Senior Mainframe Infrastructure Engineer
DexianDelhi, India3 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 • Delhi, India
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