AI Trainers Network - Portuguese
Freelance Portuguese AI training network contributor; join global talent pool
Welo Data, part of Welocalize, is a global AI data company with 500,000+ contributors delivering high-quality, ethical data to train the world’s most advanced AI systems. We’re building smarter, more human AI with a diverse community in 100+ countries. At Welo Data, Limitless AI. Limitless You. isn’t just a slogan—it’s our promise. We build smarter AI through the power of human contribution, offering limitless opportunities for our global community to grow, contribute, and work on their terms. Are you detail-oriented and curious about tech? Welo Data is building a global network of linguists, language enthusiasts, and culturally aware contributors to shape safer, smarter AI. By joining our talent community, you’ll be first in line for flexible, remote projects in annotation, evaluation, and prompt creation—always on your terms. Note: This is not an active job opening. By applying, you’ll join our global contributor network. When a project aligns with your skills and availability, we’ll reach out with all the details, including scope, timeline, and compensation. What You’ll Need - Native or near-native fluency in Portuguese - Based in: Brazil, Portugal - English proficiency - Comfortable with digital tools - Detail-oriented and curious Why Join Us? 🚀 Limitless You – Work when and where you want, with room to grow 🤖 Limitless AI – Contribute to smarter, more inclusive AI 🌎 Be Part of Us – Join a global, supportive community About our projects: Welo Data projects vary by scope and complexity, but all play a role in building more accurate, inclusive, and human-centered AI. Depending on your skills, you might: 📝 Annotate or label text, images, or audio to train AI systems 🔍 Evaluate search results, ads, or chatbot responses for quality and relevance 💬 Create and test prompts to improve large language models (LLMs) 🌍 Ensure content reflects cultural, linguistic, or industry-specific accuracy Some projects last a few days; others may extend over several weeks. Before each one, you’ll receive clear details on tasks, timelines, and compensation, so you can decide what works best for you. How to Apply? Click the “Apply” button on our website to fill out a short form and join our talent database. It only takes a few minutes to get started and become part of our growing community. 📬 Questions? If you have any questions about the process, feel free to contact us at TalentRequests@welocalize.com.
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- Annotate or label text, images, or audio to train AI systems
- Evaluate search results, ads, or chatbot responses for quality and relevance
- Create and test prompts to improve large language models (LLMs)
- Ensure content reflects cultural, linguistic, or industry-specific accuracy
- Native or near-native fluency in Portuguese
- Based in Brazil or Portugal
- English proficiency
- Comfortable with digital tools
- Detail-oriented and curious
| Location | Active listings |
|---|---|
| Remote - Europe | 122 |
| Remote, Worldwide | 77 |
| Remote - Worldwide | 44 |
| India | 14 |
| Remote - Global | 11 |
| Finland | 10 |
| South Korea | 6 |
| Germany | 5 |
| Spain | 5 |
| Japan | 4 |
| Thailand | 4 |
| China | 4 |
| France | 4 |
| Indonesia | 4 |
| United States | 3 |
| Remote - Finland | 3 |
| Poland | 3 |
| Nigeria | 3 |
| Philippines | 3 |
| Malaysia | 2 |
| Greece | 2 |
| Slovenia | 2 |
| Hungary | 2 |
| Seoul, South Korea | 2 |
| Canada | 2 |
| Turkey | 2 |
| South Africa | 2 |
| Sweden | 2 |
| Netherlands | 2 |
| Norway | 2 |
| Denmark | 2 |
| Vientiane, Laos | 1 |
| Wales | 1 |
| Tashkent, Uzbekistan | 1 |
| Kazakhstan | 1 |
| Iceland | 1 |
| Global | 1 |
| Armenia | 1 |
| Mongolia | 1 |
| Austria | 1 |
| Cairo, Egypt | 1 |
| Brazil | 1 |
| Sarajevo | 1 |
| Santa Clara, CA | 1 |
| Kiev, Ukraine | 1 |
| Colombo, Sri Lanka | 1 |
| Ghana | 1 |
| Islamabad, Pakistan | 1 |
| Albania | 1 |
| New Zealand | 1 |
| Valetta, Malta | 1 |
| Belgium | 1 |
| Phnom Penh, Cambodia | 1 |
| Taiwan | 1 |
| North Macedonia | 1 |
| Italy | 1 |
| Georgia | 1 |
| Tel Aviv, Israel | 1 |
| Afghanistan | 1 |
| Singapore | 1 |
| Hong Kong | 1 |
| Remote | 1 |
| Addis Ababa, Ethiopia | 1 |
| Minsk, Belarus | 1 |
| Saudi Arabia | 1 |
| Vietnam | 1 |
| Berlin, Germany | 1 |
| Ireland | 1 |
| Slovakia | 1 |
| Bulgaria | 1 |
| Serbia | 1 |
| Lithuania | 1 |
| Kyrgyzstan | 1 |
| Croatia | 1 |
| Romania | 1 |
| United Kingdom | 1 |
| Katmandú, Nepal | 1 |
| Tbilisi | 1 |
| Azerbaijan | 1 |
| Czech Republic | 1 |
| Riga, Latvia | 1 |
| Galicia, Spain | 1 |
| Beijing, China | 1 |
| Porto, Portugal | 1 |
| Estonia | 1 |
| Role type | Active listings |
|---|---|
| AI Trainers Network | 52 |
| AI Trainer | 23 |
| Accessibility Tester | 5 |
| Sports Localization Specialist | 3 |
| Lyric Translation Reviewer | 3 |
| Ads Quality Rater | 2 |
| Shape the Future of AI | 2 |
| AI Data Annotator | 2 |
| Quality Control Specialist | 2 |
| Generative AI Analyst | 2 |
| Korean Lyrics Reviewer | 1 |
| AI Trainers Network Contributor | 1 |
| Tagalog AI Trainer | 1 |
| Patent Translator | 1 |
| Korean to English Patent Translator | 1 |
| Enterprise Solutions Sales Lead | 1 |
| Product Marketing Linguist | 1 |
| Linguist – Pharmacovigilance (Life Sciences) | 1 |
| AI Data Contributor | 1 |
| AI Trainers Network - Ukrainian | 1 |
| AI Trainers Network Belarusian | 1 |
| AI Trainers Network - Sinhala | 1 |
| Danish Culture Expert | 1 |
| Brazilian Subject Matter Expert in Law and Ethics | 1 |
| AI Trainers Network Latvian | 1 |
| Patent Translator / LQA Reviewer | 1 |
| Language Lead | 1 |
| Language Content Reviewer | 1 |
| Brazilian Subject Matter Expert in Politics | 1 |
| Pharmacovigilance Translator | 1 |
| AI Trainers Network Basque | 1 |
| Patent Linguist | 1 |
| Subject Matter Expert | 1 |
| Urdu Linguist | 1 |
| AI Trainer (Bosnian) | 1 |
| Translation Quality Reviewer | 1 |
| Sign Language Interpreter | 1 |
| Audio Contributor | 1 |
| Football Localization Specialist | 1 |
| AI Trainers Network - Malay | 1 |
| Data Contributor | 1 |
| AI Trainers Network Tajik | 1 |
| Subject Matter Expert in Animals and Pets | 1 |
| History Expert | 1 |
| Multimedia Content Reviewer | 1 |
| Korean Language Trainer Network | 1 |
| Arabic AI Trainer | 1 |
| Interpreter | 1 |
| Punjabi AI Trainer | 1 |
| Subject Matter Expert in Literature & Linguistics | 1 |
| Linguistic Tester | 1 |
| Music Localization Specialist | 1 |
| AI Trainers Network - Lao | 1 |
| Reviewer | 1 |
| AI Trainers Network Kannada | 1 |
| Non-Linguistic Quality Control Specialist | 1 |
| AI Trainers Network Marathi | 1 |
| German Accessibility Tester | 1 |
| Finnish Data Trainer | 1 |
| Spanish Accessibility Tester | 1 |
| Role level | Active listings |
|---|---|
| Mid-Level | 128 |
| Intern | 6 |
| Senior | 6 |
| Expert | 4 |
| Executive | 1 |
| Junior | 1 |
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