Mainframe Technical Specialist

Job Summary

Seeking an experienced Mainframe Technical Specialist to serve as a senior technical expert supporting enterprise mainframe environments. The ideal candidate will possess deep expertise in IBM Mainframe technologies including z/OS, CICS, DB2, IMS, JCL, Endevor, and SQL, along with strong troubleshooting, performance tuning, and release management experience. Exposure to middleware technologies and MQ is highly desirable.

This role requires a hands-on professional capable of supporting mission-critical applications, optimizing system performance, managing software releases, and collaborating with development and infrastructure teams to ensure operational excellence.

Key Responsibilities

• Provide technical leadership and support for IBM Mainframe environments running on z/OS.
• Administer and support CICS regions, including configuration, troubleshooting, debugging, and performance optimization.
• Support DB2 databases and related tools/utilities, ensuring high availability and optimal performance.
• Analyze, evaluate, and optimize complex SQL queries to improve application performance and reduce processing costs.
• Provide configuration management and release management support utilizing Endevor.
• Support IMS environments and associated application processing.
• Develop, maintain, and troubleshoot JCL processes and batch workloads.
• Collaborate with application developers and infrastructure teams to resolve production issues.
• Perform system analysis, root cause investigations, and performance tuning activities.
• Support middleware technologies and MQ messaging environments as needed.
• Create and maintain technical documentation, procedures, and operational standards.

Required Qualifications

• Experience working in IBM Mainframe environments.
• Strong knowledge of z/OS operating system, architecture, functionality, and subsystem interactions.
• Experience providing configuration management and release management support using Endevor.
• Experience with SQL programming and database query optimization.
• Experience supporting DB2 tools and utilities.
• Experience evaluating and optimizing complex SQL queries.
• Extensive experience with CICS administration, troubleshooting, debugging, and performance tuning.
• Strong experience with IMS, JCL, and batch processing environments.
• Ability to troubleshoot production issues independently and provide effective solutions.
• Experience with middleware technologies.
• Experience supporting IBM MQ/MQ Series.
• Knowledge of software development lifecycle (SDLC) and change management processes.
• Experience supporting large-scale enterprise environments.
• Familiarity with automation, monitoring, and performance management tools within the mainframe ecosystem.
• Excellent communication and documentation skills.