DB2 z/OS DBA

Our client is a leader in their industry and this is a long-term, multi-year assignment.

We are seeking an experienced Senior DB2 z/OS Database Administrator to support and optimize critical enterprise database environments. This role serves as a primary DBA partner for application teams, providing technical guidance, performance tuning, and operational support for high‑availability production systems.

The ideal candidate brings deep expertise in DB2 for z/OS, strong performance and tuning skills, and experience supporting complex environments with 24x7 availability requirements.

Key ResponsibilitiesPartner with application teams to understand requirements and recommend high‑level database design and implementation approachesAct as the primary DBA contact for application onboarding, upgrades, and major enhancementsMonitor and optimize DB2 subsystem performance, including CPU, I/O, buffer pools, locking, and query executionAnalyze and resolve performance issues using tools such as Omegamon, EXPLAIN, RMF, SMF, and native DB2 utilitiesPerform SQL performance tuning and index optimization in collaboration with development teamsPlan and execute DB2 maintenance activities including PTFs, service packs, and version upgradesMonitor database health, performance metrics, and security events using built‑in and third‑party toolsConfigure alerts and proactively identify risks, bottlenecks, and improvement opportunitiesEnsure high availability, reliability, and compliance for critical production systems