English-Spanish Translation, Copyediting and Proofreading

  • Scientific articles
  • Academic content
  • Technical documents
  • Financial and legal documents
  • Web copy and marketing materials, and more
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Sofía Pereson

Want your products to appeal to the customers abroad? Looking to impress international audience with your research paper? Or maybe you need an official document translated for a local office?

I'd be happy to help.

I'm Sofía Pereson, a certified English-Spanish translator, copyeditor and proofreader with over 13 years of experience, based in Philadelphia, Pennsylvania. I work with academic, scientific, technical, legal and financial documents, as well as website copy and marketing materials.

Unlike the big translation companies where the projects are randomly assigned and a translator who's working on your document has never met you, I care about your project as much as you do. Your project has my undivided attention and I'm always there to answer your questions.

My Services


Need to translate a large scientific manuscript, a technical user manual or a whole website? Or maybe you just need a translation of a one-page certificate?

No project is too large or too small for me. And unlike the big translation companies, your project will have my undivided attention.



Want your website visitors to stay longer on your website and buy more of your products? Need to submit an article to a journal and want the editors to focus on your research and not your grammar?

I help you improve your text so that your audience finds it valuable, engaging and easy to understand.



Imagine the embarrassment if your international customers discover typos in your marketing materials. Or if the manuscript you submit to that journal has messed-up table numbers and gross syntax errors.

Let me proofread your text to make your document look professional and protect your reputation.

My Happy Clients

“Reliable translation of technical and marketing materials”

We've been using Sofía's translation services for more than a year, since we always receive a quick answer and the agreed guidelines are met. Sofía doesn't just do the job requested professionally but suggests improvements on the original texts whenever possible. Today, we don't hesitate to assign her all the technical and marketing materials we need to send to our customers abroad, as we know we'll get a reliable translation at the time we need it.

Verónica Oblan
Business Manager at Trini S.A.

“Quality copyediting and translation of scientific manuscripts”

I hired Sofía to copyedit and translate several scientific manuscripts. These were submitted to international journals that publish research articles on microbiology, and they were shortly accepted for publication. The communication throughout the projects was very good, her answers were quick, and she met the deadlines established. I am very happy with her services and I recommend her to anyone looking for a responsible professional and quality work.

Sonia Fosch
MD, Biochemist, Specialist in Clinical Bacteriology
Get a Free Quote

Want to work together? Fill out this form describing your project to send me a nonbinding inquiry. Or send me an email at info@sofiapereson.com with your documents attached, and I will provide you with a free quote. I usually respond within one business day.

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Sofía Pereson


I’m a certified English-Spanish translator, copyeditor and proofreader with over 13 years of experience. I work with academic, scientific, technical, legal and financial documents, as well as marketing materials and website copy. Unlike the big translation companies where you don’t know who’s working on your document and how many projects they are juggling at once, I make your project my priority and I’m always there to answer your questions. Learn more