Expert English to Spanish Translator from Latin America

Description:
Looking for an expert English to Spanish translator with excellent grammar and writing skills from Latin America. I'm planning on working together over the next months so that I can release some short e-books in Spanish.

Must have experience working on interesting translation projects.

Main skills are English to Spanish translation, great grammar, and proofreading.

The rate is fixed per project. $27 usd for 13,000 words or $55 for 26,000 words.

Requirements:

-Must be a native Spanish speaker.
-Background as a translator/interpreter.
-Do not use Google Translate.

-The translations must be manual and make a lot of sense to the reader.
-Must be able to proofread work for grammar/syntax/other errors before delivering work.
-Must be professional and able to deliver on time with a quick turnaround.

-Work samples.

Kindly include this paragraph translated to Spanish (this is a requirement):

You’ll often hear the word assertiveness a lot in social and communication skills training. An assertive person is capable of standing up for his rights in a relaxed and positive manner, without resorting to aggressive behaviors or passively accepting what they dislike or what’s wrong. Assertive people can often get their points across without upsetting or offending others, and as a result, they avoid getting upset themselves.

Those that act in an assertive manner tend to value the ideas, emotions and beliefs of others as their own. Being able to express your wishes, wants, ideas and desires without undermining others’ rights is an extremely desirable and valuable social skill.