It's someone who designs infrastructure, so roads, buildings, bridges, sewer systems, etc. Basically if you think about anything a construction worker builds, a civil engineer/team of engineers designed it. There are different categories of civil engineers. Structural engineers make sure a building can handle the weight of everything on/in it. Transportation engineers design highways. I'm a geotechnical engineer, so I deal with soils (dirt) and make sure the ground can support whatever is being built.
It's someone who designs infrastructure, so roads, buildings, bridges, sewer systems, etc. Basically if you think about anything a construction worker builds, a civil engineer/team of engineers designed it. There are different categories of civil engineers. Structural engineers make sure a building can handle the weight of everything on/in it. Transportation engineers design highways. I'm a geotechnical engineer, so I deal with soils (dirt) and make sure the ground can support whatever is being built.