&gt; Coders seem to have an irrational hatred of suits and ties for some reason. The conservative choice would be to wear a polo shirt and slacks to my interviews.<p>Want to hear a funny thing regarding this? From _The Big Short_ by Michael Lewis:<p>&gt; The guys who ran money dressed as if they were going to a Yankees game. Their financial performance was supposed to be all that mattered about them, and so it caused suspicion if they dressed too well. If you saw a buy-side guy in a suit, it usually meant that he was in trouble, or scheduled to meet someone who had given him money, or both.