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# Mainframe Developer

- **Company:** Lorven Technologies Inc
- **Location:** New York, NY, United States
- **Contract:** Permanent contract
- **Skills:** Customer Information Control System (CICS), COBOL (Programming Language), IBM DB2, Job Control Language (JCL), Mainframes, Virtual Storage Access Methods, Transaction Processing (Computing)
- **Published:** September 3, 2026
- **Apply:** https://www.dice.com/job-detail/a3bc8089-2ecc-4254-bf0b-a93de1719e79

## About the Role

* Strong Mainframe development experience COBOL JCL DB2 CICS VSAM
 * Handson expertise with Fiserv PEP
 * Solid knowledge of ACH payments NACHA formats and ACH processing workflows
 * Ability to troubleshoot payment failures processing bottlenecks and settlement reconciliation issues from both technical and functional perspectives
 * Strong analytical problem solving and communication skills

## Description

Experienced Mainframe Developer with strong expertise in Fiserv PEP and ACH Payments Responsible for maintaining and enhancing the PEP application implementing technical and functional changes supporting production issues and ensuring smooth ACH transaction processing, * Support maintain and enhance Fiserv PEP applications

 * Develop and implement technical and business driven changes using COBOL JCL DB2 VSAM and related mainframe technologies
 * Analyze and resolve ACH processing issues defects and production incidents
 * Understand end to end ACH payment flows settlement returns corrections and exception processing
 * Work with NACHA file formats ACH rules and transaction processing requirements
 * Perform root cause analysis and coordinate resolutions with business and operations teams