NOV 4, 2026

Flexible Authentication: Reimagining authentication for millions of users at Airbnb

Rebuilding login and signup surfaced product insights, not just technical challenges. Here’s how we designed Flexible Authentication at the intersection of...

Security PostgreSQL API Design Authentication Observability

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CASTLE: training natural language search before the first real query

How we addressed the cold-start problem for Airbnb’s natural language search by jointly generating synthetic training data — queries and relevance labels —...

FrontendData Science

7 min

Airbnb28d ago

Beyond synthetic testing: Capturing and replaying real database workloads at Airbnb

How we capture real production database traffic at Airbnb and replay it offline to load-test, plan capacity, and de-risk upgrades.By: Zuofei Wang, Erluo...

FrontendData Science

11 min

Weekly Brief

Top 10 engineering articles delivered every Monday.

AirbnbSep 29, 2026

Personalization without user identity

How Airbnb uses proximity signals to personalize without relying on individual user history.By: Wei Jiang, Bin Xu, Bharathi Thangamani, Weiwei Guo, Sundar...

FrontendData Science

8 min