I build LLM systems in Python and I measure whether they work.
Chatbots that answer from your own documents: parsing, chunking, embeddings, Qdrant, and an answer that cites the page it came from. Multi-agent pipelines on LangGraph with tool calling and structured output. Scrapers on Playwright that survive Cloudflare.
I also build automation that runs with nobody watching it. One of mine works nine platforms at once: it finds target communities, verifies them, posts on a quota it measured itself, reads every reply, answers the first message and files people into a database — 9 194 communities screened down to 2 822 live targets, and a report twice a day instead of an operator.
My own system runs in production at ortant.net with open code on GitHub. Its quality is a number, not an adjective: a 379-example gold set, macro-F1 0.81, a gate that stopped 7 runs out of 31, median run cost $0.13.
Price and deadline up front. They do not grow later.