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# Mainframe COBOL Developer

- **Company:** Index Systems Inc.
- **Location:** Indianapolis, IN, United States
- **Experience:** Experienced
- **Salary:** $78,900 - $110,100
- **Contract:** Permanent contract
- **Skills:** Microsoft Access, Batch Processing, Business Software, Customer Information Control System (CICS), COBOL (Programming Language), Code Review, Information Systems, Databases, Data Mining, IBM DB2, Software Debugging, Network Interface Controllers, Job Control Language (JCL), Mainframes, Online Transaction Processing, Software Engineering, Terminal Emulators, Virtual Storage Access Methods, Z/OS, Enterprise Data Management, File Transfer Protocol (FTP), Software Modules, Test Scripts, Information Technology, Code Testing, Database Monitoring, Legacy Systems
- **Published:** October 23, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=566ad0bc9e42a855

## About the Role

* Bachelor's degree in Computer Science, Information Systems, or related field (or equivalent work experience)
 * 8+ years of experience in COBOL programming
 * 4+ years of experience with JCL, VSAM, DB2, and CICS
 * Experience with mainframe debugging tools and utilities

Required Skills and Competencies:

 * Working knowledge of COBOL, IBM MVS JCL, and related mainframe technologies
 * Familiarity with mainframe terminal emulation tools
 * Understanding of mainframe architecture and operating systems (z/OS, MVS)
 * Experience with batch processing and online transaction processing
 * Ability to analyze and resolve technical issues with guidance
 * Knowledge of STIG compliance requirements
 * Experience with FTP and SFTP protocols
 * Familiarity with Help Desk ticketing systems
 * Ability to create and maintain technical documentation
 * Basic experience with database monitoring and data extraction
 * Knowledge of software development methodologies
 * Good debugging and problem-solving skills
 * Ability to work as part of a team
 * Good communication skills, both written and verbal
 * Time management skills with ability to meet deadlines

Clearance Requirement:
Secret security clearance, * COBOL: 10 years (Required)

## Description

INDEX systems is seeking a skilled COBOL Developer to join our team. This role is critical in maintaining and enhancing legacy systems while supporting modernization initiatives within production and potential development/testing environments. The ideal candidate has extensive experience in COBOL programming and mainframe environments, with a strong understanding of business applications.

The COBOL Developer will maintain, enhance, and support business applications written in COBOL.
Principal responsibilities include but are not limited to:

 * Write and modify COBOL, COBOL Language Extender (COBOL LE), and IBM MVS JCL code
 * Use tools such as DISA Multi-host Internet Access Portal (MIAP) and Reflection ZFE for 3270 terminal emulation
 * Troubleshoot and fix production issues under guidance of senior team members
 * Assist in creating and maintaining technical documentation including:
 * Application operating and installation instructions
 * Interface diagrams and product design documentation
 * Interface Control Documents (ICD) for the Corporate Data Repository System (CDRS)
 * Perform code testing and participate in code reviews
 * Support FTP and SFTP transmission operations
 * Implement Help Desk resolutions for Level II and III tickets
 * Apply STIGs to applications as directed to ensure compliance
 * Monitor database load and interface applications
 * Provide technical support for the maintenance of data and related software modules
 * Work with Change Requests (CR) and Deficiency Reports (DR) in the Information System Management Tool (ISMT)
 * Support system releases, including documentation preparation
 * Participate in team meetings and scrum ceremonies
 * Create test cases and assist with test reports and summaries