When you go on interviews you should be interviewing them as well. So for every question they ask you should ask them one as well. If they ask you to code up so

When you go on interviews you should be interviewing them as well. So for every question they ask you should ask them one as well. If they ask you to code up something them you should ask them to code up something to see if they qualify as a group of people you would like to work for. This might not go well at some companies which should be sign that you don't want to work for them.