Sr Mainframe Capacity & Performance Engineer

Job Description: Monitor, analyze, and optimize performance across IBM zSystems mainframe environments. Conduct capacity planning, workload forecasting, resource utilization analysis, and long-range capacity projections. Perform MIPS forecasting using IBM zPCR and z/OS AIOps toolsets. Run application load tests and assess production readiness based on CPU, memory, throughput, and workload metrics. Conduct capacity and performance assessments for production and integration environments, including before-and-after test comparisons. Identify bottlenecks, performance risks, and resource constraints in application and infrastructure performance. Support performance engineering for CICS, DB2, z/OS Connect, WebSphere Application Server (Traditional and Liberty), and IBM MQ. Perform real-time Sysplex, LPAR, and CEC monitoring, root cause analysis, and tuning. Build and maintain automated SAS-based reporting for resource utilization, trending, forecasting, and performance analysis. Produce performance reports, trend analyses, capacity forecasts, and executive recommendations. Create and maintain technical documentation, SOPs, diagrams, and knowledge repositories. Support business resiliency, disaster recovery, data replication, and hybrid cloud initiatives. Participate in modernization efforts, proofs of concept, emerging technology evaluations, Agile activities, and continuous improvement. Recommend system configuration changes to improve performance, availability, and scalability. Support after-hours troubleshooting and problem determination as required. ExperienceRequired Qualifications 7+ years supporting IBM zSystems mainframe performance engineering, capacity planning, forecasting, and systems performance analysis. Analyzing, monitoring, and tuning z/OS and zLinux environments. Application load testing, workload analysis, performance benchmarking, and production readiness assessments. MIPS modeling, trend analysis, capacity forecasting, utilization reporting, and long-term capacity planning. Troubleshooting performance, throughput, response time, and workload management issues in enterprise mainframe environments. Supporting disaster recovery, business resiliency, data replication, and hybrid cloud initiatives on AWS and/or Microsoft Azure. Writing technical documentation, SOPs, analytical reports, performance studies, and executive recommendations. IBM Technologies CICS, DB2, WebSphere Application Server (Traditional and Liberty), IBM MQ, z/OS Connect, Sysplex, LPARs, Coupling Facilities (CF), multi-CEC environments, and data replication technologies. Tools and PlatformsPerformance and capacity: RMF/SMF, zPCR, MICS, MXG, SAS, IntelliMagic Vision, BMC Strobe, Dynatrace, Splunk, Ironstream, and z/OS AIOps solutions Data and scripting: JCL, IBM Utilities, SQL, Oracle/DB2 databases, data analytics and reporting platforms Programming (working knowledge): C++, Java, JavaScript, HTML, SQL, and object-oriented concepts

Microsoft Office: Teams, Outlook, Word, Excel, PowerPoint, SharePoint, Visio, Access Soft SkillsStrong written and verbal communication.

Preferred Qualifications: Experience supporting SSA or other Federal agencies. Experience with large-scale mainframe modernization initiatives. Cloud integration and hybrid cloud architecture experience. SharePoint administration experience. Creating architecture, workflow, systems, and process diagrams in Visio.