Remote Mainframe Developer: COBOL/NATURAL Expert

CAI; Montgomery (AL); Remote; USD 77,000 - 84,000; Full time

Job summary

CAI is seeking an experienced Mainframe Developer to join our IT team. The role is remote-based and full-time, focusing on COBOL, NATURAL, JCL, and ADABAS, with work across multiple client projects.

You’ll support legacy systems, guide modernization efforts, and collaborate with cross-functional teams. Required are 5+ years in mainframe development, strong debugging and problem-solving skills, and hands-on experience with ADABAS and TSO/ISPF.

Qualifications

• 5+ years of experience developing enterprise mainframe applications using COBOL
• 5+ years with JCL development and job scheduling
• 3+ years of NATURAL/ADABAS
• 5+ years of experience using TSO/ISPF or similar mainframe editing tools
• 3+ years 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

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 to support modernization teams
• Design, code, test, implement, and maintain new and existing batch and online mainframe applications
• Troubleshoot production issues, job failures, and system abends; perform root cause analysis and implement corrective actions
• Analyze and support ADABAS databases, file structures, and data access methods
• Develop and maintain data feeds, interfaces, file layouts, and integration processes between legacy systems and modernized platforms
• Participate in system design reviews, technical planning sessions, and code reviews
• Create and maintain technical documentation including program specifications, job flows, system architecture diagrams, and data definitions
• Support system testing, integration testing, user acceptance testing (UAT), and production deployments

Skills

Troubleshooting

Debugging

Problem-solving

System integration

Data analysis

Documentation

Tools

COBOL

NATURAL

JCL

ADABAS

TSO/ISPF

AFP

PAGEDEF

FORMDEF

OVERLAY

Job description

CAI is seeking an experienced Mainframe Developer to join our IT team. The role is remote-based and full-time, focusing on COBOL, NATURAL, JCL, and ADABAS, with work across multiple client projects.

You’ll support legacy systems, guide modernization efforts, and collaborate with cross-functional teams. Required are 5+ years in mainframe development, strong debugging and problem-solving skills, and hands-on experience with ADABAS and TSO/ISPF.