Mainframe Developer

Job Title Mainframe DeveloperLocation New JerseyDuration 6 months+Primary Skills COBOLJob DescriptionWe are seeking an experienced Mainframe Developer (COBOL) for a long-term support engagement.• Analyze, design, develop, test, and maintain application code for mission critical mainframe systems within a client application team• Design, code, enhance, and maintain COBOL and NATURAL programs and associated JCL jobs based on functional specifications and enhancement requests• Perform maintenance and enhancements for both batch and online mainframe applications• Troubleshoot and resolve production issues, including job failures, system abends, and root-cause analysis• Develop and maintain data feeds, file layouts, and interface processes between legacy systems and modernized ITS components• Conduct code walkthroughs, logic breakdowns, and technical knowledge transfer for ITS development teams• Create and maintain technical documentation, including program specifications, data definitions, job flows, and system architecture artifacts• Support system, integration, and User Acceptance Testing (UAT) efforts• Participate in design reviews, technical planning sessions, and code reviews• Follow and promote best practices related to coding standards, version control, performance optimization, and change management• Provide ongoing production support for mission-critical applications and participate in issue resolution as requiredRequired:• Minimum 5 years of hands-on COBOL development experience in enterprise mainframe environments• Minimum 5 years of experience with JCL, including job scheduling and batch processing• Minimum 3 years of experience with NATURAL programming• Minimum 3 years of experience with ADABAS, including database structures and file access methods• Strong experience analyzing, maintaining, and enhancing large legacy codebases• Proven ability to troubleshoot and debug batch and online mainframe applications• Experience developing data interfaces, file transfers, and system integrations• Strong understanding of technical specifications, system flows, and data models• Experience with mainframe utilities, job monitoring tools, and debugging tools• Excellent documentation, communication, and collaboration skills• Ability to work independently while coordinating with cross functional technical teamsPreferred:• Experience supporting taxation, revenue, or government systems• Experience with legacy system modernization or data migration initiatives• Knowledge of mainframe security, scheduling systems, and source code management tools• Experience working in large-scale enterprise or public-sector IT environments• Familiarity with TSO/ISPF• Experience with AFP, PAGEDEF, FORMDEF, and OVERLAY for report and print processing