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HCMC

Writing / Field notes

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Notes from the build.

Things I learned shipping LLM features, full-stack platforms and the plumbing in between. Mostly practical, occasionally opinionated.

  1. 01
    A candidate taking part in a remote interview with headphones and a laptop
    LLM · n8n · Reliability

    Webhooks time out. LLM workflows don't care.

    Why long-running LLM evaluations broke behind synchronous webhooks, and the async pattern that fixed it.

  2. 02
    An analyst comparing business profiles while two business owners discuss a potential partnership
    RAG · LLM · Product

    A match nobody can explain is a match nobody trusts

    Notes from building an LLM-powered business matching pipeline where traceability mattered as much as accuracy.

  3. 03
    A service advisor, customer and technician working inside a modern automotive garage
    Full-Stack · Architecture · NestJS

    Designing one platform for four kinds of users

    What building a garage booking system for customers, merchants, staff and admins taught me about schema-first product work.