Company logo and letter head

I'm looking for an experienced designer to create a logo and letterhead for my professional services company. I have specific colors and design elements in mind, so the designer should have an eye for how to integrate these into the logo and letterhead. The logo will need to reflect my brand, so any existing branding, color schemes, and design aesthetics should be incorporated into the logo and letterhead. I am looking for an experienced designer who can take these aspects and create an attractive and functional logo and letterhead that will help establish a strong presence for my business.