Working languages:
English to Portuguese
Portuguese (monolingual)
Portuguese to English

Gilberto Castro Junior
EN↔PT Localization & AI Specialist

Rio de Janeiro, Rio de Janeiro, Brazil
Local time: 12:33 -03 (GMT-3)

Native in: Portuguese 
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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, AI + Human review (MT post-editing) , Transcription, Copywriting, Terminology management, Linguistic validation, AI training
Expertise
Specializes in:
IT (Information Technology)Business/Commerce (general)
Telecom(munications)Energy / Power Generation
Finance (general)Management
Transport / Transportation / ShippingShips, Sailing, Maritime
Computers: SoftwareScience (general)

KudoZ activity (PRO) PRO-level points: 4, Questions answered: 3
Experience Years of experience: 14. Registered at ProZ.com: Apr 2016.
ProZ.com Certified PRO certificate(s) N/A
Credentials English to Portuguese (Universidade Estácio de Sá)
Memberships N/A
Software Adobe Acrobat, Adobe Photoshop, ChatGPT, Claude, DeepL, Google Docs, MateCat, memoQ, MemSource Cloud, Microsoft 365, Microsoft Excel, Microsoft Word, Powerpoint, Smartcat, Trados Studio
CV/Resume English (PDF)
CPD

Gilberto Castro Junior's Continuing Professional Development

Professional objectives
  • Meet new end/direct clients
  • Network with other language professionals
  • Stay up to date on what is happening in the language industry
  • Improve my productivity
Bio

Bilingual (English–Portuguese) Language Technology Specialist with native-level proficiency in both languages, acquired in parallel during early childhood in the US, combined with 30+ years of IT leadership — including 25+ years across American multinational corporations (IBM, Unisys) — and 13+ years in professional translation and localization. Deep understanding of American business culture and Brazilian market dynamics, with a track record spanning enterprise software localization, technical documentation, and in-context linguistic QA/localization testing of translated applications. As a corporate program manager at Unisys, led system nationalization and localization for major Brazilian airline operations (Varig, Gol, TAM), combining project leadership with hands-on bilingual delivery. Additional experience includes large-scale institutional translation for government and defense procurement (Brazilian Navy) and technical/scientific content (theses, journal articles, grant proposals).

Specialized in cloud-based CAT tools (Phrase/Memsource, memoQ) and AI-enhanced translation workflows, including MTPE and evaluation of AI-generated linguistic output.

What sets me apart:

  • Native-level EN↔PT translation (both directions)
  • Executive-level business communication expertise
  • Deep technical knowledge from 30+ years of IT leadership, including 25+ years in corporate roles at American multinationals
  • In-context localization QA and testing experience
  • Direct client and institutional experience across energy, telecom, finance, maritime/defense, and science

Specializations: Software localization, UX/UI localization, localization testing, API documentation, technical manuals, executive correspondence, investor relations materials, scientific and academic translation, US–Brazil business communications.

Tools: Phrase (advanced, own paid subscription), memoQ, Claude AI, standard CAT tool formats (XLIFF, TMX, TBX).

Available for direct clients and agencies seeking premium quality EN↔PT translation with reliable delivery.

Keywords: Portuguese, English, bilingual translator, Brazilian Portuguese, software localization, UX/UI localization, localization testing, enterprise software, technical translation, medical translation. See more.Portuguese, English, bilingual translator, Brazilian Portuguese, software localization, UX/UI localization, localization testing, enterprise software, technical translation, medical translation, executive communications, investor relations, energy sector, telecom, government translation, scientific translation, maritime translation, MTPE, Phrase, Memsource, memoQ, Trados, terminology management, copyediting, linguistics, AI output evaluation, Claude AI, freelance translator, remote translator. See less.


Profile last updated
Sep 8



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