I applied online and got no response. I completed their coding challenge through github and got no response. I emailed someone I know who works there and got no response. There is a well-know saying: "It is the way one treats one's inferiors more than the way one treats one's equals which reveals one’s real character." which applies here. A company that doesn't even respond to candidates they're not interested in is probably not a good company to work for. They may woo the ones they're interested in but if they lack basic respect for people in general you should probably stay away.