Jobs → Engineering → Mainframe Developer

About the Role We are looking for an experienced Mainframe Developer to join the NJ Department of Treasury. This role involves developing, maintaining, and modernizing mission-critical taxation applications using various mainframe technologies. Key Responsibilities • Develop and enhance COBOL, NATURAL, and JCL programs • Maintain batch and online mainframe applications • Troubleshoot production issues, job failures, and system abends • Analyze legacy applications and document program logic and workflows • Support taxation system upgrades, modernization, and integration efforts • Work with ADABAS databases, file structures, and data interfaces • Perform testing, implementation, and production support Requirements • 9+ years of experience in mainframe development • 5+ years of COBOL development • 5+ years of JCL development and job scheduling • 3+ years of NATURAL/ADABAS experience • 5+ years with TSO/ISPF or similar tools • 3+ years of AFP, PAGEDEF, FORMDEF, and OVERLAY technologies • Strong skills in batch/online processing, debugging, and production support • Experience with legacy application maintenance, data feeds, and system integrations • Strong technical documentation and troubleshooting skills