Capacity and Performance Manager

Atos is the Atos Group brand dedicated to AI-powered, secure, end-to-end digital services. Atos designs, develops, and operates critical digital environments that drive performance, resilience and sovereignty, helping public and private organizations worldwide retain control over their data and infrastructures, while meeting regulatory requirements. With more than 52,000 employees serving over 4,500 clients across 54 countries, Atos helps modernize core IT systems, accelerate cloud and data transformation, strengthen cybersecurity, and deliver secure digital workplace environments to support its clients, its employees and society.

Atos also provides consulting and advisory services through its Atos Amplify brand.

Atos Group is a global leader in digital transformation with c. The Capacity and Performance Manager ensures that mainframe capacity and performance meet current and future business needs while optimizing cost and resource utilization. This role analyzes capacity and performance data, trends, incidents, thresholds, and forecasts to proactively identify constraints and prevent system overload.

The role ensures that IT component capacity is sufficient to meet required service levels, optimizes utilization of existing resources, and provides recommendations to the GTD Capacity Coordinator and Capacity Director regarding capacity requirements, demand forecasts, performance improvements, and appropriate service levels. Perform capacity planning as needed, typically for specific hardware or software platforms. Gather and analyze business demand, workload, utilization, and forecast data required to develop capacity plans.

Review capacity and performance reports, assess risks and opportunities, and recommend actions to the Capacity Director or GTD Capacity Coordinator.



Ensure that monitoring levels for resource capacity and system performance are adequate and that data recorded in capacity management databases are kept up to date and utilized by the capacity management process. Forecast trends in component usage based on available data.

Produce technical and management reports at regular intervals detailing actual component utilization, trends, and forecasts. Monitor the potential effects of software and middleware on hardware utilization, or vice versa, to determine performance management service levels. Evaluate current hardware and software that could improve the efficiency of the capacity management process.

Verify that reliability, availability, and disaster recovery requirements are considered in capacity planning activities. Reduce software costs (4RHA, MSU). Obtain performance and capacity information to facilitate incident or problem resolution or to analyze the impact of changes.

Degree or equivalent experience in Computer science, systems, or related field.

Languages: English – Fluent; French – Fluent (professional working proficiency) 5+ years in a z/OS mainframe environment Experience in capacity planning, performance, or operations Experience in mission-critical environments (public sector or large enterprises) Key technical skills SMF/RMF data analysis MXG / Excel / Power BI Trend analysis and capacity forecasting Understanding of IBM software costs (MSU-based) performance Takes ownership of capacity and performance outcomes, driving actions through completion to achieve service, performance, and cost objectives. Anticipates capacity and performance risks, identifies root causes, and implements solutions before service or business operations are impacted. Uses data and sound judgment to prioritize issues, evaluate trade-offs, and recommend timely, effective actions.

Builds alignment across technical and business teams to drive decisions, resolve issues, and deliver measurable improvements. Formal mainframe training or relevant technical certifications. Automation / scripting (REXX, Python)" Here at Atos, diversity and inclusion are embedded in our DNA.

Atos is a recognized leader in its industry across Environment, Social and Governance (ESG) criteria.

📌 Performance Monitoring Manager (M/F) (Mississauga)
🏢 Atos
📍 Mississauga