Working languages:
English to Spanish
Spanish to English

Javier Contreras
Connecting You to the Global Market

Valladolid, Castilla y Leon, Spain
Local time: 04:14 CET (GMT+1)

Native in: Spanish Native in Spanish
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6 positive reviews

0.0 (6 reviews)


Account type Freelance translator and/or interpreter
Data security Created by Evelio Clavel-Rosales This person has a SecurePRO™ card. Because this person is not a ProZ.com Plus subscriber, to view his or her SecurePRO™ card you must be a ProZ.com Business member or Plus subscriber.
Affiliations This person is not affiliated with any business or Blue Board record at ProZ.com.
Services Translation, Editing/proofreading, Software localization, Subtitling, AI + Human review (MT post-editing) , Transcription, Copywriting, Transcreation
Expertise
Specializes in:
ArchitectureIT (Information Technology)
Medical (general)Cinema, Film, TV, Drama
Education / Pedagogy

Rates
General rate: 0.05 EUR per word / 22 EUR per hour

KudoZ activity (PRO) Questions answered: 2
Payment methods accepted PayPal, Wire transfer, Bank transfer | Send a payment via ProZ*Pay
Translation education Other - Universidad Nacional Experimental del Táchira - UNET
Experience Years of experience: 14. Registered at ProZ.com: Sep 2016.
ProZ.com Certified PRO certificate(s) N/A
Credentials English to Spanish (A.C. Colegio Nacional de Licenciados en Traducción e Interpretación)
Spanish to English (A.C. Colegio Nacional de Licenciados en Traducción e Interpretación)
Memberships CONALTI
Software Adobe Acrobat, Adobe Photoshop, Aegisub, Amara, AutoCAD, ChatGPT, Crowdin, DeepL, EZTitles, MateCat, memoQ, MemSource Cloud, Microsoft 365, Microsoft Excel, Microsoft Word, OmegaT, Powerpoint, Smartcat, Subtitle Edit, Subtitle Workshop, Transifex

CV/Resume CV available upon request
Events and training
Professional practices Javier Contreras endorses ProZ.com's Professional Guidelines.
Professional objectives
  • Meet new translation company clients
  • Learn more about additional services I can provide my clients
  • Learn more about the business side of freelancing
  • Help or teach others with what I have learned over the years
  • Transition from freelancer to another profession
  • Screen new clients (risk management)
  • Learn more about interpreting / improve my skills
  • Stay up to date on what is happening in the language industry
  • Meet new end/direct clients
  • Network with other language professionals
  • Get help with terminology and resources
  • Learn more about translation / improve my skills
  • Transition from freelancer to agency owner
  • Buy or learn new work-related software
  • Improve my productivity
Bio
14+ years of delivering linguistic precision for global industry leaders.

As a member of the National Association of Graduates in Translation and Interpreting (CONALTI) (member association of the International Federation of Translators (FIT/IFT)), I bridge the communication gap between complex technical sectors and the Spanish-speaking world. My approach combines a deep architectural background with cutting-edge AI-integrated workflows to deliver translations that are not only accurate but culturally and strategically impactful.

Why partner with me? I don’t just translate words; I localize experiences and secure compliance. My expertise is built on three high-stakes pillars:

- EdTech & Gamification: During my tenure at Duolingo and Amino Apps, I localized entire app ecosystems and curricula for millions of users, specializing in Linguistic Quality Assurance (LQA), gender-agreement audits, and cross-dialectal adaptation (Spanish MX, AR, ES, CO, VE).
- Fintech, Crypto & Web3: At Deriv and through Contentoo, I specialized in high-complexity trading platforms, blockchain terminology, and AML/Compliance content, achieving a consistent 100% quality score.
- Legal, Healthcare & Public Sector: Long-term collaborator for The Spanish Group and Baystate Interpreters, managing sensitive vital records (USCIS/Embassy standards), IEPs, and social housing documentation with strict confidentiality (HIPAA/FERPA-compliant).
-Technical Mastery: I leverage a robust CAT Tool stack (MemoQ, Phrase, SmartCat, Crowdin, Transifex) and Generative AI (Prompt Engineering) to optimize turnaround times while maintaining the highest stylistic integrity.

Core Specialized Areas:

- Engineering & AEC: 11-year tenure as the lead translator for the Advanced Building Skins International Conference.
- iGaming & Marketing: SEO-driven localization and transcreation for B2B and B2C global campaigns.
- Digital Excellence: Expert-level LQA, functional bug reporting, and subtitle synchronization.

Let's connect if you are looking for a proactive, tech-savvy linguist who understands that in localization, precision is the ultimate ROI.
Keywords: English, Spanish, business translation, sports, localization, LQA, DTP, MTPE, MT, proofreading. See more.English, Spanish, business translation, sports, localization, LQA, DTP, MTPE, MT, proofreading, translation, transcription, legal translation, medical translation, marketing translation, marketing, SEO translation, subtitling, educational translation, editing, reviewing, ChatGPT, AI tools, CAT tools, English to Spanish, Spanish to English, PEMT. See less.


Profile last updated
Jun 28



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