available for interesting problems

infra you can trust
your agents to.

I'm Zhengwen. Ten plus years in search and recommendation at Dianping and Xiaohongshu. Now building the cloud layer under Paperboy — agent infrastructure worth trusting with personal context.

§ 01 work

  • 2026 —
    Paperboy · infrastructure engineer

    Cloud stack for proactive agents. UDP, Forest gateway, trust boundaries.

  • 2019 — 2026
    Xiaohongshu · 小红书 · recommendation & ML infra

    Ranking, retrieval, and the platforms underneath.

  • 2013 — 2019
    Dianping · 大众点评 · search platform

    Search infrastructure for local commerce.

  • 2013
    Nanjing University · 南京大学

§ 02 now

Shipping Santi cloud at Paperboy — GKE, gRPC, Terraform. Training for the Yangtze Half. Reading long-horizon agent papers on paper.