Z/OS Mainframe Capacity & Performance Lead

FIS Management Services LLC; United States; On-site; USD 112,000 - 190,000; Full time

Job summary

FIS seeks a capacity planning specialist to lead forecasting and performance management for enterprise z/OS mainframe environments. You will analyze utilization across CPU, memory, storage, and network, building models to forecast demand and guide infrastructure modernization.

You will collaborate with engineering, operations, and business stakeholders to translate workload trends into actionable capacity strategies and executive reporting.

Qualifications

• Bachelor’s degree or equivalent practical experience in information technology, computer science, or a related field.
• Experience supporting and analyzing IBM z/OS mainframe environments.
• Strong expertise in capacity planning, performance analysis, and infrastructure forecasting.
• Proficiency interpreting system performance metrics and workload utilization data.
• Knowledge of mainframe architecture, processor technologies, storage, and subsystem performance.
• Experience with capacity management, trend analysis, statistical modeling, and reporting tools.
• Ability to communicate technical findings to business and technology stakeholders.
• Strong analytical, problem-solving, and data-driven decision‑making skills.

Responsibilities

• Analyze CPU, memory, storage, network, and workload utilization across z/OS environments.
• Develop short-term and long-term capacity forecasts using historical and predictive analysis techniques.
• Monitor performance trends and identify risks impacting availability, throughput, and scalability.
• Create capacity models supporting business growth, application changes, and infrastructure modernization.
• Partner with engineering and operations teams to optimize system performance and resource utilization.
• Evaluate workload characteristics and recommend tuning opportunities for improved efficiency.
• Prepare executive and operational reporting on capacity consumption, trends, and future requirements.
• Support budget planning through infrastructure demand forecasting and capacity recommendations.
• Assess the capacity impact of new applications, platform upgrades, and technology initiatives.
• Maintain capacity planning standards, documentation, metrics, and governance processes.

Skills

Capacity planning

Performance analysis

IBM z/OS

Forecasting

Data-driven decision making

Education

Bachelor’s degree in IT/CS or related field

Tools

SMF

CMF

MXG

SAS

MICS

Job description

FIS seeks a capacity planning specialist to lead forecasting and performance management for enterprise z/OS mainframe environments. You will analyze utilization across CPU, memory, storage, and network, building models to forecast demand and guide infrastructure modernization.

You will collaborate with engineering, operations, and business stakeholders to translate workload trends into actionable capacity strategies and executive reporting.