Curated remote opportunities

Remote AI & Data Training Jobs in Brazil 2026

2028 remote jobs open to candidates in Brazil in AI & Data Training. Updated daily.

Pasiflora AI
Annotation AI Assurance +12 Data Classification Accuracy Consistency Flexible Onboarding Contracts Training Data Annotation Structured Data Quality Assurance Attention to Detail Content Moderation
  • Remote (Global)
  • Apr 21, 2026

Label and annotate diverse datasets across text, images, and structured data to train and improve AI models at scale. Role details Domain: Technology Experience level: Industry Expert Required expertise: Data Labeling, Quality Assurance, Attention to Detail, Text Classification…

Meridial AI
Java AI Engineering +12 Training Concurrency JVM Algorithms Architecture Reasoning Logic Programming Open Source Writing Insurance Language Models
  • Remote (Global)
  • $45/hr
  • Apr 16, 2026

Java Coding Specialist - Freelance AI Trainer Project United States of America Are you a Java expert who can spot a flawed abstraction from across a codebase? Large-scale language models are evolving from clever chatbots into engines of real scientific and engineering progress.

Claru
Image & Video Annotation Contractor ↘ +4 regions
AI Precision Training +4 Onboarding Payments Video Games AI Training
  • United States, Canada, Mexico +1Brazil
  • $15 – $25/hr
  • Apr 16, 2026

We are hiring game data collectors to play video games while our software records your gameplay footage and keyboard/mouse inputs simultaneously. The recordings are used to train AI models that learn from human gameplay demonstrations.

Claru
Image & Video Annotation Contractor ↘ +4 regions
AI Training Annotation +11 Precision Management Quality Assurance Calibration English Reasoning AI Training Inventory Management Attention to Detail Annotation Tools Spatial Reasoning
  • United States, Canada, Mexico +1Brazil
  • $18 – $28/hr
  • Apr 16, 2026

We hire game annotators to label gameplay footage and input data for AI training. You will watch recorded gameplay sessions, identify actions and events, and tag them using our annotation platform.

AfterQuery
AI Expert - Biology Contractor
Bioinformatics Machine Learning Analysis +11 Research Genomics Transcriptomics Problem Solving Biology Flexible Biological Data Analysis Data Analysis Computational Biology Computer Science Data Science
  • Remote (Global)
  • $175/hr
  • Apr 16, 2026

This is a remote, project-based role for machine learning professionals with deep expertise in bioinformatics. You will complete tasks at the intersection of ML and biological data analysis — including model development, pipeline construction, and research tasks applied to real…

Rise Data Labs
Portuguese Nuance Make +7 Consistency Marketing ATen Cultural Nuance Structured Feedback Cultural Context Attention to Detail
  • Remote (Global)
  • Apr 8, 2026

We’re looking for contract, remote Portuguese-speaking annotators to evaluate AI-generated content with a sharp eye for detail and cultural nuance. You’ll be making judgment calls on whether outputs make sense and reflect real-world expectations in Portuguese.

Alignerr
Creative Writing Editing English +5 Localization Onboarding SEO Teaching Translation
  • Remote (Global)
  • $20–$40/hr
  • Apr 7, 2026

About Alignerr Alignerr connects domain experts with AI research initiatives to improve how language models understand, generate, and refine content across disciplines. Role Overview We are seeking skilled writers, editors, and language professionals to evaluate and…

Meridial AI
Alignment Portuguese AI +12 Sourcing Quality Assurance Communication Accuracy Annotation Testing Assurance Acting Documentation Nuance Linguistics Education
  • Brazil
  • $6 – $65/hr
  • Apr 5, 2026

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

Sigma AI
Language Data Full-time
Portuguese AI Annotation +12 Operations Collaboration Empathy Transcription Localization English macOS Audio Collection Android SDK iOS SDK Documentation Artificial Intelligence
  • Brazil
  • Mar 26, 2026

🌟 Join Sigma.AI – Shaping the Future of Artificial Intelligence 🌍 🔹 What is Sigma? Sigma is a leading global technology company specializing in data collection and annotation for Artificial Intelligence.

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