Atlassian Interview (senior backend)

Just interviewed for the first backend technical (simple API/Database system design) and am wondering how long it usually takes to hear back?

Also, does anyone have insight into what the on-site will look like? My understanding is more system design and probably 1 or 2 leetcode rounds, the rest being values. Had a referal if that matters.

Blind tax: 180k TC, 7yoe