Bartosz Mikulski
AI Consultant
AI Risk Prevention | I help SaaS startups with customer-facing LLMs stop AI hallucinations before they trigger public failures, compliance issues, or customer churn.
Go from AI Janitor to AI Architect
Master the systematic process for Building Production-Grade, Trustworthy AI Systems.
Stop the frustrating, time-wasting guesswork of debugging black-box models.
Learn a repeatable process to diagnose, fix, and prevent AI hallucinations at their source.
Start With These Core Ideas
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A Framework for Measuring and Fixing AI Hallucinations
A complete guide to recognizing the major types of hallucinations and picking the right mitigation strategy.
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The AI Architect's Guide to RAG Debugging
Learn a 3-step diagnostic process that isolates the root cause of hallucinations by focusing on retrieval, not just the LLM.
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How to Measure Information Retrieval Quality in RAG
If you can't measure it, you can't improve it. This guide shows you how to use MRR and NDCG to quantify retrieval performance.
Featured In:
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DataTalks Club by Alexey Grigorev
Episode: Data Intensive AI (February 2025)
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97 Things Every Data Engineer Should Know by Tobias Macey
Chapter: The Six Words That Will Destroy Your Career
What people are saying
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Martyna Urbanek-Trzeciak
(Product Manager - Data Engineering)
I worked with Bartosz while he was a member of Data Engineering team at Fandom. He is very professional and open to share his knowledge with his teammates and beyond. His approach was always very data-driven and he has great knowledge in Data Engineering area what made him very valuable partner in discussions.
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Mariusz Kuriata
(Senior Manager of Engineering - Head of Ops)
It was my pleasure to work with Bartosz. Bartosz is a dedicated and experienced Data Engineer who showed a range of skills and readiness to help. I appreciated that I could count on Bartosz to lead sophisticated technical projects. Highly recommend!
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Workshop participant
I'm extremely impressed with Bartosz's expertise and experience. We covered all assignments, addressing various details, scenarios, and potential errors. Every question we asked was answered thoroughly. The workshop format of the sessions and small group activities were particularly enjoyable. We had opportunities to apply our new knowledge practically. The trainer remained accessible whenever questions arose. If any uncertainties emerged, the facilitator explained everything with patience."