I built a search engine for 3 million Polish businesses — here's what I learned

Developer launched nipgo.pl, a Polish business search engine that combines fragmented public registries into one place.

The product aggregates data on 3M+ businesses, including KRS, CEIDG, VAT status, tenders, subsidies, and contact details.

It tackles a major pain point in Polish B2B workflows by making company verification faster and more reliable.

The creator also solved major scaling and data-format challenges while building the product with tools like Next.js, Supabase, and Vercel.