Andrew,
CFI is the most common route of building time; however, not everyone feels that route is for them. There are other routes that you can do to build time such as aerial photography, firefighting, banner towing, etc. CFI is the most common; however, there are obviously other avenues, but this is a short list found under 14 CFR 119.1(e) :
As per finding employment, Google, Facebook, and Climbto350 are just a few ways of coming in contact with recruiters. I would also mentioned networking at your local FBO and making friends, acquiring business cards are also a few ways to meet employers.
Brady