Remote Mainframe Developer - COBOL/NATURAL/ADABAS Expert

CAI; Hagåtña (GU); Remote; USD 77,000 - 84,000; Full time

Job summary

CAI is seeking an experienced Mainframe Developer to join our IT team in a remote, full-time contract role. The position emphasizes COBOL, JCL, NATURAL, and ADABAS, supporting multiple client projects and modernization efforts.

The role involves developing, maintaining, and troubleshooting mainframe programs, collaborating with cross-functional teams to ensure reliable data interfaces, batch processing, and smooth deployments across environments.

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.

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

Mainframe tooling

Job description

CAI is seeking an experienced Mainframe Developer to join our IT team in a remote, full-time contract role. The position emphasizes COBOL, JCL, NATURAL, and ADABAS, supporting multiple client projects and modernization efforts.

The role involves developing, maintaining, and troubleshooting mainframe programs, collaborating with cross-functional teams to ensure reliable data interfaces, batch processing, and smooth deployments across environments.