Graphic Designer/Brand/Logo Designer

I'm looking for a Graphic designer/Logo Designer who can work Part-time with a possibility of being full-time. I have a client who constantly giving me tasks and I can no longer accommodate all the tasks given to me because of being too busy. My plate is already full and I need someone to help me do the tasks my client gives me.

Requirements:

-Expert Graphic Designer
-Has a portfolio to show
-Committed
-Efficient
-Detail Oriented