Interview questions
Airbnb AI engineer interview questions (2026)
4 real interview questions reported by engineers who interviewed at Airbnb, spanning Data Engineering. Every question is scored against a golden answer on the things Airbnb actually grades, architecture, token efficiency, security and correctness, not just whether your code runs.
Airbnb Data Engineering questions
- Airflow — Design an Idempotent Backfill DAG with Late-Arriving Data
You own a daily Airflow DAG that loads yesterday's orders from Postgres into Snowflake at 7am. Two problems keep happening: (1) an upstream third-party S3 file arrives late, anywhe
- Airflow — Cross-DAG Dependencies and Dynamic Fan-Out
An ingestion DAG lands 200 per-tenant files. A downstream transform must run once per tenant, only after that tenant's file lands. Design coordination across the two DAGs: dynamic
- Airflow — Executor Choice and Correct Retry Semantics
An Airflow deployment on the default executor keeps serializing tasks and missing SLAs, and a flaky API task causes duplicate side effects on retry. Compare LocalExecutor, CeleryEx
- Users with session count growth for three consecutive months
Given a sessions table, write a single SQL query that returns the users whose monthly session count increased month over month for at least 3 consecutive months. ## Input - `sess
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