Senior z / OS Administrator

Job Title : Senior z / OS Administrator

Experience Required : 8–10 years

Job Summary :

We are seeking an experienced z / OS Administrator to manage, maintain, and optimize our IBM mainframe environment. The role involves ensuring system availability, performance tuning, security management, and providing technical support for business-critical applications running on z / OS.

Key Responsibilities :

• Administer and support IBM z / OS mainframe systems, including installation, configuration, and maintenance.
• Perform system upgrades, patching, and integration with related subsystems (CICS, DB2, IMS, MQ, RACF, etc.).
• Monitor system performance and implement tuning measures for optimal efficiency.
• Manage system security and access controls (RACF / ACF2 / Top Secret).
• Troubleshoot and resolve complex system and infrastructure issues.
• Support disaster recovery planning, testing, and implementation.
• Collaborate with application, network, and storage teams to ensure seamless operations.
• Prepare and maintain system documentation, procedures, and operational standards.
• Provide mentoring and guidance to junior team members.

Required Skills & Qualifications :

Education :