I applied for the job online, then was sent a request to take a HackerRank challenge before anyone even spoke with me. I was foolish enough to take this as a positive sign that they were interested and wanted me to prove myself. After spending 2 hours on the challenge, passing every test, and feeling confident, I waited patiently for the results. I received an email a few days later, telling me that I was not accepted. In the end, it seems like they couldn't be bothered to "waste their time" calling me, but were perfectly content with eating 2 hours of mine just to dismiss me. This just shows me that the company has no respect for the people they're interviewing, and they issue these challenges to do the heavy HR lifting for them. It's an unethical attempt to "weed out" candidates who don't have the skills, then only review the resumes of people who DO pass it (but still probably won't talk to them even after they've proven themselves). If you're going to issue a time-consuming challenge, it should be done AFTER you talk to the candidate, rather than wasting their time if you never planned to speak with them in the first place. Or at least be bothered to talk to candidates who able to complete the challenge with 100% passing tests. If you didn't want to talk to me in the first place, then don't send me a challenge. This whole experience speaks volumes about a the company's ethics and culture.