You will get the best Spanish proofreading, writing, MTPE or translation from English
Top Rated
Project details
I will do the best quality work for you, satisfaction guaranteed, since I am not only an expert in Spanish. You will have at your disposal a detail-oriented and ethic professional, a native Spanish speaker who knows all the linguistic and cultural variants of the language in the Spanish-speaking world. At a very convenient price, you will have a Spanish content specialist: I am not just another proofreader or a mere translator, I am a language strategist, a Spanish "content curator" whose main occupation is to be a real writer, not a simple secretary. I offer you an awesome professional experience and a top-notch academic background. My skills and experience cover an unusually wide range of domains: from the technological to the humanistic, from the scientific to the commercial fields. Not just any UpWork freelancer can say, as I can, that he has published books, managed publishing projects, been a successful university professor and participated in international literary competitions. It takes a lot to be very good whether it's writing a Facebook ad, proofreading a doctoral thesis or translating a user manual. This versatility is not common and it doesn't come cheap.
Service Type
Proofread & Edit, Critique, FormattingLanguage
English, SpanishWhat's included
| Service Tiers |
Starter
$15
|
Standard
$17
|
Advanced
$20
|
|---|---|---|---|
| Delivery Time | 1 day | 1 day | 2 days |
Number of Revisions | 3 | 3 | 3 |
Number of Words | 1000 | 1000 | 1000 |
Grammar & Syntax Review | |||
Fact-Checking | - | - | |
Content Rewriting | |||
Structural Edit | |||
Print Layout | - | - | - |
Optional add-ons
You can add these on the next page.
Additional 100 Words
+$3
Fact-Checking
+$5
SEO
(+ 1 Day)
+$5
Localization
(+ 1 Day)
+$5
Translation from English to Spanish
(+ 1 Day)
+$5Frequently asked questions
22 reviews
(21)
(1)
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DD
Derek D.
May 13, 2026
Spanish Proofreader for Book
Carlos did an exceptional job proofreading our book in Spanish. He has a keen eye for detail and ensured the text was linguistically accurate while maintaining the intended tone. His communication was clear throughout the process, and he delivered high-quality work on time. I highly recommend his services to any author looking for a professional touch.
GT
Gabriela T.
Apr 8, 2026
Spanish Editor (Copyediting + Light Line Editing) for Instructional Ebook
GT
Gabriela T.
Mar 25, 2026
Spanish Editor (Copyediting + Light Line Editing) for Instructional Ebook
Carlos was very responsive, and he delivered exactly what I needed with copyediting needs. Will continue to work with him.
JK
Jill K.
Mar 20, 2026
Audio Transcription and Review (Data Annotation) T1 - BrPT, ES, FR, DE, PL, TR
Thank you for your time and effort on this assessment. We appreciate your interest and professionalism, and we look forward to the possibility of collaborating with you on future opportunities.
YI
Yukei I.
Feb 18, 2026
Native Spanish Proofreader for Spiritual Book
About Carlos
Spanish translator, proofreader, editor, copywriter, MTPE, LQA, ASR
96%
Job Success
La Esperanza, Guatemala - 9:17 am local time
WHAT I CAN DO FOR YOU WITH EXCELLENCE
Hello! As an experienced and qualified proofreader, translator, copywriter, editor, transcreator, and transcriber, I can refine and improve your Spanish content so that it has a professional finish, reads fluently and naturally, has the right style, is culturally adapted, error-free, and tailored to your specific needs.
My ability to optimize English to Spanish translations and correct texts generated by AI tools (MTPE) is based on a top-notch professional experience and academic background and will make the difference for your project to acquire the quality required to be successful. I also have experience as a prompt engineer and am able to participate in LLM trainings.
I can work very well with technical, industrial, medical and business, as well as literary, commercial, artistic and educational content. My qualifications cover an unusually wide range: from the scientific or academic field to the humanistic and social fields.
I also offer ASR (Automated Speech Reviewing or Audio Speech Recognition) and TTS (Text-to-Speech) / STT (Speech-to-Text) related services: quality assurance, naturalization, improvement and proofreading of automated translations/transcriptions; and also voice-over recording (neutral Spanish) for podcasts, faceless videos, online courses; language learning apps assesment.
Through my extensive experience in the field of education, I have developed excellent skills in E-learning, curricula design, document formatting, research tasks, academic content review, use of educational technology, LMS platforms, and the design or audit of virtual courses and educational projects.
EXPERIENCE AND BACKGROUND TO YOUR SERVICE
I am an industrial and electronic engineer, philosopher and theologian, with a postgraduate degree in higher education and a master's degree in strategic administration of information technologies. I also have specialization courses in various areas offered by renowned universities around the world.
I worked for a long time as a proofreader, pre-press specialist, editor and author for a leading Spaniard publishing corporation in Latin America. I have been an outstanding university professor for 20 years in various careers and universities. I have also successfully served as private consultant in QA, E-learning, Professional Ethics and Ortotypographical Correction.
I know all the linguistic and cultural variants of Latin America, Spain and the hispanic population in the U.S. & Canada, so I am a specialist in working in neutral Spanish and avoiding any kind of regionalisms, if you are looking to reach the maximum possible Spanish-speaking audience. And, conversely, I can do localization and enhance my work with SEO strategies.
MORE GOOD NEWS
- From 2025 I am also available at UpWork. Make no mistake: despite my short time at UpWork, I have more training and experience than most freelancers in my field.
- Here you have more than a mere proofreader or more than just another translator: I am a Spanish "content curator" and analyst with complete mastery of the language.
- You can take a look at my resume: look for it in my profile page!
- See what my clients say about my professional approach and quality service: take a look at my Upwork profile page.
- Detail-oriented / Quality standards / Great work ethics / Responsible and committed to my clients / I always walk the extra mile / Highly organized / Impressive general knowledge
- I currently spend part of my time as a writer on personal projects that encompass fiction, history and poetry: this means I'm a real author and can bring a literary eye to your texts.
- I offer you unlimited revisions of the work, until you are satisfied with the result.
- I assure you a friendly and constant communication during the project and as long as necessary.
- I will give you quick attention to your concerns and fast delivery times.
- Rest assured that if you receive a proposal from me it is because I truly know I can do a great job for you and add value to your project.
Steps for completing your project
After purchasing the project, send requirements so Carlos can start the project.
Delivery time starts when Carlos receives requirements from you.
Carlos works on your project following the steps below.
Revisions may occur after the delivery date.
Exchange of concerns
I discuss with the client the nature and characteristics of his project in a friendly communication within UpWork.