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AI x Backend20 July 2026 · 6 min read

Using an LLM as a Heuristic Dispatcher, Not a Cloud API Wrapper→︎

Mobishare's chatbot picks which technician gets a repair ticket by feeding a local LLM a small JSON summary and asking for a GUID back. It's a legitimate pattern — undone for months by an Italian/English string mismatch.

AI x Backend16 July 2026 · 6 min read

A Local LLM Chatbot with Tool-Calling and RAG (No Vector Database)→︎

How I wired Ollama into a real ASP.NET Core app with native tool-calling and a hand-rolled cosine-similarity RAG — no vector DB, no cloud API — and the concurrency bug that nearly broke it.

AI Engineering10 July 2026 · 8 min read

Building a RAG Pipeline over 17,000 PDFs→︎

A build log for a RAG system over thousands of real drug leaflets — PDF-to-markdown, section-aware chunking, a cross-encoder reranker, and GPU-scaled embeddings. The bugs that nearly sank it, with the numbers.

Local RAG15 June 2026 · 5 min read

Building a Privacy-First Local RAG System (End-to-End)→︎

A practical, end-to-end guide to building a private RAG system that never leaves your machine — local embeddings, vector store, and LLM, with real code.

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