I applied through a recruiter. The process took 4 weeks. I interviewed at Gotham Digital Science (New York, NY) in Mar 2015
Interview
Telephone screen. Web application challenge and If you clear that, they will call you for any onsite interview.Overall interview process was very much tiring but they even thought you make a great web pen-testing you have to clear the final in person interview. Just don't waste your time with them. As far as I can tell they are into branding themselves.