BackendFrontendFull-Stack
Backend for Frontend
Also written as BFF
A small backend service built specifically for one frontend (web app, iOS app), which gathers and shapes data from many internal services into exactly what that screen needs.
Think of it like
A personal shopper who visits all the departments and hands you one bag, instead of you queuing at each counter.
Junior or senior?
Appears at companies with microservices and several client apps.
Senior sounds like
Can say when a BFF helped and when it became one more thing to maintain.
Ask them
“Why did you need a separate backend for that frontend, rather than calling the services directly?”