Arthur De Los Santos is Co-Founder and CTO at Rindler (YC S26), a Y Combinator-backed AI infrastructure startup building the bridge between websites and autonomous AI agents.

Arthur graduated from MIT with a degree in Computer Science and AI, bringing hands-on experience as an Advanced Undergraduate Researcher at MIT CSAIL and an Autonomous Robotics Engineering Intern at Telexistence.

Arthur turned down offers from big tech companies to pursue Rindler full-time after identifying a critical gap: AI agents cannot reliably act on the web. His conviction and technical depth earned Rindler a spot in the highly competitive YC S26 batch.

At Rindler, Arthur leads the technical vision to turn any website into a deterministic API, enabling AI agents to search, compare, and complete commerce workflows reliably and at scale.

Rindler is positioned at the frontier of the agentic AI revolution, competing alongside players like LangChain and Relevance AI, and is backed by Y Combinator as part of the Summer 2026 cohort.