Hello,
I am an advanced Ph.D. student at a leading U.S. university, based in New York City. I'm a native English speaker with excellent Spanish language skills: I speak Spanish fluently and have since childhood, and my graduate research is focused on Spanish history, so I have extensive experience reading and translating from Spanish to English.
I'm not a native Spanish speaker, as you request, but I am confident that I can do an excellent job at this transcription-translation job, based on my recent experience doing a very similar job for the Wikimedia Foundation. You can see a sample from this transcription in my profile portfolio.
Thanks for your consideration.
I am submitting a private message to which my English writing sample is attached for your review.
Best,
Matthew J.