Mainframe Programmer

IPolarity

Mainframe IMS System Programmer supporting IBM z/OS IMS environments for a financial services company. Managing stability, availability, performance, and security for IMS DB and IMS TM subsystems.

Posted 7/16/2026full-timePhoenix • Arizona, Florida, Illinois, New Jersey, North Carolina, Texas, Virginia • 🇺🇸 United StatesSeniorLeadWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in managing and supporting IBM z/OS IMS environments, ensuring system stability, performance optimization, and effective troubleshooting. Proficient in IMS DB and IMS TM administration, with a strong focus on integration with DB2, CICS, and other distributed systems.

Highest-signal resume keywords

IBM z/OS Operating SystemIMS DB AdministrationIMS TM AdministrationPerformance OptimizationTroubleshooting Skills

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

DBD ManagementPSB ManagementACB ManagementBuffer Pool TuningIMS UtilitiesBackup/Recovery StrategiesSMP/EJCLTSO/ISPFSysplex Understanding

Soft Skills

Strong Troubleshooting Skills

Tools & Technologies

ServiceNowITILRACF Security ControlsMQCICSTCP/IP

Industry Keywords

High Availability ArchitecturesDisaster Recovery TestingTechnical DocumentationSystem Configuration

Tech Stack

Tools & technologies

Distributed SystemsServiceNowTCP/IP

About the role

Key responsibilities & impact

Support and manage IBM z/OS IMS environments
Ensure the stability, availability, performance, and security of IMS DB and IMS TM subsystems
Install, configure, and maintain IMS DB and IMS TM subsystems on IBM z/OS
Perform version upgrades, maintenance, and patching to ensure system currency and stability
Manage and maintain IMS system definitions, including DBDs, PSBs, ACB libraries, and control regions
Configure and tune buffer pools, parameters, and system resources to optimize performance
Monitor IMS database and transaction performance, proactively identifying and resolving performance bottlenecks
Troubleshoot and resolve system issues by analyzing logs, dumps, abends, and database errors
Support IMS utilities, backup/recovery processes, and disaster recovery testing
Ensure seamless integration with z/OS, DB2, MQ, CICS, TCP/IP, and Sysplex environments
Implement and follow ITIL/ServiceNow change management processes for all system updates
Maintain accurate technical documentation and system configurations

Requirements

What you’ll need

7+ years of experience with IBM z/OS operating system
Hands-on experience with IMS DB and IMS TM administration
Deep knowledge of: DBD/PSB/ACB management IMS control regions and transaction processing
Buffer pool tuning and performance optimization
Experience with IMS utilities, backup/recovery, and DR strategies
Strong troubleshooting skills (dump analysis, log analysis, abend resolution)
Experience integrating IMS with: DB2, CICS, MQ, and distributed systems
Familiarity with RACF security controls for IMS environments
Experience with SMP/E, JCL, TSO/ISPF, SDSF
Understanding of Sysplex and high availability architectures

Benefits

Comp & perks

Flexible work from home options