Mainframe DB2 System Administrator (Contract) We’re recruiting an experienced Mainframe DB2 System Administrator to support a large, enterprise-scale IBM Z environment. This is a hands-on role focused on DB2 for z/OS system-level administration, availability, performance, and resilience. You’ll work on critical production systems, owning DB2 subsystem health, upgrades, tuning and recovery, while collaborating with infrastructure, security and vendor teams. Key Responsibilities * DB2 for z/OS installation, maintenance and upgrades using SMP/E * Applying PTFs and managing DB2 subsystem lifecycle * Performance monitoring and tuning (ZPARMS, buffer pools, EDM pools) * Backup, recovery and disaster recovery for DB2 catalog and directory * Administration of Broadcom / CA tools (Platinum, SYSVIEW for DB2) * Implementing and managing DB2 security via RACF, ACF2 or Top Secret * Supporting high-availability, production mainframe environments * Client-facing communication and participation in vendor engagements Essential Skills & Experience * Strong experience as a DB2 System Administrator / Systems Programmer * DB2 for z/OS (not LUW or distributed databases) * z/OS internals and mainframe infrastructure * SMP/E installation and maintenance * DB2 performance tuning and subsystem optimisation * Mainframe security tools (RACF, ACF2, Top Secret) * Broadcom / CA tooling experience (SYSVIEW, Platinum) Desirable * IMS installation or DB2/IMS production support * Experience in regulated or enterprise environments Hybrid working. Contract role. Competitive daily rate. Apply now to discuss further details