Remote Mainframe Developer — COBOL/NATURAL/ADABAS

CAI; Trenton (NJ); Remote; USD 77,000 - 84,000; Full time

Job summary

CAI is seeking an experienced Mainframe Developer to join our IT team. This role is full-time, remote, and contract-based, focusing on COBOL, NATURAL, JCL, and ADABAS with responsibilities across modernization and integration efforts.

You will work on legacy mainframe applications, provide technical analysis, create documentation, and support testing and deployments in a distributed client environment.

Qualifications

• 5+ years of experience developing enterprise mainframe applications using COBOL
• 5+ years of experience with JCL development and job scheduling
• 3+ years of experience with NATURAL/ADABAS
• 5+ years of experience using TSO/ISPF or similar mainframe editing tools
• 3+ years of experience with AFP, PAGEDEF, FORMDEF, and OVERLAY technologies
• Advanced expertise in COBOL, JCL, and NATURAL programming
• Working knowledge of ADABAS database architecture and file structures
• Experience maintaining and enhancing large legacy mainframe systems
• Strong troubleshooting, debugging, and problem-solving skills for batch and online applications
• Experience developing system integrations, data interfaces, file transfers, and data feeds
• Ability to analyze technical specifications, system workflows, and data models
• Experience with mainframe utilities, job monitoring tools, and debugging tools
• Preferred: taxation/revenue/government systems; CICS familiarity; legacy modernization; security and SCM practices

Responsibilities

• Develop, enhance, and maintain COBOL, NATURAL, and JCL programs supporting multiple client projects
• Work on multiple legacy mainframe applications and integration efforts involving taxation and client systems
• Analyze existing mainframe applications and provide code walkthroughs, technical analysis, and documentation
• Design, code, test, implement, and maintain batch and online mainframe applications
• Troubleshoot production issues, job failures, and system abends; perform root cause analysis
• Analyze and support ADABAS databases, file structures, and data access methods
• Develop and maintain data feeds, interfaces, file layouts, and integration processes
• Participate in system design reviews, technical planning sessions, and code reviews
• Create and maintain technical documentation including program specifications and data definitions
• Support system testing, integration testing, UAT, and production deployments

Skills

COBOL

JCL

NATURAL

ADABAS

TSO/ISPF

AFP

PAGEDEF

FORMDEF

OVERLAY

CICS

Job description

CAI is seeking an experienced Mainframe Developer to join our IT team. This role is full-time, remote, and contract-based, focusing on COBOL, NATURAL, JCL, and ADABAS with responsibilities across modernization and integration efforts.

You will work on legacy mainframe applications, provide technical analysis, create documentation, and support testing and deployments in a distributed client environment.