1) engineers are actually a general term. People who develop iOS can be called iOS development engineers, and Android development engineers can be called Android development engineers. 2) In fact, what does someone do, that is, an Internet of Things development engineer, that is, doing Internet of Things development. 3) The development of the Internet of Things, we take smart home as an example, that is, your TV, refrigerator, washing machine, air conditioner, microwave oven, etc. They are all networked like mobile phones, and engineers provide technical support for this. 4) The "Internet of Things Development" of Wheat College is to teach you to be an Internet of Things terminal engineer (yes, it has nothing to do with development). 5) Of course, an engineer may also be a kind of honorific title, when someone is really awesome.