CICS z/OS Systems Engineer (CICS Liberty Infrastructure)

Job Description CICS z/OS Systems Engineer (CICS Liberty Infrastructure) Position Details

Role: CICS z/OS Systems Engineer / CICS Liberty Infrastructure Engineer

Experience: 7+ Years

Location: Bangalore / Chennai / Gurgaon

Employment Type: Full-Time

Role Overview

We are seeking a highly experienced CICS z/OS Systems Engineer with strong expertise in IBM CICS System Administration, IBM WebSphere Liberty (CICS Liberty), z/OS infrastructure, and enterprise security integration . The ideal candidate should possess hands-on experience in configuring, administering, and optimizing CICS environments, supporting modern Java runtimes within CICS Liberty, and ensuring secure, high-availability mainframe infrastructure.

The role requires deep expertise in CICS system administration rather than application development , with exposure to enterprise security, performance tuning, troubleshooting, modernization initiatives, and production support.

Key Responsibilities CICS z/OS Administration

• Install, configure, administer, and maintain IBM CICS Transaction Server on z/OS.
• Perform CICS region creation, startup, shutdown, cloning, and maintenance.
• Configure CICS resources including transactions, programs, files, queues, and connections.
• Perform CICS upgrades, patching, and version migrations.
• Monitor and optimize CICS performance across production environments.

IBM WebSphere Liberty (CICS Liberty)

• Install, configure, and administer IBM WebSphere Liberty runtime within CICS.
• Configure Liberty server.xml, JVM profiles, features, and application deployment.
• Deploy Java applications into CICS Liberty runtime.
• Configure SSL/TLS, certificates, and secure communication.
• Troubleshoot Liberty startup, deployment, and runtime issues.

z/OS System Engineering

• Support enterprise z/OS environments.
• Perform system monitoring, capacity planning, and performance tuning.
• Analyze SMF, RMF, and system logs.
• Coordinate with z/OS infrastructure teams during maintenance and upgrades.

Security & Integration

• Implement RACF security for CICS and Liberty environments.
• Configure SAF, SSL certificates, authentication, and authorization.
• Support secure API integration with distributed systems.
• Implement enterprise security policies and compliance requirements.

Modernization & Integration

• Support REST APIs and web services hosted on CICS Liberty.
• Integrate CICS applications with enterprise middleware.
• Support Java-based modernization initiatives on the mainframe.
• Collaborate with distributed application teams for hybrid integration.

Operations & Support

• Provide L2/L3 production support.
• Participate in 24 7 on-call rotation.
• Perform incident, problem, and change management.
• Conduct Root Cause Analysis (RCA) for production incidents.
• Prepare operational documentation and standard operating procedures.

Required Technical Skills Mainframe

• IBM z/OS Administration
• IBM CICS Transaction Server
• CICS System Programming
• CICS System Administration
• CICS Region Administration
• CICS Performance Tuning