A research and development engineer is responsible for conducting experiments and analyzing processes to determine better approaches to solving problems or product building. You can have this career in industries such as petroleum, aerospace, and mechanics. Your job duties include analyzing processes to find areas of improvement, conducting experiments to determine better approaches, and documenting findings so they can be shared with others. You may be required to use sophisticated tools such as computer-aided design software to create simulations and advanced microscopes for observing chemical reactions.