Senior Mainframe Infrastructure Engineer
DexianBengaluru, Karnataka, India2 days ago
Job description10+ years of total mainframe systems experience, with 6+ years focused on performance engineering and capacity planning. Proven expertise in mainframe performance monitoring, observability, and tuning in large multi-LPAR, multi-processor Parallel Sysplex environments. Strong hands-on experience with WLM (Workload Manager) , SMF / RMF data , and z / OS performance tools . Proficiency in COBOL, JCL, and DB2 (for understanding workloads, not development). Strong knowledge of batch processing and job scheduling . Excellent data analysis and visualization skills using MS Excel and PowerPoint . Strong communication and presentation skills to engage global teams and leadership. Python scripting for automation or data analysis. REXX and / or Java experience on mainframe. Exposure to DevOps pipelines or Git-based deployment. Experience with iZPCA , MICS , ADABAS , or IBM SCRT reporting tools. Prior experience in retail, telecom, or healthcare domains (BFSI not mandatory).
Key Responsibilities
- Monitor and analyze real-time z / OS system health and performance across CPU, memory, DASD, and WLM-managed workloads using tools such as RMF, SMF, IzPCA, SmartIS, and MICS .
- Detect, troubleshoot, and resolve resource anomalies, workload degradation, and system bottlenecks .
- Drive performance tuning initiatives by adjusting WLM service definitions, dispatching priorities, and workload placements.
- Contribute to capacity planning — forecasting and modeling workload resource demands and optimizing infrastructure utilization.
- Support cost modeling, vendor reporting (SCRT) , and infrastructure sizing.
- Analyze and visualize performance data to create dashboards, KPIs, and executive summaries using Excel (Pivot Tables, PowerPivot, VLOOKUPs) and PowerPoint .
- Collaborate with infrastructure, DevOps, and operations teams to ensure optimal workload performance and provide technical insights.
- Participate in on-call rotations and contribute to the migration of performance / capacity tools to Git / DevOps pipelines .
Required Skills & Experience
Good-to-Have Skills
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Senior Infrastructure Engineer • Bengaluru, Karnataka, India
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