Observed arrival · 2026-08-27
Džiugas Marčėnas Builds AI Systems That Can Be Measured
A Vilnius-based engineer’s portfolio of RAG systems, personal AI software, web-scraping tools, and automation experiments.
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Field notes
The portfolio organizes its work around named systems rather than generic service categories. Its labour-law project searches 257 articles and reports a Recall@1 change from 0.72 to 0.88, while Joan explores persistent state across assistants and Firecrawl Scraper turns messy web sources into structured material. The page also situates the technical work in Vilnius and points to Tūla, an interactive literary map, as an active side project.
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