> Markdown version of [/jobs/ext/4675782-mainframe-developer](https://www.wearedevelopers.com/jobs/ext/4675782-mainframe-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Mainframe Developer

- **Company:** KONNECTINGTREE INC
- **Location:** United States
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, Unit Testing, Batch Processing, COBOL (Programming Language), Data Mapping, Database Applications, File Transfer, Job Control Language (JCL), Systems Analysis, Mainframes, Parsing, Release Management, Software Systems, Virtual Storage Access Methods, File Transfer Protocol (FTP), Control M
- **Published:** November 11, 2026
- **Apply:** https://www.dice.com/job-detail/d4bf3cf8-9032-401e-93b2-cbe05668d00b

## About the Role

* Strong hands-on COBOL, JCL, and batch processing
 * IDMS (schema/subschema, navigation, COBOL integration); ADS/O preferred
 * VSAM (DEFINE/REPRO), GDG management, flat file design and parsing
 * FTP/SFTP file transfer automation
 * Scheduling tools such as CA7 or Control-M
 * Legacy system analysis, data mapping, and root cause analysis
 * Strong written and verbal communication

Preferred

 * Child Support Enforcement, Human Services, or eligibility system experience
 * Large-scale legacy modernization or government project experience
 * Production support, release management, and Agile/hybrid experience

## Description

The State is replacing its aging eligibility platform with a new Eligibility Determination system (EDEN), while the legacy Child Support Enforcement system (ICAR) continues to exchange critical data with it through file-based interfaces and batch processes. The Mainframe Developer will build, test, and support the programs and interfaces that keep both systems working together during the transition., * Develop, enhance, and maintain COBOL and JCL programs that process ICAR-EDEN interface files

 * Modify file layouts, data mappings, transformation logic, and validation routines
 * Enhance batch workflows, GDGs, and VSAM datasets; support IDMS database applications
 * Replace legacy eligibility data sources with EDEN-derived data
 * Perform unit testing and support system, integration, regression, and UAT cycles
 * Create JCL, PROCs, scheduling definitions, and runbooks; support deployments, cutover, and production issues
 * Translate business requirements into technical specifications and collaborate with BAs, testers, and stakeholders