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# Mainframe Developer (zOS Environment

- **Company:** ITTCONNECT INC
- **Location:** Columbus, OH, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Customer Information Control System (CICS), COBOL (Programming Language), IBM DB2, Job Control Language (JCL), Z/OS, Real Time Data, Apache Kafka, Api Design, Api Management, Legacy Systems
- **Published:** June 24, 2026
- **Apply:** https://www.dice.com/job-detail/3be88714-b870-463e-9ee4-dfa6ce92ade7

## About the Role

* 8+years of hands-on mainframe development experience
 * Strongexpertise in:

 * COBOL
 * JCL
 * DB2
 * CICS

Provenexperience supporting production systems and critical applications

Experienceworking in large enterprise environments (preferably utilities,banking, or insurance)

Strongdebugging and problem-solving skills in complex legacy environments, * Utilities industry experience.

## Description

This role sits at the intersection of legacy system stability and modern platform enablement, where core mainframe applications are being API-enabled and integrated into an AI-driven utility platform. You will play a key role in ensuring that foundational systems are scalable, reliable, and ready to support real-time data access and service exposure., * Ownand support a core mainframe application (MACSS) across production,enhancements, and project initiatives

 * Developand maintain applications using COBOL, JCL, DB2, and CICS
 * Troubleshootand resolve production issues across batch and online systems
 * Collaboratewith API and platform teams to enable integration via z/OS Connectservices
 * Supportdata flows and service exposure to downstream platforms (APIM, Kafka,etc.)
 * Participatein system design discussions to support modernization and integrationefforts
 * Ensureperformance, reliability, and scalability of legacy systems

Why This Role Matters

This position is critical in enabling the organization's transition to a modern, API-driven architecture by ensuring the stability and scalability of its core legacy systems.


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