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# Mainframe Production Support

- **Company:** Ascii Group, LLC
- **Location:** Chicago, IL, United States
- **Experience:** Expert
- **Salary:** $124,800.0
- **Contract:** Temporary contract
- **Skills:** Batch Processing, Software Bug Management, Customer Information Control System (CICS), COBOL (Programming Language), Databases, Data Retrieval, IBM DB2, Software Debugging, Job Control Language (JCL), Mainframes, Performance Tuning, Query Optimization, SQL Stored Procedures, Virtual Storage Access Methods, Transaction Processing (Computing), File-aid, Sql Tuning, Control M
- **Published:** August 11, 2026
- **Apply:** https://www.dice.com/job-detail/26073407-92ee-464c-9031-8edd8aa3d87c

## About the Role

* Core Mainframe Technologies: 10+ Years COBOL, JCL, VSAM, CICS
 * Database & Query Optimization: IBM DB2 for Mainframe, SQL Performance Tuning, Stored Procedures
 * Operations & ITSM: Production Support, Incident Management, Problem Management, Change Control, Root Cause Analysis (RCA)
 * Domain Knowledge: Fund Accounting or Securities Lending / Capital Markets

Preferred Qualifications

 * Industry certifications in Mainframe Administration, DB2 Database Administration, or ITIL v3/v4 Foundation.
 * Hands-on experience with automated batch schedulers (CA-7, Control-M, or OPC/TWS) and debugging tools (Xpediter, File-AID, Endeavor).

## Description

Seeking a 10+ years experienced Mainframe Production Support Specialist for a 100% on-site role in Chicago, IL.
The ideal candidate will possess deep expertise supporting mission-critical batch and real-time transaction applications built on COBOL, JCL, DB2, CICS, and VSAM. Responsibilities include L2/L3 production ticket resolution, batch job monitoring and optimization, DB2 performance tuning, root cause analysis (RCA), and techno-functional support within Fund Accounting or Securities Lending financial domains., * Production Support & ITSM Management: Provide L2/L3 production support for enterprise mainframe applications, driving incident, problem, and change management following standard ITSM practices.

 * Batch Processing & JCL Optimization: Monitor, troubleshoot, and optimize batch JCL jobs, scheduling workflows, and file management operations across high-volume environments.
 * DB2 & Real-Time Transaction Support: Manage and optimize DB2 queries, stored procedures, and CICS online programs for real-time transaction processing and data retrieval.
 * Incident Resolution & RCA: Analyze batch failures, debug complex COBOL/VSAM issues, perform root cause analysis, and implement permanent bug fixes.
 * Domain & Stakeholder Alignment: Partner with cross-functional teams to align application capabilities with Fund Accounting and Securities Lending business requirements.


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