An architectural designer is someone who draws pictures and makes plans to design buildings in a way that makes them look great and work really well. Imagine you are building a sandcastle on the beach. You want it to be big and cool, but you also want it to stay up and not fall down. You need a plan to make sure everything fits together and is strong. That is what an architectural designer does, but with real buildings!
These designers use math and creative thinking to come up with ideas and plans for houses, offices, schools, and even big buildings like skyscrapers. They make sure everything works together like how many rooms a building should have, how tall the ceilings should be, which way the doors should open, and where the windows should go so that the inside can be sunny and bright. They also make sure the building is safe to walk in and that it can stand up against things like wind or earthquakes.
Architectural designers work closely with builders, engineers, and other professionals to make sure the building turns out just the way they planned. They might also use special tools and computer programs to create 3D models or virtual tours of the building so that people can see what it will look like before it's even built. In the end, the architectural designer helps to bring someone's dream of a building to life!