My profile: Sr. Developer/Architect with 8+ years experience in Django. I have received (and turned down) offers in São Paulo for R$12.000/month (CLT), to what some people in my network said it would be "good, but not extraordinary". I've heard people saying they were making less, some saying were making more. One of them mentioned he was making R$20k/month CLT, but admittedly he was way out of the curve.
In the end, I moved to Berlin, a city that is less expensive than São Paulo and where you can get a €6000/month salary without much trouble, and freelance contracts in the €75-80/hour range.
But in short, tell me you are actually paying R$18.000/month and I will send you my CV.