Mainframe Engineer

Mainframe Engineer

Atlanta, GA

Job Description

Must Have Technical/Functional Skills

In-depth knowledge and hands-on experience with z/OS operating system installation, configuration, and maintenance.

Proven experience with major z/OS upgrades

Extensive experience with the installation and support of various ISV products from vendors such as Broadcom/CA, BMC, IBM, and Rocket Software

Hands-on experience with IBM Z mainframe hardware including CPCs, LPAR configuration, HMC/SE operation, IOCDS/IODF management, FICON channels, OSA, Coupling Facility structures, and hardware upgrades or migration

Understanding of automation tools such as OPS/MVS, System Automation, Automation Point, and integration of alerts/monitoring across enterprise operations

Familiarity with ZEKE Scheduler to support operations teams and diagnose JES/workload issues.

Exposure to large enterprises or regulated environments.

Roles & Responsibilities Plan, prepare, and execute z/OS operating system upgrades

Apply IBM PTFs and APARs to maintain system integrity and resolve reported issues

Monitor z/OS system health, performance, and resource utilization using tools like RMF, SMF, TMON and SAS

Install, configure, upgrade, and maintain a wide range of ISV products (e.g., Broadcom/CA, BMC, IBM, Rocket Software, etc.)

Have good understanding and experience on Hardware Configuration Definitions / IOCP and HMC Management and WLM management.

Collaborate with vendors for problem resolution, licensing, and technical support.

Ensure compatibility and integration of ISV products with the z/OS environment.

Manage and maintain critical system datasets (e.g., SYSRES, Page datasets, SMF datasets).

Provide expert-level support for mainframe incidents, including problem determination, diagnosis, and resolution in a timely manner.

Analyze system performance data to identify bottlenecks and recommend improvements.

Tune various z/OS components, WLM (Workload Manager), and ISV products to optimize resource utilization and application performance.

Support DR planning, setup, IPL testing, replication technologies (e.g., GDPS), and DR event execution.

Analyze system logs, sysout, dumps, and diagnostic data for complex issues

Participate in on-call rotation for 24/7 support of critical systems.