Tesla is "aggressively" hiring electrical and mechanical engineers, software developers, industrial designers, and other technology professionals from around the world. The California-based start-up maker of electric vehicles currently employs about 500 people. It announced its hiring plans in a Dec. 7 press release while noting that the company had hired senior Google staffing strategist Arnnon Geshuri to lead the automaker’s "rapid recruitment of engineers and other key employees." A "genuine passion for electric vehicles and electric propulsion systems" is required because, according to the company's website, "without passion, you would find what we're trying to do too difficult." More hiring criteria: "We are building real products—not presentations. This must excite you. You must be a builder."