Principal System Db2 Software Engineer - Remote

Optum is a global organization that delivers care aided by technology to help millions of people live healthier lives. The company is seeking an experienced z/OS System Db2 Infrastructure Software Engineer to manage installation, configuration, lifecycle support, performance tuning, disaster recovery, and operational support across enterprise mainframe environments.

Responsibilities:

• Install, maintain, configure, and manage the full product lifecycle of Db2 software and related Db2 ISV software tools in a large z/System environment
• Configure and use SMP/E to manage system software, apply vendor fixes (HIPER, PTFs, APARs, Service Packs), and execute software upgrades across Dev, Test, and Production environments
• Manage Db2 logging, storage groups, buffer pool performance tuning, and System Recovery / Disaster Recovery capabilities including GDPS integration
• Define and maintain Data Sharing environments, including DB2 SysPlex and subsystem incorporation into LPAR IPLs
• Monitor enterprise z/System performance using tools such as Omegamon, MXG, and Splunk to proactively research root causes and optimize subsystem stability
• Leverage enterprise-approved AI productivity tools to analyze system data, recap technical discussions, automate tasks, and recommend solutions
• Participate in 24x7 on-call rotation and provide technical support during critical incident response ("War Room") scenarios
• Generate technical documentation for Operations and Technical Help Desk teams to ensure seamless operational support and post-implementation validation

Requirements:

• 15+ years of experience configuring SMP/E, managing Db2 logging, executing disaster recovery (including GDPS), allocating storage groups, and supporting Db2 SysPlex environments
• 10+ years of mainframe systems experience, with a focus on Db2 Software Administration and Product Lifecycle Management (PLM) in large z/System environments (90,000+ MIPs, multiple LPARs, Multiple SysPlex)
• Experience using enterprise z/System monitoring tools (Omegamon, MXG, Splunk) and participating in ITSM processes (Incident, Change Management)
• Experience applying all types of vendor Db2 fixes and managing support tickets with software vendors
• Experience leveraging enterprise-approved AI tools and digital assistants to analyze data, streamline daily workflows, and draft communications
• Proficiency with z/OS fundamentals, including TSO/ISPF, JCL job stream creation/modification, zFS file systems, and dataset allocations (PDS/PDSE, VSAM)
• Ability to participate in a 24x7 on-call rotation and work effectively under pressure in cross-functional incident response scenarios
• Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent practical experience)
• Experience automating administrative processes using zOSMF
• Familiarity with Configuration Manager and enterprise Db2 ISV software (BMC AMI, AbendAid for DB2, FileAid, DASDManager Plus, High-Speed Apply Engine, High Performance Unload, Db2 Log Analysis Tool)
• Familiarity or working awareness of Qlink Replication across non-z/System environments