Solar Performance Improvement Engineer responsible for improving the availability and efficiency of EDPR solar assets. Collaborating across teams to promote best practices and achieve operational excellence.
About the role
- Application Performance Engineer responsible for detailed diagnostics and performance tuning on IBM Mainframe with emphasis on SQL and application optimization in a hybrid-friendly environment.
Responsibilities
- Perform detailed application performance diagnostics using: Strobe (CPU, I/O, storage path analysis), DB2 Visualizer (SQL activity, statement-level cost analysis)
- Analyze execution profiles to isolate code‑level inefficiencies, high‑cost SQL, and suboptimal DB2 access paths
- Recommend improvements in access paths, indexing, SQL rewrites, and DB2 statistics health
- Review and tune applications written in COBOL, Java, Python, and Go running in the z/OS environment
- Support teams in optimizing batch and online workloads for CPU/MSU reduction and throughput improvement
- Diagnose issues related to CPU contention, memory growth, VSAM/DB2 I/O bottlenecks, and thread/transaction delays
Requirements
- 12+ years experience as an Application Performance Engineer on IBM Mainframe
- Expert proficiency with Strobe, DB2 Visualizer/DB2 Performance Tools, SMF-based exception reporting
- Strong understanding of SQL, DB2 processing internals, and DB2 performance tuning
- Hands-on experience with COBOL, Java, and scripting languages such as Python, Go
- Proficiency with JCL, REXX, and z/OS utilities
- Solid working knowledge of Parallel Sysplex architecture and performance considerations.
Benefits
- Flexible, supportive environment
- Well-being prioritized
- Dynamic, hybrid-friendly culture
- Access to cutting-edge learning opportunities
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
No Education Requirement
Tech skills
Location requirements
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