Pre Seed · Productivity & Collaboration · Stockholm, Sweden · Founded 2026 · 1–10 employees
BuilderBase is a Stockholm-based startup building operating infrastructure for the global builder ecosystem, specifically targeting hackathon organizers, participants, and sponsors. Founded and led by Jens Ingelstedt, the platform aims to reduce friction across the entire hackathon lifecycle — from event management to outcomes — for all stakeholders involved. Prior to its public launch, the company reported 25+ prelaunch customers across 5 continents and a pipeline of 100+ hackathons for Q2, with a team distributed across 6 countries. BuilderBase also runs the National Startup Buildathon in Sweden, partnering with top university AI societies including KTH, SSE, Chalmers, UU, and LiU. The company appears to be in its earliest stage, having recently launched publicly and operating on an asset-light, SaaS-style model.
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