Mainframe DB2 Systems Administrator

Job Title: Mainframe DB2 Systems Programmer

Location: Phoenix, AZ, Charolette, NC & Plano, TX

Duration: Long Term

Mainframe DB2 Systems Programmer:

• 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.
• 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:

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:
• 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:

• 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)