Ad platform backend engineer @ BlueFocus, working on DSP/RTB systems in Go.
DSP Backend @ BlueFocus -- Working on a Go-based RTB bidding engine with 100ms full-pipeline latency. Day-to-day involves the bidding pipeline (filter chain, CTR/CVR prediction via TF Serving, bid decision), feature engineering on the Serving side, and ad index maintenance.
AI Agent Platform (Side project) -- Building an Agent backend in Go with SSE streaming, and a self-hosted LLM gateway for multi-provider routing.
- Learning CTR/CVR model training: DeepFM, DCNv2, feature engineering
- Reading recommendation system papers, from FM to LLM4Rec
- Moving from pure engineering toward understanding the algorithm side
Core: Go (RTB systems, Agent backend), Python (ML training, data analysis), Java (business services), TypeScript (frontend)
Infrastructure: Kafka, Redis, TF Serving, Thrift/gRPC, Docker, Prometheus, MySQL, HDFS
- Blog: asterzephyr.xyz
- LeetCode: qunqingrihe
- Twitter: @maribeth10770
- Email: hxz2046084122@outlook.com