Although getting an interview with an engineering design firm is exciting, especially if you have been looking for a job for a while, you need to concentrate on preparing for the interview. Wearing the right clothing can help you ace the interview and land your dream job. When you interview at an engineering design firm, wear professional attire. A suit is a good choice, and men should consider wearing a tie. Women should look polished and professional, and should not wear too much jewelry or make-up. Even if the office is casual, it is always better to dress up for an interview. Once you get the job you can start dressing more casually if that is how your coworkers usually dress.