Short answers here; click thru for more depth.
- Will you take our test?
Absolutely not. Thought June 2012 I'd had the definitive and final experience with this, I can tell you now unless your overall decision/vetting process can be done with a few minutes of my time before you engage my labor, please just go away.   From this point, if you've read this and are presenting me with a request to take a test, challenge, etc., or perform other unpaid work as a challenge to my competence, I'll assume that you are trolling.
- How many years experience do you have with platform/language/package X?
~40 overall as a professional IT worker in 2021. As of mid 2018, 30+ C and its dialects, 30 relational database, 25 Linux, ~20 web apps, 18 Java, 10 mobile, etc. Started in IT @ 19, had pre-professional phase.
- How about references?
Click thru or otherwise DIY. I'm a service worker but not a servant, interested in work experiences not demeaning games.
- How many interests/parties you can work with in paid work?
3. Me, the set of co-workers I'm joining in production, represented by a single interest, and the often implicit end consumer (market/ society / clients / customers) as third.
- On-Site Rate?
- Will you work without an advance?
Unless the job's smaller than my min piece, possibly. I take it as a distinction between aspirational and real capital that money can freely change hands to engage my labor, and it's standard practice that it be half in a fixed cost job/deal, but I don't generally require that. Generally an advance is normal but I judge each case as presented. Ofc I'm willing to share/co-work with peers, have some notions on how to do that.
- By further experience did finally reach apodictic certainty, that no matter how tempting the work you have might be for whatever reason, there's no getting around how this casts you and/or your organization as negative and incapable of making basic judgments in IT and in human relations (using just innate understanding). I'd rather not work with that kind of thing, work I do is too hard and too poorly compensated to put up with such stuff. Also check out what Noam Chomsky says about testing about mark 16:00, Bill Gates recent (2013-04) editorial in the NYT on testing, etc.
- Or the kind of person I want to be. I only had the latter day experience by being willing to join what I characterize as negative above.
- There was an appearance rate in the Rate Chart, it's pushed down now. Can probably discount/bundle but obviously on-site rate higher than current real remote rate..