Not sure what to call the position I'm in on a resume`

[nickzornart]

So I'm working with the indie game company Levels or Lives, but it's all of three of us on the team. I'm about to start looking for a new studio job for when I move to San Francisco in a few months, but I'm not sure what I should call this job on the resume`. Here's the stuff that I'm doing for them:

-Pixel art backgrounds for levels
-setting up spritesheets for characters
-promotional illustrations/box art
-web design
-optimizing sprites (size, colors, etc.)
-Laying out room designs (it's a roguelike game that we're working on so we're setting up hundreds of individual rooms)

Any idea what all this would add up to, title-wise?