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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.
Job Responsibility:
Partner with application teams to understand requirements and recommend high‑level database design and implementation approaches
Act as the primary DBA contact for application onboarding, upgrades, and major enhancements
Monitor and optimize DB2 subsystem performance, including CPU, I/O, buffer pools, locking, and query execution
Analyze and resolve performance issues using tools such as Omegamon, EXPLAIN, RMF, SMF, and native DB2 utilities
Perform SQL performance tuning and index optimization in collaboration with development teams
Plan and execute DB2 maintenance activities including PTFs, service packs, and version upgrades
Monitor database health, performance metrics, and security events using built‑in and third‑party tools
Configure alerts and proactively identify risks, bottlenecks, and improvement opportunities
Ensure high availability, reliability, and compliance for critical production systems
Requirements:
5–10 years of hands‑on experience as a DB2 for z/OS DBA in large enterprise environments
Strong experience supporting mission‑critical, 24x7 production systems
Deep knowledge of DB2 z/OS architecture, subsystems, utilities, logging, and recovery
Proven expertise in SQL tuning, execution plan analysis, and performance optimization
Experience with DB2 monitoring tools such as Omegamon and mainframe performance metrics
Strong understanding of z/OS concepts, including datasets, JCL, batch processing, and scheduling
Experience coordinating across cross‑functional teams on large‑scale initiatives
Solid understanding of SOX audit requirements and database security best practices
Nice to have:
Experience in manufacturing or highly regulated enterprise environments
Strong communication skills with the ability to explain technical concepts to non‑DBA stakeholders
Proactive mindset with a focus on stability, performance, and continuous improvement