Founding CTO

Employment: Full-Time Location: San Francisco, CA (on-site) About the Role We are looking for a Founding CTO, someone who wants to be the company's technical co‑pilot. You will start hands‑on, ship fast, and own the core architecture. As the company scales, you will be in charge of building the engineering team in SF. This is not a VP Engineering role. We do not want someone who manages from a distance. We want someone who codes every day, is obsessed with what is happening on the bleeding edge, and has the potential to coach and grow a team around them. You will own the technical vision, partner directly with the founder on product and company decisions, and build the foundation that scales from 0 to 10M+ users. Our Philosophy Small teams build the most important products. Talent density over team size. Extreme ownership and intensity. Speed over process. Taste matters. Human interaction is one of the most complex systems in the world. AI finally makes it possible to structure and orchestrate it at scale. This is one of the most important problems to solve. Everyone on the team is here because they are obsessed with building. Key Responsibilities Own the technical vision and architecture end‑to‑end Work across the full stack: backend, infra, data, and LLM‑powered systems Ship fast, iterate on feedback, and get product into users' hands quickly Build the technical foundation that can scale from 0 to 10M+ users Recruit, mentor, and eventually lead an exceptional engineering team in SF Partner with the founder on company‑defining product and technical decisions Lead the gradual transition of the engineering center of gravity to SF Qualifications Must‑Have 5+ years of engineering experience with a strong backend and infrastructure background Shipped ambitious products end‑to‑end with real battle scars from scaling Ex‑founder or first engineer at a YC startup or equivalent track record of ownership Experience with AI/LLM systems, search, recommendations, or large‑scale consumer apps Product sense: designs with the user in mind, not just technical correctness Comfortable with ambiguity, speed, and early‑stage chaos Wants to grow into a true CTO role, not just writing code but building the team, culture, and long‑term architecture Based in or willing to relocate to San Francisco, fully in‑person in SoMa Nice‑to‑Have Experience with graph systems, identity resolution, or large‑scale unstructured data Familiarity with real‑time data pipelines or agent coordination systems Prior experience recruiting or mentoring junior engineers Experience building consumer products at scale Summary Requirements Zero‑to‑one product building experience AI and data infrastructure depth Founder mentality and extreme ownership Graph or large‑scale data systems experience Team building potential Benefits & Perks Health insurance Gym stipend Transportation to office In‑person SF team environment Direct access to leading investors as active backers Apply for this position We welcome applications from candidates ready to relocate to San Francisco and committed to a fully in‑person role in SoMa. #J-18808-Ljbffr Job Juncture