Principal Core Infrastructure Engineer

What you'll do

• Design and build distributed systems to measure, analyze, and explain network behavior across data centers and WANs.
• Develop algorithms for path reconstruction, congestion triangulation, queue-wait estimation, and fault localization.
• Correlate signals from active probes, routing systems, switch telemetry, and logs to identify network issues.
• Produce confidence-scored diagnoses to localize problems to specific links, devices, or shared resources.
• Convert observability insights into actionable signals for automated traffic steering and congestion mitigation.
• Design control-loop safeguards to manage uncertainty and ensure safe automated actions in the network.
• Build validation frameworks to measure detection accuracy, false-positive rates, and system resilience.
• Write production-grade code in languages such as Java, Go, C++, Rust, or Python.

What we're looking for

• Must be able to read, write, and speak English.
• 6 to 10+ years of experience in distributed systems, network modeling, or telemetry and observability systems (preferred).
• Bachelor’s or Master’s degree in Computer Science, Electrical Engineering, or a related technical field (preferred).
• Advanced programming experience in at least one language such as Java, Go, C++, Rust, or Python.
• Strong knowledge of networking fundamentals including L2/L3 forwarding, BGP, and data center fabrics.
• Strong understanding of algorithms, distributed systems, data structures, and performance engineering.
• Experience with active network measurement, streaming telemetry, graph algorithms, or statistical inference (preferred).
• Familiarity with ML pipelines and AI-assisted development tools across the software development lifecycle (preferred).