# sdet.it - AI engineer · architect · tooling builder > AI tooling, RAG deployments, QA training. AI agents for multi-tenant systems and test automation. 18 years shipping software, AGPL distillates included. ## Services - [AI Engineer · agents that audit and build](https://sdet.it/#services): AI tooling for QA, a11y, and AI-native discoverability. Custom agents on demand, flagship audits ready to run. - [Context Engineering · context before LLM](https://sdet.it/#services): Don't blast AI everywhere. Prepare deterministic context first - for agents and teams. - [QA Engineering · workflow + training](https://sdet.it/#services): Your QA team ships AI-augmented tests that survive sprint 1 - with the dispatcher to run them at scale. ## Stats 18+ years IT (since 2008) · 19 specialized AI agents · 23 custom skills · 34K LOC production QA · 9 production systems · 9 packages public AGPL toolkit ## Contact - Calendly: https://cal.com/sdet/intro - Mail: darek@sdet.pl - LinkedIn: https://www.linkedin.com/in/dariusz-kowalski-sdet - Contact page: https://sdet.it/contact ## Ecosystem - portfolio.sdet.it - case studies, articles, From the Field series - cdat.sdet.it - CDAT pattern (MIT) - brain.sdet.it - multi-tenant federated knowledge graph (live) - GitHub: https://github.com/darco81 ## Full content https://sdet.it/llms-full.txt