> Markdown version of [/jobs/ext/4251051-senior-mainframe-developer](https://www.wearedevelopers.com/jobs/ext/4251051-senior-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).

---

# Senior Mainframe Developer

- **Company:** ACUTE TRADING LLC
- **Location:** Jersey City, NJ, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Application Performance Management, Batch Processing, Customer Information Control System (CICS), COBOL (Programming Language), Static Program Analysis, Databases, IBM DB2, DB2 SQL, Software Debugging, DevOps, Distributed Systems, Middleware, Job Control Language (JCL), Job Scheduling, Mainframes, Performance Tuning, Release Management, Reverse Engineering, Software Deployment, Software Engineering, SQL Stored Procedures, SQL Databases, System Testing, Virtual Storage Access Methods, Web Services, Transaction Processing (Computing), Data Processing, Database Performance, Information Technology, Cloud Integration, Code Restructuring, Control M
- **Published:** October 25, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=d96eeb4bf84bfb59

## About the Role

* Experience: 10+ years of overall IT experience, with a heavy focus on mainframe development.
 * Core Technologies: Strong hands-on development experience with COBOL, JCL, DB2, VSAM, and CICS.
 * Scheduling Tools: Experience with Control-M, CCS, or other mainframe job scheduling tools.
 * Database: Experience with DB2 SQL, stored procedures, and database performance optimization.
 * Systems: Strong understanding of batch processing and high-volume transaction processing systems.
 * Location: Must be a local candidate to the Jersey City, NJ area. Non-local candidates will not be considered.
 * Work Setup: Must be available to work onsite in Jersey City, NJ, four (4) days per week.

Nice-to-Have Skills

 * Basic knowledge of APIs, middleware, and web services.
 * Exposure to mainframe modernization initiatives.
 * Familiarity with distributed systems and cloud integration.
 * Knowledge of DevOps practices in mainframe environments.

## Description

In this role, you will be responsible for analyzing existing mainframe applications, identifying dependencies, improving application performance, and supporting modernization and integration initiatives. The ideal candidate will have extensive experience in mainframe application development, legacy code analysis, production support, and system enhancement., * Analyze, review, and reverse-engineer existing mainframe applications to identify dependencies, inefficiencies, and opportunities for improvement.

 * Design, develop, test, debug, and maintain COBOL-based applications.
 * Develop, execute, and maintain JCL scripts for batch processing and job execution.
 * Work with DB2 databases, utilizing SQL queries, stored procedures, and performing performance tuning.
 * Develop and maintain VSAM files and related data processing routines.
 * Support CICS transaction processing and integration with existing mainframe applications.
 * Manage and monitor batch jobs using Control-M, CCS, or similar enterprise scheduling tools.
 * Troubleshoot production issues, perform root-cause analysis, and implement permanent fixes.
 * Participate in application enhancements, legacy modernization, code refactoring, and integration initiatives.
 * Collaborate with business analysts, QA teams, architects, and cross-functional technical teams.
 * Support system testing, QA/UAT, release management, and production deployments.