Bioshock: Infinite
I worked at Irrational Studios as a Contract Level Builder. For that studio, a level builder is an environment artist with the sole job of creating the levels. Not only do we construct the levels, we also take the liberty of constructing the combat areas.
My job involved blocking out, decorating spaces, building the layout, and lighting the levels using the Unreal 3 engine from the assets that were created. Buildings were created by us using their volumetric building tool to give us level builders as much freedom to design the look of the game.
All my work is in what is considered the first level that has combat.