Performance Engineer

We are looking for a Senior Performance Engineer to own the performance posture of Gcore’s Edge Network – from defining testing strategy and observability, to shipping latency improvements at fleet scale. You will operate at the intersection of systems engineering, network infrastructure, and developer experience, enabling teams to move fast without breaking performance.

What You’Ll Do:

• Define and continuously evolve the performance testing strategy. Ensure test workloads mirror production traffic patterns, regression suites remain green, and alerts are acted upon with documented runbooks.
• Instrument the edge fleet for deep observability – latency histograms, resource saturation signals, and tracing pipelines – so performance regressions surface before they reach end users.
• Design and enforce staged (A/B, canary) rollout processes for performance-sensitive changes. Own the feedback loop between test environments and production.
• Identify and drive systemic throughput, latency, and efficiency improvements across the edge network – from kernel tuning and eBPF offloads to traffic shaping and caching strategy.
• Continuously raise the bar on configuration management, agentic workflows, and automated performance gates. Reduce toil; increase signal-to-noise in performance data.
• Guide ops, dev, and support engineers through technical direction, runbooks, and shared test environments. Raise the performance literacy of the broader engineering org.
• Partner with Product, R&D, Network, Security, and Support teams to ship performance-aware features. Serve as a subject-matter expert during performance-related incidents and drive post-incident improvements.