Mainframe Developer

Title :Senior Mainframe Developer & Production Support


Location : Remote (EST and CST Only)


Duration : Contract

Job Summary


We are seeking an experienced Senior Mainframe Developer & Support Specialist with strong expertise in IBM z/OS environments. The role involves designing, developing, enhancing, and supporting mission-critical mainframe applications. The ideal candidate will have deep technical skills in COBOL, DB2, JCL, and CICS, along with experience in production support, incident management, and batch scheduling.


Key Responsibilities Development & Enhancement

Design, code, test, and deploy applications using COBOL, JCL, and DB2 (including stored procedures).


Develop and maintain online (CICS) and batch processing systems.


Work with VSAM files, DB2 databases, and file processing utilities (SORT).


Ensure code quality, performance optimization, and adherence to coding standards.


Participate in application modernization and system upgrades where required.

Production Support


Provide L2/L3 production support for mainframe applications.


Troubleshoot and resolve issues related to batch failures, abends, and data inconsistencies.


Support Tivoli Workload Scheduler (TWS) batch job scheduling and monitoring.


Perform root cause analysis (RCA) and implement preventive solutions.


Handle incident, problem, and change management processes.


Integration & Middleware

Work with IBM MQ for message-based integrations.


Support CICS transaction flows and troubleshoot transaction-related issues.


Collaborate with distributed systems teams for end-to-end interface support.


Configuration & Code Management

Use code management tools (e.g., LCM or similar) for version control, migration, and deployment.


Manage code promotion across environments (DEV, QA, PROD).


Ensure proper documentation and audit compliance.


Collaboration & Communication

Collaborate with business analysts, developers, QA teams, and infrastructure teams.


Provide technical guidance and mentoring to junior team members.


Participate in release planning, code reviews, and design discussions.

Required Skills & Technical Expertise


Platform: IBM Mainframe (z/OS)


Programming: COBOL


Database: DB2, DB2 Stored Procedures


Job Control: JCL


File Handling: VSAM


Online Systems: CICS


Schedulers: Tivoli Workload Scheduler (TWS)


Middleware: IBM MQ


Utilities: SORT


Code Management: LCM or equivalent tools


Other Tools/Knowledge: ZWDYL (or similar framework/tools)

Nice to Have


Experience with Hogan Banking System


Exposure to mainframe modernization initiatives


Knowledge of Agile/Scrum methodologies


Automation and scripting for batch/monitoring improvements

Experience & Qualifications


8+ years of experience in Mainframe Development & Support


Strong experience in production support environments (24/7 support model preferred)


Proven ability to troubleshoot complex system issues


Bachelor's degree in computer science, Information Systems, or related field

Key Competencies


Strong problem-solving and analytical skills


Ability to work under pressure in production environments


Excellent communication and documentation skills


Team player with mentoring capability

Work Environment


Require participation in on-call rotation


Support for batch cycles and critical production windows