CTO & Co-Founder - Proptech

Benefits

Additional Information

🌍 About Antai Ventures Antai Ventures is a Barcelona-based venture studio with presence across Southern Europe and LatAm. We partner-up and invest in the best co-founders to build global companies willing to disrupt multi-billion dollar industries. Since 2012 we have co-founded +30 companies including Glovo, Wallapop, PlatanoMelon, and Piper . Our ventures have raised more than $1.5B in funding, have generated more than $3B in shareholders value and currently employ more than 3000 people. 💡 About the venture We are building an AI-native platform for the real estate sector in Spain - one of the most fragmented, relationship-driven, and underdigitised industries in Southern Europe. We have a validated product thesis, a clear go-to-market, and we're now looking for a co-founder & CTO to build it. 🎯 What you'll do Build, launch and scale a disruptive product from scratch. Own the technical architecture - define the stack, set the engineering standards, and make the hard trade-offs between speed and scalability from day one. Design and implement a multi-agent orchestration layer - persistent state management, agent-to-agent handoffs, tool-calling pipelines, and context windows that don't collapse under real usage. Build and maintain LLM-powered workflows in production. Integrate third-party infrastructure (voice providers, CRMs, payment and signing APIs, document verification) into a coherent, maintainable system. Ship code daily - from prototype to production, you are hands-on throughout. Drive a culture of excellence through continuous delivery, rapid experimentation, and customer-obsessed iteration. 🔍 What We're Looking For Proven track record as a hands-on engineer, tech lead, or CTO in an early-stage environment. Hands-on builder. You prototype fast and turn ideas into working features in days, not weeks. Practical AI experience. You have built production systems with LLMs - agent orchestration, multi-agent workflows, conversational AI - and know what actually works outside a demo. Architectural thinking. You design systems that are simple enough to ship fast today and solid enough to scale tomorrow. Ownership mindset. You take responsibility for outcomes and think long-term about product and company value. Clear communicator. You can explain technical trade-offs to engineers and non-technical co-founders alike. Fluency in Spanish and English. 🤝 What We Offer Day-1 founding seat. Join an ambitious venture from the ground up, with a validated concept and Antai's full backing. Significant equity. Own a meaningful stake in the venture, plus optional carry in other Antai portfolio companies. Full-stack operator support. Access Antai's expert teams in Product, Engineering, Design, GTM, Legal, Talent, and Fundraising whenever you need them. Founder community and investors. Join a tight network of serial entrepreneurs and top-tier backers who have scaled category leaders. Based in Barcelona, hybrid.

Your Match

How well this role fits your profile.

Company Intel

What employees say

Worked at antaiventures? Share your experience