Remote Mainframe Developer - COBOL, NATURAL, ADABAS

CAI; Montpelier (VT); Remote; USD 77,000 - 84,000; Full time

Job summary

CAI is seeking an experienced Mainframe Developer with advanced expertise in COBOL, JCL, and NATURAL, and working knowledge of ADABAS. This full-time remote contract role sits with our IT team and supports multiple client projects.

You will develop, troubleshoot, and maintain mainframe applications, participate in design reviews, and ensure quality documentation and deployments. The position requires 5+ years of mainframe experience and a strong problem-solving mindset.

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.

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

COBOL

JCL

NATURAL/ADABAS

TSO/ISPF

AFP/FormDef/Overlay

Tools

TSO/ISPF

ADABAS tools

Job description

CAI is seeking an experienced Mainframe Developer with advanced expertise in COBOL, JCL, and NATURAL, and working knowledge of ADABAS. This full-time remote contract role sits with our IT team and supports multiple client projects.

You will develop, troubleshoot, and maintain mainframe applications, participate in design reviews, and ensure quality documentation and deployments. The position requires 5+ years of mainframe experience and a strong problem-solving mindset.