Social Media + Content for travel startup

I have just launched my travel startup (SABIAR)  and I'm looking for someone who can help me manage SABIAR's social networks, blog and newsletter.

The website is bilingual - Portuguese and English - so I need someone who can speak both languages.

Job Description:

- 1 post per week, in portuguese and English (same content, only translation). I would need you not only to write the content, but also post it on wordpress (with pictures and following SEO rules).

- Social Media: 2 posts per weekday on facebook, 2 on twitter and 2 on instagram (they could all be in both languages, on same post/tweet)

- Newsletter - once a week - both languages, content + formatting (mailchimp)

I would need some writing samples from applicants.