CTO & Co-Founder - Agentic AI (LegalTech)

Department: Founders

Location: Barcelona Office

Employment Type: FullTime

🌍 About Antai Ventures

Antai Ventures is a leading venture studio headquartered in Barcelona, with a strong presence across Southern Europe and Latin America. We team up with exceptional entrepreneurs to build disruptive, scalable companies from scratch. Since 2012, we've co-founded 30+ ventures, including Glovo, Wallapop, PlatanoMelon, and PiperAI. Collectively, our startups have raised over $1.5B in funding, generated $3B+ in shareholder value, and created 5,000+ jobs.

💡About Juryo

Juryo is building the agentic AI platform for small and mid-sized law firms, starting with high-volume B2C practices (extranjería, LSO, laboral, deudas, civil). Our voice and WhatsApp agents already qualify clients, generate documents, manage cases, and handle billing workflows, delivering over 2× improvement in lead conversion for our customers.

We’ve gone from idea to revenue in months:

• Multiple paying law firms onboarded

• Six-digit ARR

• Daily usage (+200 calls/WhatsApps) by real customers

• Clear PMF in a massive, fragmented €5B+ market (in Spain alone)

As a co‑founder, you’ll be in the driver's seat—shaping the vision, setting the pace, and taking ownership. In return, we’ll back you with capital and provide hands‑on support across Product, Tech, Design, GTM, Legal, Talent, Finance, and Fundraising to accelerate your journey from 0 to 1.

🛠️ What You’ll Do

• Co‑craft the technical North Star with the founding team and convert vision into an aggressive, value‑obsessed roadmap.

• Build hands‑on and ship code daily, leveraging the latest AI orchestration techniques (multi‑agent workflows, toolformer, dynamic RAG pipelines) and rock‑solid engineering practices (DDD, SOLID, ruthless automation) to deliver customer value at record speed.

• Recruit, coach, and scale a top‑1 % engineering guild spanning backend, frontend, data, and DevOps—shipping product that customers actually use every single week.

• Design high‑throughput data pipelines to improve our agents while guaranteeing security and compliance.

• Drive a culture of excellence through continuous delivery, rapid experimentation, and metrics‑driven improvement.

• Move fast, obsess over customer impact, and work tirelessly to turn an ambitious vision in reality.

🔍 What We’re Looking For

• 5+ years of experience as a Software Engineer

• Hands‑on builder. You prototype quickly and turn ideas into working features in days.

• Practical AI experience. You’ve built with modern LLM tools—agent orchestration, RAG, embeddings—and know what works in production.

• Curious and smart. You track new research and apply what’s useful.

• User‑value focus. You measure success by customer impact and time saved, not vanity metrics.

• Ownership mindset. You take responsibility for outcomes and think long‑term about product and company value.

• Bias for shipping. You pick simple solutions, automate routine tasks, and release early and often.

• Team builder. You attract and develop strong engineers and foster a supportive, high‑standards culture.

• Clear communicator. You explain technical trade‑offs to both engineers and non‑technical stakeholders.

🤝 What We Offer

• Day‑1 founding seat. Jump into an ambitious startup from the ground up, with a validated concept and live pilots.

• De‑risked upside. Build as a co‑founder on a path charted by Antai’s successful venture‑studio model—capital, playbooks, and network included.

• Full‑stack operator support. Access Antai’s expert teams in Product, Engineering, Design, GTM, Legal, Talent, and Fundraising whenever you need them.

• Significant equity. Own a sizable stake in this venture and optional carry in other Antai portfolio startups.

• Founder community & investors. Join a tight network of serial entrepreneurs and top‑tier backers who’ve scaled category leaders.

• Workspace flexibility. Work from our hubs in Barcelona, Madrid, or Mexico City—or stay remote and sync on frequent on‑sites.