Decatur Engineers 314 Church St At Function Engineering, we enjoy the challenge of solving difficult mechanical problems. Function Engineering is a full service mechanical engineering and design firm specializing in new product development. Since 1987, Function Engineering has been providing engineering services to the consumer, computer, medical, and manufacturing industries involved in both low volume and high volume production. Decatur GA Engineers Function Engineering www.function.com mechanical design mechanical engineering design consulting product design mechanical design mechanical engineering design consulting product design Business Reviews Function Engineering Testimonials