Mainframe DB2 Systems Programmer

Overview We are seeking a highly skilled Mainframe DB2 Systems Administrator to manage and support DB2 for z/OS subsystems in a mission‑critical enterprise environment. This role is responsible for installation, configuration, performance tuning, and overall health of DB2 subsystems, ensuring high availability, security, and optimal performance. Location This role requires employees to live in or around the Phoenix, AZ area. You will be responsible to be onsite 3 days a week. We will consider candidates who are willing to relocate to the area. Responsibilities Install, configure, and maintain DB2 for z/OS subsystems Perform version upgrades, patching (PTFs/APARs), and system maintenance Manage subsystem configuration and initialization parameters Maintain core DB2 components: ZPARMs (DSNZPARM) Buffer pools Logs and BSDS Catalog and directory Performance & Capacity Management Monitor and tune DB2 system‑level performance (CPU, memory, I/O) Optimize Buffer pools Locking and concurrency Thread and connection performance Support capacity planning and performance analysis using DB2 and system tools High Availability & Data Sharing Manage and support DB2 Data Sharing environments (Sysplex) Coupling Facility integration Workload balancing and failover Ensure DB2 availability and resilience through DR strategies System Maintenance & Troubleshooting Analyze and resolve dumps, logs, and abends Connectivity issues affecting DB2 operations Perform root cause analysis and implement preventive actions Support interaction with Batch (JCL) CICS IMS MQ and distributed systems Required Qualifications 7–12+ years of mainframe experience 3–5+ years in DB2 Systems Programming / Administration Experience with IBM DB2 for z/OS and Replication products (Qrep, SQLrep and CDC) - software installation, version upgrades and maintenance, certification testing, documentation of operational procedures, disaster recovery testing Deep knowledge of ZPARMs and subsystem configuration Buffer pools Logs, BSDS, catalog and directory Strong troubleshooting skills for system‑level DB2 issues, performance and connectivity problems Proficiency in JCL, TSO/ISPF, SDSF and SMP/E (preferred) Preferred Qualifications Familiarity with DB2 utilities and performance tools, Monitoring tools (OMEGAMON, MainView) Knowledge of DevOps tools for mainframe (Endevor, ISPW, etc.) Exposure to cloud integration or hybrid architectures Experience with large‑scale DB2 upgrades or migrations, performance optimization initiatives Knowledge of modernization tools (z/OS Connect, APIs) Experience with software support for BMC for DB2 Tools, IBM z/OS Connect, Software AG ADABAS and Natural products Programming experience with REXX Working knowledge of SQL, JIRA, SMP/E, RACF, TCP/IP, network certificates, Splunk Working knowledge of other mainframe subsystems (CICS, IMS, MQ) #J-18808-Ljbffr IPolarity