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Jack Cheng
Title: Software Engineer
Age: 28
Company: Chevron
Fortune 500 rank: 3
Based in: Houston, TX

"I really became a part of Chevron the moment that my supervisor told me I was going to be the lead developer of a project. Of course, I was the only person developing it, so it had to be me! But he really just wanted me to take on a project and see if I could handle it. And that was just two months after I got to the company."

NEXT: Juan Muriel
Last updated April 22 2008: 4:21 PM ET