Senior Runtime Engineer

Design and develop high-performance distributed runtime software for training and inference workloads at unprecedented scale. Build and optimize data, communication, and execution pipelines that efficiently utilize CPU, memory, storage, and network across heterogeneous clusters. Collaborate with ML and compiler teams to integrate new model architectures and hardware optimizations, and diagnose performance issues using profiling and instrumentation. Shape system architecture reviews, roadmap planning, and end-to-end model execution efficiency.