https://www.pindrop.com/about-pindrop-security/
https://www.pindrop.com/what-we-do/
We're also hiring: http://grnh.se/iwk5m4
Your description of the startup scene here is literally the startup scene everywhere.
Different teams excel at different challenges.
Personally I'd prefer a market with competitors. That means the market exists.
It's a shame because there is a lot of potential, but the leaders concentrate on the marketing of the community instead of actually developing a better community. Lots of cargo culting with incubators etc., but not a lot of large wins. There are pockets of awesome in the town, but Atlanta is more about who you know and your image, not the substance that has made runaway successful tech startups.
Not trying to nitpick, just pointing out that Whatsapp didn't start in a crowded market. They actually did something unique that made messaging their friends & family way cheaper and easier.
Atlanta Tech Village http://atlantatechvillage.com/ Venture Atlanta (for up and coming startups to get funded) http://ventureatlanta.org/
Nearby there's companies like BitPay https://bitpay.com/ Terminus http://terminus.com/ SalesLoft https://salesloft.com/ YikYak https://www.yikyak.com/home
There's intentionally nothing like Silicon Valley because the Valley has a literal firehose of the most brilliant engineers constantly flowing into it. When Atlanta, or Tampa, ends up with a brilliant engineer with vision and drive, it's mostly out of luck or coincidence.