> Markdown version of [/jobs/ext/3974160-high-availability-mainframe-developer](https://www.wearedevelopers.com/jobs/ext/3974160-high-availability-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).

---

# High Availability Mainframe Developer

- **Company:** Computer Task Group, Inc
- **Location:** United States (Remote available)
- **Salary:** $143,520.0 - $153,920.0
- **Contract:** Temporary contract
- **Skills:** Agile Methodology, Application Testing, Customer Information Control System (CICS), COBOL (Programming Language), Code Review, IBM DB2, Software Debugging, Job Control Language (JCL), Mainframes, Scrum Methodology, Application Enhancement Tool, System Availability, Mainframe Programming, Information Technology
- **Published:** October 27, 2026
- **Apply:** https://www.dice.com/job-detail/d5c74da3-9b99-4b82-aec8-7101c8c5d49d

## About the Role

* Strong hands-on development experience with Assembler, CICS, and COBOL.
 * Expertise in mainframe application troubleshooting, debugging, and production support.
 * Knowledge of application testing, implementation, and change management processes.
 * Ability to perform root-cause analysis and resolve complex technical issues.
 * Strong documentation, communication, and collaboration skills.
 * Preferred experience with FIS Systems, Connex, JCL, DB2, Agile/Scrum, or core banking and financial services applications.

Experience:

 * Demonstrated experience developing and supporting mainframe applications in complex, high-availability environments.
 * Experience resolving production incidents, implementing application enhancements, and providing Tier III support.
 * Experience working within an Agile/Scrum team and delivering changes in accordance with established quality standards.

Education:

 * Relevant degree in Computer Science, Information Technology, or a related field preferred, or equivalent practical experience.

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

## Description

* Develop, maintain, enhance, and support business-critical mainframe applications in a high-availability environment.
 * Analyze requirements and implement application code and configuration changes.
 * Provide Tier III production support, troubleshooting, debugging, and root-cause analysis for complex mainframe issues.
 * Test application changes and prepare implementation and rollback documentation.
 * Diagnose escalated production incidents and document resolutions, findings, and corrective actions.
 * Maintain application runbooks and operational documentation.
 * Collaborate with the High Availability Scrum Team to complete development, testing, and production support deliverables.
 * Participate in Agile ceremonies, provide status updates, address code review feedback, and ensure deliverables meet established coding standards and acceptance criteria.