for a 6-month modernization effort linking ICAR with the new EDEN system. The role focuses on COBOL/JCL development, IDMS data management, and batch processing to ensure seamless data exchange.

You will analyze requirements, design interfaces, develop, test, and support deployment and production activities alongside analysts and technical teams.