Curated remote opportunities

Remote AI & Data Training Jobs in Brazil 2026

1997 remote jobs open to candidates in Brazil in AI & Data Training. Updated daily.

AI Tutor - Writing

xAI
AI & Data Training Full-time
AI Writing Make +12 Microsoft Teams Accuracy Annotation English Grammar Consistency Creativity Precision Communication Sales Mechanics Documentation
  • Remote (Global)
  • $35 – $75/hr
  • May 19, 2026

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not.

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Machine Learning Evaluation Specialist

Alignerr
AI Expert - Machine Learning & AI Research Freelancer Ongoing
Machine Learning Research Data Science +11 Reinforcement Learning LLM Evaluation Model Evaluation Feature Engineering ML Pipelines Scientific Computing Quantitative Analysis Natural Language Processing Signal Processing Research Writing Technical Communication
  • Remote (Global)
  • $200 - $400/hr
  • May 18, 2026

Alignerr is seeking machine learning domain experts to help design advanced evaluation challenges for frontier AI systems. This role focuses on building expert-level machine learning evaluation tasks that test the limits of state-of-the-art AI models using deep scientific and…

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OpenClaw Agent Builder (Software Developers)

Outlier
AI Expert - AI Systems & Automation Contractor
Python JavaScript Go +11 Java SQL Backend Engineering Systems Integration APIs Security Testing Agentic Workflows Prompt Injection Testing Workflow Orchestration Automation System Architecture
  • Remote (Global)
  • Up to $35/hr + incentives
  • May 18, 2026

Outlier is seeking experienced software developers and systems engineers to help train and evaluate next-generation autonomous AI agents such as OpenClaw. This freelance remote opportunity focuses on improving large language model (LLM) agents that can coordinate complex,…

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Securities & Commodities Specialist - Freelance AI Trainer Project

Meridial AI
AI Expert - Finance Full-time
AI Analysis Training +12 Education Decision Making Finance Management Derivatives Compliance Modeling Reporting Valuation Contracts Algorithms Reasoning
  • Remote (Global)
  • $6 - $65/hr
  • May 18, 2026

Are you a securities, commodities, and financial services expert eager to shape the future of AI? Large‑scale language models are evolving from clever chatbots into powerful engines of financial insight and market analysis.

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Portuguese Language Specialist (Brazil) - Freelance AI Trainer Project

Meridial AI
Bilingual LLM & Translation Full-time
Portuguese AI Training +12 Education Research Communication Phonetics Morphology Syntax Semantics Pragmatics Microsoft Word Expressions Reasoning Accuracy
  • Brazil
  • $6 - $65/hr
  • May 18, 2026

Are you a Portuguese (Brazil) language expert eager to shape the future of AI? Large‑scale language models are evolving from clever chatbots into powerful engines of linguistic discovery.

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Swahili Language Specialist - Freelance AI Trainer Project

Meridial AI
Bilingual LLM & Translation Full-time
Swahili AI Training +12 Education Research Communication Grammar Syntax Morphology Semantics Phonetics Pragmatics Expressions Pronunciation Reasoning
  • Remote (Global)
  • $6 - $65/hr
  • May 17, 2026

Are you a Swahili language expert eager to shape the future of AI? Large‑scale language models are evolving from clever chatbots into powerful engines of linguistic discovery.

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Business Owners - Freelance AI Trainer Project

Meridial AI
AI Expert - Management & Strategy Full-time
AI Sourcing Mapping +12 Accuracy Verification Audit Testing Management Auditing Operations Reporting Communication User Experience Mechanics Insurance
  • Remote (Global)
  • $25 – $100/hr
  • May 15, 2026

We are sourcing independent Business Owners across the food, lodging, service, and shopping sectors to provide their practical expertise for an AI benchmark evaluation and product feedback project.

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Vocal Audio Specialist - Freelance AI Trainer Project

Meridial AI
Transcription & Audio Training Full-time
AI Sourcing Training +11 Accuracy Consistency Engineering History Voiceover Insurance Model Training Audio Engineering Quality Control Music Production Following Instructions
  • Remote (Global)
  • $6 – $65/hr
  • May 15, 2026

We are sourcing independent Vocal Audio Specialists to provide their expertise for an AI audio model training project. As AI models increasingly generate and interpret human musicality and vocal nuances, their accuracy relies entirely on robust, high-fidelity training data.

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Language Alignment & Resource Partner (Azerbaijani) - Freelance AI Trainer Project

Meridial AI
Bilingual LLM & Translation Full-time
Alignment Azerbaijani AI +12 Sourcing Quality Assurance Communication Accuracy Annotation Testing Assurance Acting Documentation Nuance Linguistics Education
  • Remote (Global)
  • $6 – $65/hr
  • May 14, 2026

We are sourcing independent Language Alignment & Resource Partners (LARPs) to provide native-level Azerbaijani language vetting and QA for a specialized AI data project.

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Expert Audio Transcriber, Portuguese (Brazilian)

Perle
Transcription & Audio Training Contractor
Portuguese AI Infrastructure +12 Training Nuance Orthography Onboarding Make Quality Assurance Calibration Transcription Captioning Reporting Translation Annotation
  • Brazil
  • May 14, 2026

Perle is an AI infrastructure company building expert-driven training data, evaluation systems, and applied AI products for the world's leading labs and enterprises. Our partners include xAI, Samsung, ELM, and Unisys.

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Language Alignment & Resource Partner (Arabic) - Freelance AI Trainer Project

Meridial AI
Bilingual LLM & Translation Full-time
Alignment Arabic AI +12 Sourcing Quality Assurance Communication Accuracy Annotation Testing Assurance Acting Documentation Nuance Linguistics Education
  • Remote (Global)
  • $6 – $65/hr
  • May 14, 2026

We are sourcing independent Language Alignment & Resource Partners (LARPs) to provide native-level Arabic language vetting and QA for a specialized AI data project.

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Brazilian Portuguese - Food, Drink & Culinary Culture Subject Matter Expert (SME)

RWS
AI Expert - Humanities Contractor ↻ Reposted
Portuguese Culture AI +12 Writing Reasoning Journalism Hospitality Nutrition Management English Flexible Training Nuance Precision Communication
  • Brazil
  • $21.60/hr
  • May 8, 2026

Help shape the future of AI in Brazil! We are building a next‑generation benchmark to evaluate how well AI systems handle complex, real‑world questions in Brazilian Portuguese.

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Brazilian Portuguese - TV, Film, Animation & Cartoons Subject Matter Expert (SME)

RWS
AI Expert - Humanities Contractor ↻ Reposted
Portuguese Animation AI +12 Writing Reasoning Journalism Scriptwriting Culture English Flexible Training Nuance Precision Communication Research
  • Brazil
  • $26.40/hr
  • May 8, 2026

Help shape the future of AI in Brazil! We are building a next‑generation benchmark to evaluate how well AI systems handle complex, real‑world questions in Brazilian Portuguese.

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