Mainframe Administrator

Ipolarity LLC

Hanover, NJ, United States

26 days ago

Role details

Contract type

Permanent contract

Employment type

Part-time (≤ 32 hours)

Experience level

Experienced

Experience required

3 years minimum

Working hours

Regular working hours

Job source

www.indeed.com

Tech stack

Adaptable Database Systems Application Programming Interfaces (APIs) JIRA Customer Information Control System (CICS) Computer Programming System Configuration Data Sharing IBM DB2 DevOps Distributed Systems Endevor IBM Parallel Sysplex

+18 more

Monitoring of Systems Job Control Language (JCL) Rexx (Programming Language) Mainframes Performance Tuning IBM Resource Access Control Facility Standard Sql Subsystems System Programming TCP/IP Management of Software Versions Z/OS Tso/ispf Connectivity Problems System Availability Omegamon Cloud Integration Splunk

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., 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

Requirements

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)