MQ and WAS Senior Middleware Engineer 6 month contract with likely extension Inside IR35 via Umbrella Remote based Join a major transformation initiative modernising critical infrastructure across a large, well-established technology portfolio. We''re looking for an experienced MQ and WAS Senior Middleware Engineer to support a long-term migration programme moving legacy SLES and Oracle Linux environments onto Red Hat Enterprise Linux (RHEL) on GCVE. This is a key engineering role within a 60-person delivery portfolio, working across 30+ projects and collaborating closely with architects, platform teams and application support teams. About the Programme You''ll be joining a strategic programme addressing operational risk by migrating approximately 27% of the organisation''s Unix server estate to RHEL. The initiative follows an incremental, agile PI-planning delivery model and runs alongside BAU upgrade workstreams. You''ll play a central role in platform engineering, application deployment, performance tuning and automation to support successful delivery of this multi-year migration. What You''ll Be Doing Install and Configure Middleware: IBM WAS (ND/Liberty), IBM HTTP Server, WebSphere Portal, MQ upgrades, and OS migration to RHEL.Deploy and Support Applications: Deploy enterprise applications (EAR/WAR), configure JDBC providers and JMS queues.Troubleshooting: Provide expert diagnostic support and root-cause analysis across complex distributed environments.Performance and