Nakul Sibiraj

Nakul Sibiraj is the Co-Founder and CTO of Needletail AI, where he leads the engineering team building the multi-agent AI architecture that automates dental insurance eligibility verification. His engineering philosophy guides Needletail's product direction. As Nakul puts it: "We don't believe in 'AI for the sake of AI.' We build intelligent agents that do real work, navigating portals, making calls, and solving problems. So your team doesn't have to."

Before Needletail, Nakul was a Co-founder at Inflection.io, a Seattle-based B2B marketing automation platform, where he led engineering. Prior to Inflection, he was Principal Architect and Head of Engineering at FullContact, where he built identity and data infrastructure at scale. Across his career, his work has consistently centered on messy real-world integrations and data-intensive systems, the same kinds of problems dental revenue cycle automation demands.

Education and Background

Nakul is based in Kochi, India. He holds a Post Graduate Diploma in Machine Learning and AI from the International Institute of Information Technology Bangalore (IIIT Bangalore), and an earlier undergraduate degree in computer science.

Recent Writing

Nakul authors Needletail's deeper engineering and AI-architecture pieces. Recent essays include:

Human-in-the-Loop AI: Why Dental RCM Can't Be Fully Automated (Yet), on the practical limits of pure-AI verification and why a human review layer is essential at high-stakes accuracy thresholds.
There Is No API for Dental Insurance Companies. Here's How AI Handles That., on building voice-AI and portal-automation infrastructure when the underlying systems offer no API surface.
How AI Agents Handle Dental Insurance Calls, on multi-channel verification combining payer portals, voice agents, and EDI 270/271 transactions.
Automating Patient Eligibility Verification, an overview of the technical workflow Needletail runs at scale.

You can reach Nakul on LinkedIn.