Writing on AI/ML engineering, LLM fine-tuning, RAG systems, and production machine learning.https://himanshup.dev/https://himanshup.dev/blog/telecomops-rag-local-llm/https://himanshup.dev/blog/telecomops-rag-local-llm/A full technical deep-dive into building TelecomOps RAG: two-machine LAN setup, 31K semantic chunks, Mistral 7B on an RTX 3050, and the real production gotchas nobody writes about.Sun, 31 May 2026 00:00:00 GMThttps://himanshup.dev/blog/rag-for-telecom-noc/https://himanshup.dev/blog/rag-for-telecom-noc/How we built TelecomOps RAG — a retrieval-augmented generation system for telecom network operations centers using Mistral 7B, ChromaDB, and FastAPI. Lessons from 31K chunks in production.Sat, 15 Nov 2025 00:00:00 GMThttps://himanshup.dev/blog/qlora-finetuning-guide/https://himanshup.dev/blog/qlora-finetuning-guide/A complete walkthrough of QLoRA fine-tuning — from dataset preparation to production inference. What the papers don't tell you, and what actually breaks in practice.Wed, 22 Oct 2025 00:00:00 GMThttps://himanshup.dev/blog/agentic-ai-production-patterns/https://himanshup.dev/blog/agentic-ai-production-patterns/Most agentic AI demos are impressive. Most agentic AI production systems are fragile. Here are the patterns that survive contact with real users, real APIs, and real failure modes.Wed, 10 Sep 2025 00:00:00 GMT