First of all, I can code anything that you can think of, I only need your imagination. I will create an attractive and interactive platform where registered users will be able to share articles as per categorues and will also integrate the social network sharing modules as for facebook, twitter and other, it will be fully mobile responsive as well. Also will code an admin panel from where you will be able to manage users, catergories, sub categories, articles and comments and you will have all informatin at your disposal in admin panel.
And I am expert in back end with having good sense of front end designs. Basically, I am a Full Stack developer. I will meet all of your requirements. Website will be highly secure most importantly. Amount can seem to you little high but in comparison of the work quality that I will provide you it will be worth it. Waiting to hear from you to discuss details.