Mainframe CICS & Z/oS

Mainframe Middleware Infra Engineer – CICS Liberty

📍 London / Edinburgh | Hybrid (1-2 days onsite) Flexiable

📅 6 Month Contract

💷 Strong market rates available

We’re looking for a seasoned Mainframe Middleware Infrastructure Engineer with deep expertise across CICS Liberty, z/OS and modern Java runtime environments. This is a hands-on infrastructure engineering role focused on stability, scalability, security and modernisation within enterprise banking environments.

Key experience required:

• Strong CICS Systems Engineering background across z/OS

• CICS Liberty / IBM WebSphere Liberty runtime configuration and support

• JVM tuning, diagnostics and performance optimisation on z/OS

• RACF, TLS, SAF integration and enterprise security controls

• REST/API enablement and modern integration patterns

• Operational monitoring, logging, dumps, traces and SMF analysis

• Experience managing JVM server lifecycle within CICS

• CI/CD awareness and automated deployment practices

• High availability, DR planning and capacity management

For more information and direct contact with me, please send me an email and call only if required. I will be sure to check responses daily and shortlist the best candidates; if you are shortlisted, you will hear from me.

Robert@gazellegc.com

+44 7506151904