A: I recommend having a bilingual company recruiter interview the person in both languages; in your case, Spanish and in English. One of the questions for the job applicant should be about their level of proficiency in each language.  Then, the question should be followed by a conversational test as well as a written exercise.  This is the only way to make 100% certain that the job candidate is fully bilingual.  Buena suerte.

A: The length of time for finding the right job varies depending on your specific field, job market, salary range, knowledge, experience and other factors.  Your main task is to present yourself to the best of your abilities to the hiring companies, and hope that they like what they see in you.  If after looking for a job for three months, you have not found the right company or position yet, take another look at your resume and at your cover letter.  How are you presenting yourself to companies? How are you introducing yourself? Are you presenting the benefit that you’re bilingual?  Have you pointed out the successes you’ve had in your last positions?  If I were you, I would consider adjusting my approach and my overall presentation to companies.  Read your resume as if you were a recruiter and see if you like it, and if it appeals to you.  Another idea would be to have a friend check it out and see how they like your resume and cover letter.  See if they have a different approach than your original presentation.  You can also read a few blogs I wrote about resumes and cover letters. Good luck.