Just anecdotally, I can confirm that this method works great - it screened me out by showing me exactly what day to day work was like at your company, and that I was not nearly nerdy enough about specifically containerization to want to do it all day.

So you saved yourself/the team several possible hours of interviewing, and me quite a few hours - I think it took me about 10 to 15 minutes to see what you wanted in an engineer and that I was not it, and a total of 1 email which felt quite automated (whether it was or not) so there was a very low social cost as well.

You are assuming the assignment is reasonable and the candidate is lacking if they cannot complete in the expected time. And for all I know that’s entirely true for you. What I know is that I’ve seen assignments from others where the assignment scope was unreasonable for the allotted time. And for those teams, the filter becomes not so much “is this person capable” but “is this person willing to put up with our shit”, and the teams likely don’t even realize that’s what they’ve done (because they also “don't ask or check how long candidates take”).

> Again, the underlying smuggled premise here is that candidates have to finish the work sample. No they don't. In fact, that's a strong sign it's not an effective work sample. A test that everybody passes isn't a real test; it's just a hazing ritual.

Now this is an interesting take. Usually when people talk about these take home assignments, they talk about assessing the quality of the work. How good is the design? How is the coding? Is it efficient/elegant/whatever?

Here you take a much different approach, saying that the completion itself is the filter. If one person completes your assignment in the allotted 2 hours and another needs 12 but never tells you that, do you not care about that discrepancy?