[vvpan]

Doordash uses Kotlin for backend as well. I suppose they want FE/BE to be in the same language. And when your main product is a native app Kotlin starts to make sense.

[ceras]

Neither the iOS app nor the web app use Kotlin at DoorDash. Kotlin was picked for other reasons (consistency with the Android app wasn't mentioned): https://doordash.engineering/2021/05/04/migrating-from-pytho...