Pedro Castillo is a rare breed of repeat founder. As the creator, CEO, and CTO of Devo, the cloud analytics and security platform valued at over $2 billion, he had spent years on the receiving end of the enterprise data deluge. He saw first-hand how his customers struggled to understand what data was where, what value it had, and where it went. He searched for a solution and found nothing that cut through. So he decided to build one himself.

Pedro and his co-founders, Lucas Varela and Pedro Tortosa, launched Onum in Madrid in late 2023. Their observability pipeline platform allows companies to tune out the noise in their data, isolating what is genuinely business-critical from the rest. Cstomers saw data management costs fall by up to 80 per cent within days of implementation. We led Onum's $28 million Series A in April 2024. In August 2025, less than two years after launching, Onum was acquired by CrowdStrike, in a standout validation of the product, the team, and the urgency of the problem they solved.