Design and implement ultra-high-performance packet processing software for AWS EC2's Nitro System, handling encryption, firewalls, routing, and billing across millions of hosts worldwide. Optimize data structures and low-level hardware tuning to achieve millions of packets per second on single CPU cores using C/C++. Own end-to-end feature design, implementation, integration testing, and production deployment across the global EC2 fleet. Mentor junior engineers and collaborate with cross-functional teams on system architecture, CI/CD validation platforms, and monitoring/diagnostics services.