GL Global

Mainframe CICS/MQ Administrator - Contract (UK Remote) We are seeking a Mainframe CICS/MQ Administrator to support a major enterprise environment. This role involves managing CICS transaction systems and IBM MQ messaging platforms, ensuring performance, reliability, and seamless integration across business-critical workloads. Responsibilities Install, upgrade, and maintain CICS and IBM MQ products. Configure and administer CICS architecture, BMS, transaction processing, and macro-level commands. Manage MQ queues, channels, and connectivity, with monitoring and troubleshooting expertise. Tune systems for performance, reliability, and scalability. Monitor workloads with RMF, SDSF, and SMF. Implement and enforce security controls via RACF, encryption, and access policies. Plan and execute backup, recovery, and disaster recovery drills. Integrate CICS/MQ with DB2, IMS, APIs, and z/OS Connect Middleware. Troubleshoot dumps, logs, and anomalies to resolve incidents quickly. Produce clear technical documentation, runbooks, and change-control records. Candidate Profile Experience administering CICS and IBM MQ in enterprise Mainframe environments. Strong knowledge of transaction processing systems and messaging Middleware. Skilled in performance tuning, troubleshooting, and integration with DB2, IMS, and APIs. Familiarity with RACF and security management in CICS/MQ. Clear communicator, effective collaborator, and detail-oriented.

Mainframe IMS Engineer - Contract - Fully remote We are seeking a Mainframe IMS Engineer to support enterprise-scale IMS environments. This role involves delivering product upgrades, configuration, database management, and performance tuning within a complex z/OS landscape. Responsibilities Install, upgrade, and maintain IMS software (including usermods, RSUs, and feature enhancements). Configure and administer IMS/TM, IMS/DB, and connectivity with CICS, DB2, and MQ. Define and maintain IMS databases (DBDs, PSBs, DL/I utilities). Support system upgrades using SMP/E and z/OSMF. Tune IMS performance: buffer pools, logging, threading, and transaction throughput. Troubleshoot transaction failures, lock contention, and communication issues. Manage backup/recovery strategies and IMS restarts. Document runbooks, architecture diagrams, and change-control records. Collaborate closely with developers, DBAs, and infrastructure teams. Experience Extensive IMS engineering experience in enterprise Mainframe environments. Strong expertise in IMS/TM, IMS/DB, and z/OS system integration. Skilled in Cobol, Assembler exits, REXX Scripting, and automation. Proven experience with CICS configuration, subsystem connectivity, and SMP/E maintenance.