SalesPatriot Challenge: Build the Arsenal

Poland is rearming. Behind every jet, radar and shell is a supply chain of thousands of small suppliers buried in tenders, PDFs and portals. SalesPatriot (YC W25) builds AI for that supply chain. During Poland Tech Week 2026 we’re inviting up to 30 builders to spend one day in Warsaw shipping tools that accelerate defense procurement in Poland and Europe.Apply individually. You'll be matched into a team of 3 engineers on the day. What you get: A day of building on real problems set by our engineers, with a curated public dataset of government solicitationsMentorship from SalesPatriot Co-Founder & COO, Maciej Szymczyk, and SalesPatriot engineers$5,000 prize pool (1st place: $2500, 2nd place: $1500, 3rd place: $1000), and fast-track interviews with SalesPatriotFood and coffee all day Challenges cover bid intelligence, supplier discovery and compliance. Full briefs on the day. Public and synthetic data only. You keep ownership of what you build. We’re hiring in Warsaw and for roles working with our US team.Applications close October 26. Selected participants will be notified by October 27.See the full Poland Tech Week calendar