Now Hiring: Siemens Needs 400

Siemens USA is looking to fill more than 400 positions -- and most of them involve green technology. The jobs, in the corporation's Building Technologies division, were created to help cities reduce energy costs, lower CO2 emissions and save money.

Siemens developed these positions because 82 percent of Americans now live in cities, rather than out in the country. And as budgets tighten and that number grows, the need for cost-effective energy solutions is becoming increasingly important.