• 2022.05 – 2025.08 · Le Fu Interactive — Senior Backend Engineer (Platform)

    • Refactored SDK onboarding templates; cut integration time from ~7 days to ~4 days.
    • Supported two game launch peaks with code reviews, load testing, Feishu alerts, Grafana monitoring; kept SDK services stable.
    • Championed Cursor/AI tooling in the team to speed up delivery.
    • Built an n8n + AI reconciliation assistant; saved finance/engineering ~2 hours per month.
    • Helped maintain “Qianmu” ad system and async jobs for more stable user acquisition.

  • 2019.06 – 2022.04 · Mengtui (Shanghai Tujin Network) — Mid-level PHP & Junior Go Engineer

    • Optimized OMS/MMS product list queries with Elasticsearch.
    • Used MQ + Redis + optimistic locks to streamline product review flows.
    • Rate-limited merchant APIs with Redis.
    • Improved product table indexing; sped up SQL.
    • Built product middle-platform; split large tables and big fields.

  • 2018.05 – 2019.05 · DaDa English (Shanghai Zhuozan Edu) — PHP Engineer

    • Optimized teacher CMS stats APIs to <500 ms with Elasticsearch.
    • Built and iterated the ticketing system; maintained CMS features.

  • 2018.03 – 2018.05 · Boqi (Shanghai) Info Tech — Junior PHP Engineer

    • Continued backend feature development and maintenance.

  • 2016.07 – 2018.03 · Guangcheng (Shanghai) Info Tech — Junior PHP Engineer

    • Used Redis to cut product-detail latency to ~50 ms and sustain >500 QPS on Double 11 pages.
    • Added simple rate limiting and improved search quality (first ES exposure).
    • Maintained B2C/B2B commerce interfaces and legacy pages.