What are the responsibilities and job description for the Performance Engineer – Mainframe z/OS position at Excelon Solutions?
Performance Engineer – Mainframe z/OS
Location: Jersey City, NJ
Work Model: Hybrid – 3 Days Onsite Required
Compensation: Up to $200,000 Base Bonus/Profit Sharing
This is a senior-level, enterprise-facing performance and capacity planning role within a large-scale z/OS environment. The ideal candidate will bring deep systems-level understanding of mainframe performance tuning, workload management, and capacity forecasting in high-demand production environments
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Position Overvie
w
The Performance Engineer will be responsible for analyzing, tuning, and optimizing z/OS system performance across mission-critical global infrastructure
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This role is heavily data-driven and requires strong expertise in SMF analysis, SAS programming, workload modeling, and enterprise performance diagnostics
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You will work closely with systems programming, infrastructure, and operations teams to ensure stability, scalability, and forward-looking capacity planning
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Core Responsibilitie
s
• Perform enterprise-level z/OS performance analysis and tunin
g • Conduct capacity planning and forecasting across CPU and I/O utilizatio
n • Analyze SMF records to identify system bottleneck
s • Evaluate and implement Workload Manager (WLM) policy change
s • Interpret RMF Monitor data and system metric
s • Utilize OMEGAMON and other diagnostic tools (including Freeze Frame
) • Develop and maintain performance reporting using MICS and MX
G • Write and maintain SAS programs for performance data analysi
s • Support global production systems in a high-demand, multi-tasking environmen
t
Required Expertis
e
• Strong knowledge of z/OS performance and tunin
g • Proven experience in mainframe capacity plannin
g • Deep understanding of CPU and I/O analysi
s • Advanced SAS programming skills (required
) • Experience with MICS and MXG reporting tool
s • RMF Monitor and OMEGAMON expertis
e • Strong understanding of WLM policies and tunin
g • Ability to manage competing priorities in enterprise environment
Salary : $150,000 - $200,000