A lot of understanding different professions and what they usually do in a nutshell, but when we breakdown the different categories and subtypes of the same profession, it can then get confusing to try to figure out what exactly their job might be. Of course, you can always ask the person about their job directly, but if you want to avoid having to deal with that awkward conversation, you can always look up whatever you need on the internet for a faster answer so basically what you are doing right now.
You may have heard some people toss around the word structural engineers and unless you have an engineering background yourself, you might not know what their job entails. So structural engineering essentially comes under civil engineering and is the process of constructing the framework that supports whatever structure is being built around or on top of it. You will need the assistance of a structural engineer in all kinds of projects be it building a commercial building, a bridge, and so on. Their job is to analyze and create a framework that can support whatever will be built around or on top of it. Your structural engineer is responsible for the skeletal support of whatever will then be put on top of it.
This is a very serious and important job since various mega projects rely on the knowledge of the structural engineer. So, structural engineers usually work alongside civil engineers and help built the framework that supports the civil engineer’s projects. It is safe to say that the two usually work together, but they can work independently of each other as well depending on the project and whatever is being required of them. You now have a basic understanding of what a structural engineer does and will now be able to avoid a tedious conversation if you ever run into one later in the future.