German Writer for Online Casinos portal

We are looking for a German mother tongue
writer with previous experience in the online
gaming field. The writer will be required to
write at least a news and a review per week
for a total of around 1200 words/week (or
more).
At times, we might need the candidate to
make some research within the local online
casinos provider and write news items about
their promos/events.
She/He might also be asked to perform some
SEO adjustment to existing content (such as
fix keywords density, check existing p etc.).
Experience in the online gaming industry a
must. SO experience preferable.