[I'm assuming no, but don't think I've seen it explicitly addressed, in which case this can become documentation.]
New user @yasyf is repeatedly posting links to a certain payment provider. (6 so far.) I've already inquired re: disclosure, but the posts also include a discount code. While the links to the site are non-affiliate, there's no real way to verify that the discount code doesn't have the same ultimate effect, and they probably don't belong here regardless.
I think the difference between disclosure such as "I work for this company, but we do provide a product which meets the needs you list in your question" and "use this link/code, I get money out of it" is that in the latter case the answerers credibility goes way down, even with disclosure.
That's assuming they do disclose, which they may not.
So I'd say no.
The FAQ is pretty clear on this point:
Post good, relevant answers, and if some (but not all) happen to be about your product or website, so be it.
...
If a huge percentage of your posts include a mention of your product or website, you're probably here for the wrong reasons.
Limited-time promotional codes may answer shopping questions, but shopping questions don't really belong here.
