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# Mainframe Application Developer - COBOL/DB2

- **Company:** Computer Task Group, Inc
- **Location:** Piscataway, NJ, United States
- **Salary:** $100,000.0 - $110,000.0
- **Contract:** Temporary contract
- **Skills:** Application Programming Interfaces (APIs), Batch Processing, Customer Information Control System (CICS), CLIST, COBOL (Programming Language), Continuous Integration, Data Transformation, IBM DB2, Software Debugging, DevOps, Endevor, Job Control Language (JCL), IBM WebSphere MQ, Rexx (Programming Language), IBM Information Management System, Mainframes, Performance Tuning, Software Maintenance, IBM Resource Access Control Facility, Pl/i, Standard Sql, Software Engineering, SQL Databases, Virtual Storage Access Methods, Z/OS, Tso/ispf, Application Enhancement Tool, File-aid, Git, Information Technology, Database Backup, Jenkins, Control M
- **Published:** September 24, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3402950337&tx=JR11407LFU&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

* COBOL / Enterprise COBOL
 * JCL and DB2 / SQL
 * Mainframe application development and production support
 * CICS / CICS TS, VSAM, IMS DB/TM
 * TSO/ISPF/SDSF and z/OS utilities
 * Endevor/Changeman, CA 7/Control-M
 * Abend analysis, including S0C4, S0C7, S0C9, and SB37
 * REXX/CLIST, IBM MQ, Assembler, PL/I
 * File-AID, Abend-AID, Xpediter
 * Mainframe-to-distributed integration and legacy modernization
 * DevOps/CI-CD, Git/Jenkins, Zowe/z/OSMF

Experience:

 * Experience developing and supporting enterprise mainframe applications.
 * Strong COBOL, JCL, DB2, and SQL experience.
 * Experience with production support, incident resolution, debugging, and batch/online processing.
 * Experience with performance and batch optimization and mainframe application troubleshooting.
 * Knowledge of RACF/mainframe security, API/REST enablement, application discovery, and dependency analysis is a plus.

Education:

Bachelor's degree in Computer Science, Information Technology, or a related field preferred.

Excellent verbal and written English communication skills and the ability to interact professionally with a diverse group are required.

## Description

* Develop, maintain, and support mainframe applications using COBOL, JCL, and DB2.
 * Perform application enhancements, troubleshooting, debugging, testing, and production support.
 * Analyze and resolve production incidents, abends, and batch processing issues.
 * Support batch and online processing and collaborate with technical and business teams.
 * Perform SQL queries, database updates, performance tuning, and application maintenance.
 * Support legacy application modernization, integration, and data transformation initiatives.


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