Senior z/OS Mainframe Systems Engineer

HCL Technologies Limited; United States; On-site; USD 120,000 - 180,000; Full time

Job summary

HCL Technologies Limited in the United States is seeking an experienced Senior z/OS System Programmer to support enterprise Mainframe Infrastructure environments. The ideal candidate will have strong expertise in z/OS System Programming, CICS, DB2, RACF, Sysplex/GDPS, and automation.

Responsibilities include installing, configuring, migrating, and maintaining z/OS, managing CICS, DB2, MQ, RACF, JES, USS, and ISV products, and providing 24x7 production support with change management.

Qualifications

• Hands-on experience installing, configuring, migrating, and maintaining z/OS environments.
• Ability to troubleshoot complex issues and perform root cause analysis in enterprise mainframe setups.
• Strong knowledge of workload management, performance tuning, and security with RACF.

Responsibilities

• Installation, configuration, migration, and maintenance of z/OS environments
• Support hardware/software upgrades and regular maintenance (RSUs)
• Manage CICS, DB2, MQ, RACF, JES, USS, and ISV products
• Troubleshoot complex technical issues and perform root cause analysis
• Monitor system performance, capacity planning, and optimization
• Implement backup/recovery strategies and ensure SLA compliance
• Support automation and monitoring solutions across the enterprise
• Participate in 24x7 production support and change management activities

Skills

z/OS System Programming

CICS

DB2

RACF

Sysplex/GDPS

Performance & Capacity Management

Automation

ISV Product Support

JCL

REXX

CLIST

Assembly Language

Mainframe Hardware

LPAR

HMC

Job description

HCL Technologies Limited in the United States is seeking an experienced Senior z/OS System Programmer to support enterprise Mainframe Infrastructure environments. The ideal candidate will have strong expertise in z/OS System Programming, CICS, DB2, RACF, Sysplex/GDPS, and automation.

Responsibilities include installing, configuring, migrating, and maintaining z/OS, managing CICS, DB2, MQ, RACF, JES, USS, and ISV products, and providing 24x7 production support with change management.