Kevin Chen
Theme

Live demos

Each demo runs in your browser on a fictional courier company with invented data. The real .NET services, tests and measured results are in the linked repos.

  • Courier operations dashboard

    React and ASP.NET Core dashboard for jobs, drivers and late deliveries, with live-updating figures.

  • AI document extraction

    Delivery dockets, invoices and booking emails turned into data, with a human review queue for doubtful documents.

  • "Where is my parcel" support agent

    A support agent with tool calling, guardrails and an evaluation suite.

  • Webhook automation service

    Idempotent webhook intake, retries and a dead-letter queue, load tested with duplicate and concurrent deliveries.

  • SQL Server performance case study

    Five common production problems reproduced, fixed and measured on 600,000 jobs and 2.19M job events.

  • WCF to modern .NET migration

    A .NET Framework 4.8 WCF service moved to ASP.NET Core with CoreWCF without breaking the existing client.