Principal Applied AI Lead
Elena Kowalczyk
Elena builds Northwind’s agent and retrieval systems, with a particular focus on evaluation: she designs the gold-standard question sets and confidence thresholds that decide whether a system is ready for production traffic.
Focus areas
RAG systems
agent evaluation
retrieval architecture
02 · On the work
Elena Kowalczyk
In their own words
An evaluation set written by the people who do the work beats one written for the test, every single time.
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