Practice! Books like Programming Pearls and Cracking the Coding Interview will be useful for you. Meet with friends and do mock interviews. Developer interview

Practice! Books like Programming Pearls and Cracking the Coding Interview will be useful for you. Meet with friends and do mock interviews. Developer interviews are similar to the SATs/GREs/any other standardized test. It's not a test of your general ability so much as it is a test of your ability to do well on a standardized testing format. And in general, the best way to ace those is to practice interview problems a lot.