Applied online. Got a response email asking for a writing test, which I completed and sent. They responded to me in a few days saying that they loved my writing test, and asked me for convenient times for a phone interview with them, but before that I needed to answer a few basic questions regarding hours, compensation, visa issues and the like. I responded honestly, which was that I'm okay with the timings and compensation, but am on an international visa after graduating from my Master's this May. I was expecting a response soon, but only got one after 4 days, saying they'd decided to move forward with other candidates. This seemed very odd to me, and the only thing that I can think of that might have hampered my chances is that I told them that I'm on a visa. That's fine, I get that some companies aren't willing to hire international candidates, but why not specify that in the beginning? I wouldn't have wasted my time and effort into the writing test had I known before.