Mainframe Middleware Infrastructure Engineer; CICS Liberty

Position: Mainframe Middleware Infrastructure Engineer (CICS Liberty)
Location: South East London

Mainframe Middleware Infrastructure Engineer (CICS Liberty) 6-12 Month Contract | London or Edinburgh | Hybrid (2-3 Days Onsite) | Excellent Day Rate We're looking for an experienced Mainframe Middleware Infrastructure Engineer with strong expertise across CICS, z/OS and IBM Web Sphere Liberty to support a major enterprise transformation programme. This role focuses on the engineering, configuration, optimisation and support of modern Java workloads running within CICS Liberty environments.

Key

Skills & Experience:

Deep knowledge of CICS systems engineering and z/OS infrastructure CICS region setup, configuration and JVM server management IBM Web Sphere Liberty administration and runtime configuration Java workload management, JVM tuning and performance optimisation RACF, TLS, certificates, keyrings and security integration REST/API enablement and modern integration practices Problem determination using dumps, traces, logs and SMF data Capacity planning, resilience, HA/DR and operational support

Experience with CI/CD pipelines, automated deployments and release processes Monitoring, observability and middleware operational management This is an excellent opportunity to work on critical banking and financial services infrastructure whilst helping modernise core mainframe platforms with contemporary Java and API technologies. 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.