A former exec at Google and Facebook doesn't just expect job candidates to negotiate their offer — she hopes they will By Shana Lebowitz

Negotiating a job offer is a notoriously harrowing process, especially if you've never done it before and assume the world will explode if you request a dollar more. 

But there are some good reasons to do it anyway — not least among them that if you don't negotiate your starting salary, you could lose out on $1 million over the course of your lifetime. 

Plus, you might impress your prospective employer with your initiative. 

At least, that's true if you're going to work for Libby Leffler. Leffler is the vice president of membership at personal finance company SoFi; she previously worked at Google and Facebook. Leffler told Business Insider, "I am always expecting people that I hire on my team to negotiate their job offer."…