Remote Mainframe Developer - COBOL/NATURAL/ADABAS

CAI; Boston (MA); Remote; USD 77,000 - 84,000; Full time

Job summary

CAI is seeking an experienced Mainframe Developer to join our IT team. This is a full-time, remote, contract position. You will develop, enhance, and maintain COBOL, NATURAL, and JCL programs, supporting multiple client projects and legacy systems.

You will analyze and modernize mainframe applications, support ADABAS databases, and participate in design reviews, testing, and deployments. A strong background in debugging and batch/online processing is required.

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

PAGEDEF

FORMDEF

OVERLAY

debugging

batch processing

system integration

Tools

CICS

Job description

CAI is seeking an experienced Mainframe Developer to join our IT team. This is a full-time, remote, contract position. You will develop, enhance, and maintain COBOL, NATURAL, and JCL programs, supporting multiple client projects and legacy systems.

You will analyze and modernize mainframe applications, support ADABAS databases, and participate in design reviews, testing, and deployments. A strong background in debugging and batch/online processing is required.