Splunk Staff Software Engineer - Performance Optimization & Innovation (PerfOpt)

Cisco · Krakow

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Company
Cisco
Location
Krakow
Employment type
Full-time
Posted
October 7, 2026

About this job

Your Impact Senior performance engineers advise teams on roadmap and architecture, resolve customer performance issues, and set technical direction across partner teams. Lead performance work from hypothesis through instrumentation and design to measured customer impact, coordinating across teams as needed. Design petabyte-scale components for memory, concurrency, I/O, and tail latency, guiding architecture for scalability and reliability. We use profiling, flame graphs, lock contention analysis, benchmarks, and CI regression gates to identify and prevent performance issues. We instrument production with telemetry, eBPF, and continuous profiling to measure performance in real workloads.…

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