Are publications in IEEE and ACM journals and conference proceedings considered decent quality by prospective employers in academia? Both the ACM and IEEE have their name attached to a host of conferences and journals.  Some are known to be better than others, but I feel generally that any conference or journal with the ACM or IEEE brands attached are considered decent quality.  (Questions like this indicate I'm not the only one to think so.)

Question: Are publications in IEEE and ACM journals and conference proceedings automatically considered decent quality by prospective employers in academia?  (When applying for postdocs, assistant professor positions, and so on.)  Or is it more nuanced than that?

Essentially, I'm asking what weight do these brands have.

The ARC ERA2010 rank these journals and conferences from A* (the best possible ranking) to C (the lowest possible ranking).  But it's possible that these rankings are not an accurate gauge of the community's attitude towards a particular journal or conference.
Within many sub-disciplines of Computer Science, conference proceedings, rather than journals, are the main publishing venues for new research. In contrast to journals, which have an impact factor, there is no unified metric to quantify the quality of a conference proceeding. Although there are indeed a number of categorizations, I haven't seen them actively being used to decide which venue to submit to. I found that within these sub-disciplines of Computer Science, academics are very aware of which conferences and journals are competitive and what the impact is of publishing a paper there. These are indeed mostly ACM/IEEE, thus, giving them a certain status by name. Nevertheless, just because the conference is supported by ACM or IEEE, does not imply that it is a high quality conference.

However, when you apply for post-doc or faculty position, there might be people on the hiring committee that are not fully aware of this. To mitigate this issue and emphasize this difference to other fields, I have seen several resumes that explicitly explain how the publishing model in their respective subfield differs from the "classic" journal based system. You can achieve this with a simple note in your resume before listing your publications. An example:


  Note: Within the field of (subdiscipline of computer science), selective peer-reviewed conference proceedings are the main
  dissemination of novel research contributions. Conferences such as
  (conf x) and (conf y) are highly competitive publication venues with 2
  review rounds that include reviews from 3 external reviewers as well
  as at least 2 associate chairs. These conferences have an acceptance rate between 10 and 15 % and papers that are accepted and published are refereed as full length papers.