I understand you are seeking a writer who can edit and revise already-drafted content for style. In short, it sounds like you need wordy, possibly meandering content to be punchy.
As an attorney, I learned to synthesize complicated legal research into concise, straightforward, understandable legal briefs and articles for the court and clients. Because of stringent court restrictions on word and page counts, I habitually seek to shorten and tighten up language to achieve a punchy, readable style. I am comfortable revising documents drafted by others to improve their style without changing their meaning.
If I understand your needs correctly, you are looking for sharp, yet upbeat, content for your website. The main idea would be to identify the goal of the webpage and remove superfluous words and information that do not aid in achieving that goal. Precise word choice is key: when I tutor high school kids, I tell them, "Never use three words when one will do."
I am interested in learning more about your project. Please contact me so I can get an idea of the type of content you have and what your ideal finished project would achieve. I look forward to hearing from you.