Most dispensaries only hire the friends/family they can trust, for obvious reasons. Its incredibly difficult to get a job in the industry right now. I kinda quit trying and instead have focused on how to be as knowledgeable about MMJ/growing as possible for when marijuana is legal and the industry booms.

However, I do post non-physician jobs off Craiglist onto my blog when I come across them. Check em out here:
The Denver Chronicle: Jobs

Good luck!