Was contacted by a recruiting agency, took a coding challenge (which was a math problem as opposed to anything practical). Their hiring manager while sounding professional either did not understand or did not know what position they were recruiting for, asking about things such as what is happening when you connect to a web page, or what DOM with almost disregard for the context, just all around odd questions will throw anyone who doesn't know anything about backened. The weirdest part was that is was a mobile developer position and they don't even mention this until the skype interview.