Was this ever posted before? I can't seem to recall and the search tool was failing me.
I don't know why I didn't post this a year ago when I found it. Maybe because it is pretty pointless and I still don't know the 'why'. Maybe it is like common knowledge and everyone already acknowledged this. Or maybe because I still only have horrible shaky cam phone pics that are impossible to read (where is theater mode?)

One of the pieces of garbage on the ground littered around the game world has part of the Bungie Crest on it. I find it prominent on Mars. It is just enough of the crest and sliding glass doors that it is unmistakable to me. There is also a 'apply now' button on the right side. I seem to recall on the old bungie website, on the careers page, the header for some of the job application pages was the photo of the section of the headquarters front entry way with the Crest painted on the wall and the timeline surrounding it:

I tried to hit the wayback machine and find the exact webpage in question, and maybe a date of around when this listing was up but I wasn't able to come up with anything.
Could that be part of the egg or joke? That this job has been listed for 4 solid years and nobody has applied or taken the job? Or is it a tongue in cheek thing? Did some reviewer once criticize the company for having less than stellar special effects, so they are sticking it to the reviewer by placing their want ad EVERYWHERE in game? Did Activision execs tell them the game needed more Special Effects? Or is it like a desperate Old West wanted poster? Special Effects Artist needed dead or alive.