A packaging engineer is an engineer who specializes in developing containers and packages for products that meet the manufacturer’s needs. As a packaging engineer, your responsibilities and duties include working with the product manufacturer to decide what kind of package or container (box, bottle, bag, stretch wrap, molded forms, etc.) is best for the product. You discuss what material (paper, plastic, glass, metal, etc.) is best. You determine the most efficient method to produce the containers and how they will appear. This job often requires travel to meet with clients.