Lead design and development of an end-to-end 5G/6G baseband/reference stack; implement and optimize baseband functions in C/C++/Python/CUDA for CPU/GPU/DPU systems; diagnose and resolve performance bottlenecks (CPU, GPU, NIC); support system integration, performance testing, demonstrations and customer field trials. Requires ~8+ years industry experience and background in wireless communications/DSP and PHY/MAC/baseband software.