Senior DB2 z/OS Mainframe Admin - Hybrid/Remote Options

IPolarity LLC; Whippany (NJ); Hybrid; USD 110,000 - 155,000; Full time

Job summary

IPolarity LLC is seeking a highly skilled Mainframe DB2 Systems Administrator to manage DB2 for z/OS subsystems in a mission-critical enterprise environment. You will install, configure, and tune DB2 components to ensure high availability, security, and optimal performance.

You will collaborate with Batch, CICS, IMS, MQ and distributed systems teams, perform performance and capacity management, and implement disaster recovery strategies to maintain DB2 resilience.

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).
• Deep knowledge of ZPARMs and subsystem configuration.
• Strong troubleshooting for system-level DB2 issues.
• Proficiency in JCL, TSO/ISPF, SDSF.

Responsibilities

• DB2 Installation & Configuration: Install, configure, and maintain DB2 for z/OS subsystems; perform upgrades and maintenance; manage initialization parameters.
• Performance & Capacity Management: Monitor and tune system-level performance; optimize buffer pools, locking, and concurrency; support capacity planning.
• High Availability & Data Sharing: Manage DB2 Data Sharing environments (Sysplex); coupling facility integration; load balancing and DR strategy implementation.
• System Maintenance & Troubleshooting: Analyze and resolve subsystem failures, dumps, logs, abends, connectivity issues; perform root cause analysis.
• Support interaction with Batch (JCL), CICS, IMS, MQ and distributed systems.

Skills

DB2 for z/OS

Mainframe administration

JCL/TSO/ISPF

Performance tuning

CICS/IMS/MQ

Troubleshooting

Tools

QRep

SQLrep

CDC

Endevor

ISPW

OMEGAMON

MainView

SMP/E

z/OS Connect

Job description

IPolarity LLC is seeking a highly skilled Mainframe DB2 Systems Administrator to manage DB2 for z/OS subsystems in a mission-critical enterprise environment. You will install, configure, and tune DB2 components to ensure high availability, security, and optimal performance.

You will collaborate with Batch, CICS, IMS, MQ and distributed systems teams, perform performance and capacity management, and implement disaster recovery strategies to maintain DB2 resilience.