Big Sur Ventures

Big Sur Ventures is a Madrid-based early-stage venture capital firm founded in 2012, investing primarily in Spanish and European technology startups. The firm operates across two thematic tracks: Power of Internet (software, SaaS, internet-enabled products and services) and Deep Tech (quantum computing, AI, materials science, photonics, microelectronics, and nanotechnology addressing global challenges in energy, decarbonization, and mobility). It targets companies from Pre-Seed through Series A, with an initial check size of €100K–€1M. Big Sur takes a high-conviction, hands-on approach — leading rounds, providing operational guidance, transactional expertise, and network access — and positions itself as an active partner rather than a passive capital provider. Founders pitch via a structured three-step online form on the firm's website.