Need a content writer with SEO experience for websites on different niche topics

We are looking for a talented copywriter with exceptional critical thinking and analysis skills to create non-commercial content that educates and informs. Contents will include Web Content, Blogs, Sales Copies, Social Media Posts, We are a web and content writing company and currently need a content writer for websites on niche topics. The work includes both research for topics and writing the content.

Requirements:
-Excellent writing skills
-SEO knowledge
-Good Communication Skills
-Ability to work independently while managing multiple projects

Please answer the following questions in order to be considereed. Any application without answering the following will not be considered:
1. How long is your experience content writing for websites?
2. What niches have you written content on?
3. How long does it take, on average, to write a 1000 words article/blog/web page?
4. How long is your experience with SEO?
5. Show examples of content you have written (preferably web content)
6. What's your experience in e-books writing?

Even though the above questions ask for experience but we are equally open for ones who do not have that much experience but are willing to learn and put in an extra effort.