<p>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.</p><p>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.</p><p><br></p><p>Key Responsibilities</p><ul><li>Partner with application teams to understand requirements and recommend high‑level database design and implementation approaches</li><li>Act as the primary DBA contact for application onboarding, upgrades, and major enhancements</li><li>Monitor and optimize DB2 subsystem performance, including CPU, I/O, buffer pools, locking, and query execution</li><li>Analyze and resolve performance issues using tools such as Omegamon, EXPLAIN, RMF, SMF, and native DB2 utilities</li><li>Perform SQL performance tuning and index optimization in collaboration with development teams</li><li>Plan and execute DB2 maintenance activities including PTFs, service packs, and version upgrades</li><li>Monitor database health, performance metrics, and security events using built‑in and third‑party tools</li><li>Configure alerts and proactively identify risks, bottlenecks, and improvement opportunities</li><li>Ensure high availability, reliability, and compliance for critical production systems</li></ul>

<p>Required Qualifications</p><ul><li>5–10 years of hands‑on experience as a DB2 for z/OS DBA in large enterprise environments</li><li>Strong experience supporting mission‑critical, 24x7 production systems</li><li>Deep knowledge of DB2 z/OS architecture, subsystems, utilities, logging, and recovery</li><li>Proven expertise in SQL tuning, execution plan analysis, and performance optimization</li><li>Experience with DB2 monitoring tools such as Omegamon and mainframe performance metrics</li><li>Strong understanding of z/OS concepts, including datasets, JCL, batch processing, and scheduling</li><li>Experience coordinating across cross‑functional teams on large‑scale initiatives</li><li>Solid understanding of SOX audit requirements and database security best practices</li></ul><p>Preferred Qualifications</p><ul><li>Experience in manufacturing or highly regulated enterprise environments</li><li>Strong communication skills with the ability to explain technical concepts to non‑DBA stakeholders</li><li>Proactive mindset with a focus on stability, performance, and continuous improvement</li></ul>

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