I need a Social Media, SEO specialist

We need a person to maintain and post on our Social Media accounts (FaceBook, Tweeter and Pinterest). We would need for him/her to post:
1) At least 2 posts per week on Facebook
2) Manage FaceBook retargeting and FB ads
3) Post at least twice a week on Twitter
4) Post at least 5 Pins every day on Pinterest
5) Search and join related forums and sites and promote our web store.
6) Provide weekly progress and results reports.