Good design means solving problems that make the product work for the user and look amazing at the same time. It's so important that a companies audience be impressed with the feel of an app. Whether it be a video that compliments the content, an interface that works intuitively, or menu items being exactly where they should be.
Clean code is a must. I constantly work toward making clear concise front-end code.
I have helped small businesses optimize their search results quite a bit. Learning more about search engines is just facinating to me. Sometimes clients want to double their web traffic by targeting specific key words. Other times it's just a need to organize the site in a way that works for the user.