It's too easy to fake "expertise" and "culture fit" over a 2/3/4/5 round interview each lasting an hour or so.
Most companies who deem this mode as not an option, simply aren't looking for great experts or engineers, but rather a cog in the grand system of wheels to keep the show running - or what HRs end up calling - a resource!
Solution: What can engineers do for this problem?
1. Propose this option (1 week PAID work trial) to HRs 2. Keep a backlog of technically engaging, but smaller work-items which could be taken up with least amount of background-knowledge , or something that has an easy-ramp-up-path for a newbie in the realm 3. Iterate and improve
This is just an extremely condensed internship of sorts. And many firms understand the value of intern-to-hire path.