Need Professional content writer for long time

Num. of articles: 40
Words per article: 300 to 400
Information for the blog/website: News and Techie information Website
Topic: Design , Gadgets , Marketing , Trending , Top 10
Tone: Formal/Professional
Outline & Structure: This is new startup website , I am planning to post engaged and traffic drive contents ,
the content would be seo friendly with long tail keyword filled , topic should be engage the readers
i will provide key word, content should be original not copy and duplicate.
Extensive research needed: yes
Extra notes: Weakly i need 10 Articles ,
but this budget is monthly
If the contents are really good means , i will pay extra
budget is not limit but content is important , sometime need to do proof reading also
please apply only serious writers , please mention this keyword 'Info' while you applying the job