Artist needed for new Indie 2D Platformer

I'm creating a new 2D platformer game in Unity, and I need to hire someone to create the graphics for the game. I would prefer if the artwork was delivered as sprites that I can simply plug into the assets that I have been creating and designing the layouts of the levels with. I will need a Character sprite with sprites for an Idle, Walk, and Jump animation. I will also need sprites for the platforms, hazards, walls/floors/ceilings, etc.