Senior Mainframe Performance Engineer

Artifintech; Alpharetta (GA); On-site; USD 150,000 - 200,000; Full time

Job summary

Artifintech is seeking a senior mainframe performance engineer to monitor and optimize z/OS systems across multi-processor, multi-LPAR, and Parallel Sysplex environments. You will use RMF, MICS, and other tools to analyze trends, detect issues, and tune workloads.

The role requires 12+ years of mainframe experience, strong data analysis skills, and proficiency in JCL, DB2, and scripting (REXX/Python). Collaboration with operations, development, and infrastructure teams is essential.

Qualifications

• 12+ years of mainframe systems experience with proficiency in performance management for large, multi-processor, multi-LPAR, Parallel Sysplex environments utilizing z/OS.
• Proven experience in mainframe performance monitoring, observability, capacity management, and data analysis.
• Proven experience resolving systems performance problems in real-time via adjustments to WLM and batch initiators.
• Deep expertise with SMF/RMF data, WLM service definitions, and z/OS workload behavior.

Responsibilities

• Monitor real-time z/OS system health and performance across CPU, memory, DASD, and WLM-managed workloads, using tools including RMF, SmartIS, MICS, and other internal tools.
• Analyze performance data to identify trends, bottlenecks, and potential issues.
• Detect, troubleshoot, and resolve resource anomalies, workload misbehaviors, and degradation risks in production systems.
• Develop and implement performance tuning strategies by recommending changes to service definitions, dispatching priorities, and workload placement.
• Contribute to capacity planning by forecasting and modeling workload resource demand & capacity requirements.
• Support cost modeling, vendor reporting (SCRT), infrastructure sizing and resource optimization efforts.

Skills

Mainframe performance monitoring

z/OS knowledge

WLM tuning

JCL

REXX/Python

Excel

PowerPoint

DevOps

Education

Bachelor’s degree in information systems, Mathematics, Finance or another quantitative subject

Tools

RMF

MICS

PR/SM

DB2

Git

Job description

Artifintech is seeking a senior mainframe performance engineer to monitor and optimize z/OS systems across multi-processor, multi-LPAR, and Parallel Sysplex environments. You will use RMF, MICS, and other tools to analyze trends, detect issues, and tune workloads.

The role requires 12+ years of mainframe experience, strong data analysis skills, and proficiency in JCL, DB2, and scripting (REXX/Python). Collaboration with operations, development, and infrastructure teams is essential.