Lots of different problems that are complex! For example: + Text internationalization system + Payment processing + User auth + User verification + A/B tes

Lots of different problems that are complex! For example: + Text internationalization system + Payment processing + User auth + User verification + A/B testing system + User metrics collection from UI + offline storage of said metrics + data pipelines to process stored offline storage + iOS app + android app + Image storage and caching infra + fraud detection + search ranking and indexing https://medium.com/airbnb-engineering/airbnb-engineering-infrastructure/home https://medium.com/airbnb-engineering/airbnb-engineering-inf...