Job Title: Mainframe DB2 Systems Programmer
Location: Phoenix , AZ
Duration: Long Term Contract
Job Description:
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.
Responsibilities:
DB2 Installation & Configuration
- 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: B2 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: Subsystem failures, 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/directory.
- Strong troubleshooting skills for: System-level DB2 issues, Performance and connectivity problems.
- Proficiency in: JCL, TSO/ISPF, SDSF, 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).
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