Lead Senior Software Development Engineer for AWS EC2 VPC's packet pipeline, responsible for designing and optimizing ultra-high-performance kernel and embedded C systems processing millions of packets per second. You will mentor junior engineers, lead architecture decisions, conduct design and code reviews, and collaborate across teams to deliver SDN features for EC2 VPC instances. The role requires deep expertise in C/C++, systems-level programming, low-level hardware optimization (including assembly and vectorization), and Linux kernel or embedded development. You must balance hands-on implementation with technical leadership, ensuring best practices and managing day-to-day development activities for a small team.