Ruizhen Mai

I'm Ruizhen, a software engineer at Citadel Securities working on research platform and data infrastructure. Before that, I spent four years at TikTok building the search engine, from GPU serving and LLM inference to low-latency ranking systems in C++ and large-scale vector search. I also interned at Snowflake, where I built a release risk scoring model using LSTMs. Ask me about LLM inference and GPU serving, search engine architecture, large-scale data pipelines, and distributed systems.