Not a grammarian, in the following paragraphs, I use the terms "active vs passive" voices to refer to an "executor" or a "recipient" of a verb.
I do not know if a demanded job makes any sense in English, but a demanding job means to me that it is a job that demands a lot of attention (demand is used in an active voice).
A service that satisfies a customer's need is called a satisfying service (satisfy is used in an active voice), whereas a customer who is or was satisfied by a service is called a satisfied customer (satisfy is used in a passive voice, not an issue of the "time tense").
An information has to be requested first before it becomes the "requested information". While this term "requested information" appears to sound stilted to many native English speakers, the term seems fairly commonly used in books (not sure if all were used by native English speakers). A google books search can confirm it.
Here, the temporal order is interesting to me in that, a piece of information ONLY becomes "the requested information" AFTER a request is placed. Thus, I do not know if the requested information is more an issue of the "time tense" or an issue of the "passive voice". To me, information can ONLY be requested (request used in a passive voice) and cannot request (in an active voice), thus I took the position of "requested information" being a result of "passive voice".
For the examples of failing experiments and failed experiments, they seem very different (in my eye) from all the aforementioned examples. In BOTH cases, the verb "to fail" is used in an active voice, i.e., whether an experiment is failing or an experiment failed, it is the experiment that "fails" (an active voice, although "an experiment-performer" can also fail an experiment). As the verb "to fail" seems to be commonly used in an active voice, but the terms "a failing experiment" and "a failed experiment" have different connotations, I wonder if there are other examples, similar to this modifier ("failed"), in that a verb-ed modifier is derived from an "active-voice" use of the verb