Building observability into Notion’s dead-letter queue
Learn how we built a self-serve DLQ Explorer that makes failed jobs easy to query, debug, and safely replay—without direct S3 access.
Maya Lekhi
Engineering, Notion
Thoughts on the future of work,
from the people and teams creating it.
from the people and teams creating it.
Tech
— How we’re building Notion, block by block.
Enabling Multi-Region Data Systems at Notion
Learn how we built multi-region data infrastructure—spanning search, analytics, AI, and event logging—to ensure customer data is processed and stored entirely within its home region.
Justin Lee, Adam Hudson
Engineering, Notion
How Notion catches breaking schema changes before they reach production
How we built a CI guardrail to catch breaking schema changes automatically, and some of the design decisions that shaped it.Maya Lekhi
Engineering, Notion
Updating the design of Notion pages
In recent months, we decided to revisit our page designs and apply our design rules to them more consistently.
Paul Velleux
Product Designer, Notion
How we built security into Custom Agents
A look inside the security model behind Custom Agents, and what we learned testing it at scale.Sean Keenan, Jacob Brackett
Two years of vector search at Notion: 10x scale, 1/10th cost
This is the story of how we scaled our vector search infrastructure by 10x while simultaneously reducing costs by 90 percent over the past two years.Preeti Gondi, Mickey Liu, Nathan Louie, Calder Lund, Jacob Sager
Balancing cost and reliability for Spark on Kubernetes
Today, we’re excited to open-source Spot Balancer in collaboration with AWS, a tool that helped us reduce Spark compute costs by up to 90% while maintaining reliability.
Justin Lee
Software Engineer, Notion
Meet Scruff, Security's New AI Teammate
See how Notion’s security team built Scruff, an AI teammate that automates alert triage, speeds investigations, and scales with on-call demand.
Nishil Shah
Software Engineer, Notion
How we made Notion available offline
Offline Mode was Notion's most requested feature for years, but building it meant solving tough technical challenges around our unique block architecture. Here's the architecture and data model that made it possible.
Raymond Xu
Software Engineer, Notion
Notion’s hosted MCP server: an inside look
Earlier this year, we got requests for a Notion MCP server that would let AI agents work directly with Notion workspaces. Here’s how we built it, from our initial open-source experiment to today’s hosted solution with custom tools designed specifically for AI workflows.Kenneth Sinder
Software Engineer, Notion