OK Clinker

OK Clinker is a Spanish construction-tech startup that runs a B2B digital marketplace and procurement platform for buying and selling construction materials, auxiliary tools and rental machinery between contractors and suppliers. Its app acts as an on-site procurement copilot with a back office to track purchases and a dashboard for spend insights, with a catalogue of 25,000+ references and early traction of roughly 35 clients (20 construction firms, 15 suppliers). Founded in 2022 in Barcelona by Aina Oto and Lluís Canals, it went through the BCombinator accelerator and closed a small first round of around €200K.

Profile updated 12 Aug 2026