Hello. I am from Argentina, so I'm a native Spanish speaker. I also have worked with web development and online marketing for the last 6 years. I think I can really help you get some great pages, and not just some generic translations.
However, I'm not sure if I correctly understand this project. Is this a one time translation or an ongoing job?
Please, let me know if you have any questions at all.
Best regards,
Sebastian Choren