I build the knowledge layer behind useful AI.

I work where search, data, and agents meet—building systems that make knowledge more trustworthy, and making the hard parts clear enough for people to ship.

Making knowledge usable.

All work

Ideas get sharper out loud.

All speaking
Latest conversation · Breaktime Tech Talks

Reducing Agent Token Costs + RAG Beyond Semantic Search

Why agentic systems burn tokens, what retrieval misses, and how structured knowledge changes the runtime economics.

Frameworks for the hard parts.

All writing
ArticleApr 2026

Pinecone Assistant: A Managed Knowledge Layer

The gap between getting a model to answer and getting an application to answer consistently, accurately, and at scale.

By Roie Schwaber-Cohen.

  • Assistant
  • Managed knowledge
  • Production
SeriesMar 2026

Beyond Retrieval

A framework for making applicability constraints explicit before a system retrieves and generates an answer.

By Roie Schwaber-Cohen.

  • Applicability
  • RAG
  • Knowledge architecture

Seattle, Washington

I’ve spent nearly twenty years building software—and just as long trying to find the cleanest way to explain what the software is actually doing.

Today that means working at Pinecone on the systems and ideas that connect AI to trusted, useful knowledge.

Away from the whiteboard, I’m in Seattle making music, building small tools, and following the same instinct: understand the structure, then make it feel natural.

Find me on GitHub