data annotation

2,808 vagas de data annotation em Brasil. Encontre vagas atualizadas diariamente.

  • AI Data Specialist Premium

    Há 21 horas


    São Paulo, Brasil RWS TrainAI Remoto Tempo integral US$ 6 Efetivo

    We are looking for an AI Data Specialist to support the improvement of AI-generated content in English.   Job Type: Freelance Location: Remote in Brazil Work Schedule: Part-time. Flexible, work whenever you want Start Date: Immediately Duration: Long-term project Rate: 6 USD/hour   Help Shape the Future of AI Are you a student, recent graduate,...


  • , Brasil Crossing Hurdles Tempo integral R$ 35.240 - R$ 50.191 Contrato

    Position: Speech AI Evaluation Specialist Portuguese (Brazil) Type: Hourly contract Compensation: $6 USD/hour Location: Remote (Brazil) Commitment: 10-40 hours/week Role Responsibilities Participate in short voice conversations with AI models using a designated platform. Follow provided scenarios and prompts during AI voice interactions. Evaluate...


  • , Brasil Alignerr Remoto Tempo integral

    Hospital Health Data Governance Lead (AI Training) About The Role What if your expertise in healthcare data governance could directly shape how AI understands and interprets hospital data systems — influencing tools that will support clinical decision-making for millions of patients? We're looking for experienced Hospital Health Data Governance Leads to...


  • Rio de Janeiro, Rio de Janeiro, Brasil Alignerr Remoto Tempo integral US$ 40 - US$ 80 Efetivo

    Biotech Health Data Governance Lead (AI Training) About The Role What if your expertise in biotech data governance could directly shape how AI understands and works with life sciences research? We're looking for a Biotech Health Data Governance Lead to ensure that clinical trial and research data is accurate, traceable, compliant, and ready to power the...


  • Rio de Janeiro, Rio de Janeiro, Brasil Alignerr Remoto Tempo integral US$ 40 - US$ 80 Efetivo

    Hospital Health Data Governance Lead (AI Training) About The Role What if your expertise in healthcare data governance could directly shape how AI understands, interprets, and works with clinical and operational health data? We're looking for experienced Hospital Health Data Governance Leads to help ensure that the health data used to train cutting-edge AI...

  • Data Annotator

    Há 6 dias


    Sucam, Mato Grosso, Brasil E-Solutions Tempo integral

    AI Model EvaluatorRemote (From Brazil)ContractWork: Remote | 8 hours/day | 5 days/week (working days may vary)Equipment: Candidate's own laptopMandatory ~2-hour assessmentJob DescriptionWe are looking for Portuguese speakers based in Brazil for an AI Model Evaluation project. The work will initially involve reading comprehension and evaluating/rating...


  • , Brasil Crossing Hurdles Tempo integral R$ 175.445 - R$ 280.713 Contrato

    Review and analyze screenshots of diverse software interfaces, identifying UI elements and interpreting user workflows with precision.Evaluate and annotate AI model responses, ensuring judgments are strictly grounded in what is visible on the screen.Distinguish between observable evidence and assumptions, documenting clear, well-reasoned explanations for...

  • Data Annotator for AI Models Premium

    Há 21 horas


    São Paulo, Brasil RWS TrainAI Remoto Tempo integral US$ 11 Efetivo

    Location: Remote working in Brazil (a one-time visit to our São Paulo office is required to pick up the equipment) Work Schedule: Full-time, Monday to Friday, 8:00 AM to 5:00 PM PST (Pacific Standard Time)  Experience: Previous experience in data annotation or content review is a plus Education: Bachelor’s degree required Contract duration: 3...


  • Carapicuíba, São Paulo, Brasil RWS Tempo integral R$ 78.000 - R$ 92.000 Contrato

    Location: Remote working in Brazil (a one-time visit to our São Paulo office is required to pick up the equipment)Work Schedule: Full-time, Monday to Friday, 8 AM to 5 PM PST (Pacific Standard Time)Experience: Previous experience in data annotation or content review is a plusCompensation: 11 USD/hourDoes this sound like you?Are you looking for remote,...

  • Project Epsilon Premium

    Há 21 horas


    Brazil Welo Global Remoto Tempo integral R$ 24 Efetivo

    About the Role  We are looking for detail-oriented Trainers to support an AI data annotation project. In this role, you will review pre-seeded questions paired with images and provide accurate "golden" answers based on what you observe in the image.  This is a task-based, remote-friendly opportunity ideal for individuals who are...

  • AI Trainer Premium

    Há 21 horas


    Brazil Toloka Annotators Remoto Tempo integral R$ 8 Efetivo

    DescriptionPlease submit your resume in English and indicate your level of English proficiency.Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment.What this opportunity involvesAnnotation is what helps...


  • São Paulo, São Paulo, Brasil aitrainer Tempo integral R$ 65.000 - R$ 92.000 Contrato

    Data Annotator for AI Models - Portuguese (Brazil) in Brazil São Paulo RWS – TrainAI Full-time Employee Remote Location: Remote working in Brazil (a one-time visit to our São Paulo office is required to pick up the equipment) Work Schedule: Full-time, Monday to Friday, 8:0 AM to 5:0 PM PST (Pacific Standard Time) Experience: Previous experience in data...

  • Data Annotator for AI Models Premium

    Há 3 dias


    São Paulo, Brasil RWS TrainAI Remoto Tempo integral US$ 11 Efetivo

    Location: Remote working in Brazil (a one-time visit to our São Paulo office is required to pick up the equipment) Work Schedule: Full-time, Monday to Friday, 8 AM to 5 PM PST (Pacific Standard Time) Experience: Previous experience in data annotation or content review is a plus Education: Bachelor’s degree required Contract duration: 3...


  • Salvador, Brasil G2i Inc. Tempo integral

    **Accepted Locations**: **Loom Video** We have created an Loom video that we highly recommend you watch! Check it out here: Loom Video **Overview** Join our expert annotation team to create training data for the world's most advanced AI models. No previous AI experience is necessary. You'll get your foot in the door with one of the most prominent players...

  • AI Data Quality Analyst Premium

    Há 4 dias


    , Brasil Alignerr Remoto Tempo integral

    About The Role AI systems are only as good as the feedback that trains them — and that's where you come in. We're looking for detail-oriented individuals to review, rate, and improve AI-generated outputs across text, image, and structured data formats. Your assessments directly influence how AI models learn, respond, and improve over time. This is a...


  • São Paulo, São Paulo, Brasil Jobless Tempo integral R$ 64.000 - R$ 93.000 Contrato

    Location: Remote working in Brazil (a one-time visit to our São Paulo office is required to pick up the equipment)Work Schedule: Full-time, Monday to Friday, 8 AM to 5 PM PST (Pacific Standard Time)Experience: Previous experience in data annotation or content review is a plusEducation: Bachelor’s degree requiredContract duration: TBCCompensation: 11...

  • Climate Data Specialist Premium

    Há 6 dias


    , Brasil Alignerr Remoto Tempo integral

    Climate Data Specialist (AI Training) About The Role What if your expertise in climate modeling, ecology, or environmental science could directly shape how AI understands our planet? We're looking for Climate Data Specialists with advanced degrees to develop and evaluate complex, real-world problems that train the next generation of AI models — making...


  • Belo Horizonte, Brasil Toloka Annotators Tempo integral

    **_Please submit your resume in English and indicate your level of English._** At Toloka, we connect smart, curious people from around the world with freelance online tasks that train and improve artificial intelligence. **What we do** The Toloka Annotators connects individuals with Generative AI projects from leading tech innovators. Our mission is to...


  • , Brasil Turing Remoto Tempo integral R$ 22.320 - R$ 44.640 Contrato

    1 day ago Be among the first 25 applicantsGet AI-powered advice on this job and more exclusive features.Turing is an AI-powered tech services company with a mission to accelerate AGI advancement and deployment by bridging the gap between global talent from 100+ countries and the world's best foundational LLM companies by helping them improve performance...

  • AI Trainer Premium

    Há 4 dias


    Belo Horizonte, Minas Gerais, Brasil Mindrift Data Annotation Projects Remoto Meio período US$ 8 Efetivo

    Please submit your resume in English and indicate your level of English proficiency. Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment. What This Opportunity Involves Annotation is what helps AI...