> Markdown version of [/@tomek-porozynski](https://www.wearedevelopers.com/@tomek-porozynski). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Tomek Porożyński Staff ML Engineer at deepsense.ai focused on making generative AI and RAG actually work. ## About Tomek Porożyński builds machine learning systems and cloud infrastructure. Working as a Staff ML Engineer at deepsense.ai and a recognized Google Developer Expert, he focuses on making generative AI reliable in production environments. He cares about fixing the weak points in LLM applications. Instead of relying on off-the-shelf embedding models, he trains systems to understand domain-specific jargon, ensuring Retrieval-Augmented Generation (RAG) actually works on real-world corporate text. Outside of his day-to-day engineering work, Tomek runs a YouTube channel and a technology blog breaking down cloud-native development. ## Past Sessions ### World Congress 2026 Europe · July 8, 2026 Berlin, Germany - [The R in RAG: Why retrieval is often the weakest link (and how to fix it)](https://www.wearedevelopers.com/videos/100005-the-r-in-rag-why-retrieval-is-often-the-weakest-link-and-how-to-fix-it) · 30 min · 🎥 Watch recording ## Videos - [The R in RAG: Why retrieval is often the weakest link (and how to fix it)](https://www.wearedevelopers.com/videos/100005-the-r-in-rag-why-retrieval-is-often-the-weakest-link-and-how-to-fix-it) · Tomek Porożyński ## Links - [LinkedIn](https://www.linkedin.com/in/tomaszporozynski/)