Currently I’m a GTPM at Meta and this is the expectation we have for onboarding to a new team unless you’re early in career. I’ve seen this be the case for SWE and other roles in the technical domain. Typically you have an expertise area and at least on my team a starter project or 2 with a tangible deliverable to get you going on something while you ramp and meet others and figure things out. Meta is a big place though so could be other expectations in other organizations.