What are the responsibilities and job description for the Mainframe Developer position at Wall Street Consulting Services LLC?
Job Title Mainframe Developer
Location New Jersey
Duration 6 months
Primary Skills COBOL
Job Description
We 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 required
Required:
• 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 teams
Preferred:
• 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