I actually have a theory, that Russell never actually lost his job back in February / March working in this building...
The One Utah Center...
and he simply invented the new jobs at Costco and Geico to try to throw the trolls off his trails.
SlurpDisRusshole could confirm this for us, however if he/she doesn't feel comfortable with that, we already know that Russell gets changed at work and walks to the gym, a Planet Fitness, before going home.
The location of the nearest Planet Fitness is marked with a gold star in the above map and is only two blocks away from this place of work. So easy walking distance.

His old chum Greg Skordas' office is also only a couple of blocks away from the gym...
And in this map we can see the proximity of his old address to the gym, which is also just around the corner from the Costco he was claiming he worked at...
And just a block away from the Mexican Consulate where I'm sure Russ used to love to go to oogle the Hispanic women / throw apples at the dirty Mexican immigrant children...
Just a theory which may or may not prove to be true. Sucks to be stalked though doesn't it Russell!
Eta - We also know from SlurpDisRusshole that on the day of the Ariana Grande court hearing, Russell called into work to pick up his photo of himself with Ariana (the smoking gun evidence) at approx 1.15pm (I think I have that right). He then arrived at the court at approx 1.45pm, 15 minutes. Again however he would have had to get there on foot in under half an hour.
The map below shows the proximity of the small claims court to this possible place of work, again doable on foot in 20-30 minutes, even with his little knock kneed legs;
