Mainframe Middleware Engineer - 6-Month Contract - Hybrid (London, or Edinburgh)
- Hiring Organisation
- Hamilton Barnes
- Location
- London, United Kingdom
- Employment Type
- Contract
- Contract Rate
- GBP 400 Daily
Responsibilities Provide deep systems engineering expertise across CICS running on z/OS, including runtime behavior and infrastructure design Configure, maintain, and optimize IBM WebSphere Liberty within CICS (CICS Liberty runtime) Design and support secure, scalable, and resilient CICS Liberty environments aligned with enterprise standards Manage integration patterns, including … performance tuning, and high availability/disaster recovery (HA/DR) Proven problem determination skills using dumps, traces, SMF data, and logs Expertise in WebSphere Liberty configuration (server.XML, features, shared libraries) JVM tuning on z/OS (heap sizing, garbage collection behaviour) Experience managing Java workloads within CICS ...