Senior Mainframe Engineer

Senior Mainframe Engineer

Location: Plano, TX

Work Mode: Remote

Position Summary: We are seeking a highly skilled Senior Mainframe Engineer with strong expertise in CICS, MQ, and WAS on IBM z/OS environments. The ideal candidate will be responsible for maintaining, supporting, and optimizing mainframe systems, ensuring high availability, performance, and seamless integration with application teams.

Key Responsibilities:

• Install, configure, and maintain CICS Transaction Server and associated third-party software.
• Monitor CICS environments to ensure error-free operation and high availability.
• Perform administrative tasks such as defining new regions, removing obsolete regions, and applying RSU maintenance.
• Upgrade CICS and MQ versions and optimize transaction response times.
• Generate and analyze performance reports, tune system parameters, and improve overall CICS performance.
• Provide support and troubleshooting for MQSeries on z/OS, including installation, upgrade, and maintenance of MQ applications.
• Monitor and manage MQ objects and Queue Managers to maintain subsystem availability.
• Perform backups, delete messages, and manage MQ channels as required by authorized teams.
• Collaborate with application teams for system and application-related region modifications and transaction ABEND analysis.
• Review and maintain automation and dependencies for system tasks.

Required Skills & Qualifications:

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Strong experience in CICS, MQ, and WAS on IBM z/OS environments.
• Expertise in installation, configuration, maintenance, and version upgrades of CICS and MQ.
• Solid understanding of debugging, problem analysis, and system performance tuning.
• Knowledge of mainframe operations, region management, and transaction monitoring.
• Experience in supporting application teams and managing MQ objects and subsystems.
• Excellent communication, problem-solving, and collaboration skills.