Senior COBOL Mainframe Developer

Job Purpose

Design, develop, enhance, and maintain reliable enterprise mainframe applications using COBOL, CICS, DB2, and IBM MQ. Contribute to secure, high-quality transaction processing and system integration, working with business and technical teams to deliver maintainable solutions that meet operational and business requirements.

Primary Skills

• Strong hands-on experience in COBOL application development and maintenance in an IBM mainframe environment.
• Practical experience with CICS for online transaction processing and integration with mainframe applications.
• Strong DB2 knowledge, including SQL, data access, query analysis, and troubleshooting.
• Experience with IBM MQ for reliable messaging and integration between applications and systems.
• Experience analyzing requirements, designing technical solutions, coding, debugging, unit testing, and supporting production applications.
• Ability to troubleshoot complex mainframe issues across batch and online processing and identify root causes.
• Understanding of mainframe application integration, transaction processing, performance, and reliability considerations.
• Mandatory prior experience in the healthcare or health insurance domain, with exposure to claims-related systems or processes.
• Ability to participate in code reviews and follow coding standards, secure development practices, and change management processes.

Good to Have

• Experience with JCL, VSAM, batch processing, and mainframe scheduling tools.
• Exposure to healthcare / payer systems.
• Experience in CI/CD or DevOps practices.
• Familiarity with source control and mainframe development tools such as Endevor or Changeman.

Key Responsibilities

• Develop, enhance, maintain, and support mainframe applications using COBOL, CICS, DB2, and IBM MQ.
• Translate functional and technical requirements into reliable, maintainable program changes and technical solutions.
• Develop and maintain online transaction processing and batch components, as required by the application.
• Write and optimize DB2 SQL and troubleshoot data-related issues to support accurate and efficient processing.
• Implement and support IBM MQ messaging flows and investigate integration or message-processing issues.
• Perform unit testing, debugging, impact analysis, and defect resolution across mainframe components.
• Analyze production incidents, identify root causes, and implement fixes while minimizing operational risk.
• Collaborate with analysts, architects, QA, operations, and other developers on design, testing, releases, and issue resolution.
• Participate in code reviews and ensure compliance with development standards, documentation, and change-control processes.
• Support deployment and release activities, validate changes, and provide post-release support when required.
• Identify technical risks and contribute to improvements in application performance, stability, and maintainability.
• To adhere to ISMS Policies and Procedures.