A genetic engineer is a scientist who specializes in manipulating the genetic material of living organisms. This involves altering DNA to enhance certain traits, such as disease resistance in plants or improved health in animals. Genetic engineering is widely used in fields like agriculture, medicine, and biotechnology. Through techniques like CRISPR and gene cloning, genetic engineers can introduce, remove, or modify genes to achieve desired outcomes. Their work has led to advancements such as genetically modified organisms (GMOs) and gene therapy, which aims to treat genetic disorders in humans by correcting faulty genes.