Mainframe IMS programmer - radient.ai

Remote

Job Description Mainframe IMS programmer

Position Overview

We are seeking an experienced Mainframe IMS (Information Management System) Specialist to support, maintain, and enhance IMS environments running on IBM z/OS. The role involves working with both IMS DB (database) and IMS TM (transaction manager) to ensure high availability, performance, and reliability of critical enterprise applications.

Key Responsibilities

Design & Development

• Design, develop, and maintain applications using IMS DB/DC, COBOL, PL/I, Assembler, JCL.
• Create and optimize IMS database structures (HDAM, HIDAM, HALDB, DEDB).
• Develop and maintain IMS transactions, message queues, and APIs.
• Implement and support integration with other mainframe subsystems (CICS, DB2, MQ, etc.).

System Administration & Support

• Install, configure, and maintain IMS subsystems (DB, TM, BMPs, MPPs).
• Manage IMS utilities for database reorg, backup/recovery, and performance tuning.
• Monitor IMS logs, queues, and buffers to ensure optimal performance.
• Troubleshoot abends, system failures, and transaction issues.

Performance & Security

• Perform IMS database tuning (buffer pools, locking, indexing).
• Ensure transaction throughput meets SLA requirements.
• Implement RACF and IMS security features for data protection.
• Participate in DR/BCP planning and testing for IMS systems.

Collaboration & Documentation

• Work closely with application developers, system programmers, and DBAs.
• Provide production support and on-call assistance for IMS-related issues.
• Document database schemas, transaction flows, and system procedures.

Required Qualifications

• Bachelor s degree in Computer Science, Information Technology, or related field (or equivalent experience).
• 5+ years of experience in IMS DB/DC environments on IBM z/OS.
• Proficiency in COBOL, JCL, Assembler, PL/I, REXX.
• Strong knowledge of IMS database types (HDAM, HIDAM, HALDB, DEDB).
• Experience with IMS utilities (DFSORT, DBRC, IMS Connect, HALDB utilities).
• Hands-on experience with IMS TM (MPP, BMP, IFP regions, message queues).

Preferred Skills

• Experience in IMS modernization (APIs, SOA, integration with distributed systems).
• Knowledge of DB2, CICS, MQ, and interaction with IMS.
• Familiarity with automation, monitoring, and performance tuning tools.
• Exposure to DevOps, CI/CD, or modernization frameworks in mainframe environments.

Soft Skills

• Strong analytical and troubleshooting skills.
• Ability to work under pressure in mission-critical environments.
• Good communication and collaboration across technical teams.

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