In the game industry, there are two main roles in level creation: environment artist and level designer.

An environment artist is a person who builds the assets that go into the environment. They use tools such as 3ds Max or Maya to create the 3D model and then use other tools such as Photoshop or Gimp to create textures, including diffuse and normal maps.

A level designer is responsible for taking the assets that an environment artist creates and assembling them in an environment for players to enjoy. He/she designs the gameplay elements, creates the scripted events, and tests the gameplay. Typically, a level designer creates environments through a combination of scripting techniques and uses some tools that may still be in development. In our case, that tool is Unreal Engine 4.