Mainframe Assembler developer

Key Responsibilities

• Design, develop, enhance, and maintain mainframe applications using COBOL.
• Develop and maintain JCL for application execution, batch processing, and job scheduling.
• Develop and support CICS online transaction processing applications.
• Work extensively with DB2 for SQL development, data access, and database-related troubleshooting.
• Read, understand, debug, and maintain existing Assembler/HLASM programs and components.
• Analyze business and technical requirements and translate them into technical solutions.
• Perform coding, unit testing, integration testing, debugging, and production support.
• Analyze application failures, abends, performance issues, and production incidents.
• Work with cross-functional teams including business analysts, QA, infrastructure, and production support teams.
• Participate in code reviews and ensure adherence to development and quality standards.
• Prepare technical documentation and support application releases and deployments.
• Troubleshoot complex issues across COBOL, CICS, DB2, JCL, and Assembler components.

Required Technical Skills

• Strong hands-on experience with COBOL
• Strong experience with JCL
• Strong experience with CICS
• Strong experience with DB2
• Working experience with Assembler / HLASM
• Good understanding of IBM z/OS mainframe environment
• Experience with mainframe batch and online processing
• Strong knowledge of SQL
• Experience with debugging, abend analysis, and production support
• Understanding of mainframe development and SDLC processes