Masters in Computer Science / Math --> Quant as a former banker?

Hey guys,

I'm a 1st year analyst at a tech group in a BB, but recently have been thinking about a career change. I got a double degree in business and math/stat, but was mainly a business student. I've recently been attracted to Quant firms lately, but realized that my background in banking isn't exactly the most typical background. I'm thinking maybe I'll get masters in math or computer science to compensate for this.

I was wondering if you've seen / heard of people around you who had banking backgrounds but ultimately ended up at a quant firm. Any inputs are appreciated. Thanks.