Empleos de data annotator en Madrid

50 ofertas de empleo de data annotator en España. Encuentra ofertas actualizadas diariamente de los principales portales de empleo.


  • Madrid, Madrid, España Sigma AI Jornada completa

    Sigma.AI busca perfiles para un rol de procesamiento lingüístico en Madrid. Serás responsable de categorizar, anotar, corregir y transcribir contenido en varios idiomas, con foco en calidad y precisión.Se valorará experiencia en evaluación de interacciones, grabación de voz y proyectos de localización. Requisitos: italiano nativo o bilingüe y...


  • Madrid, Madrid, España Sigma AI Jornada completa

    Sigma.AI busca perfiles para un rol de procesamiento lingüístico en Madrid. Serás responsable de categorizar, anotar, corregir y transcribir contenido en varios idiomas, con foco en calidad y precisión.Se valorará experiencia en evaluación de interacciones, grabación de voz y proyectos de localización. Requisitos: italiano nativo o bilingüe y...


  • Madrid, Madrid, España Welo Data Jornada completa

    A leading AI training company is seeking detail-oriented linguists for remote projects involving annotation, evaluation, and prompt creation. Candidates must have native or near-native fluency in Catalan and English proficiency. Responsibilities include annotating text and testing AI systems while enjoying flexible conditions. Join our talent community and...


  • Madrid, Madrid, España Welo Data Jornada completa

    A leading AI training company is seeking detail-oriented linguists for remote projects involving annotation, evaluation, and prompt creation. Candidates must have native or near-native fluency in Catalan and English proficiency. Responsibilities include annotating text and testing AI systems while enjoying flexible conditions. Join our talent community and...


  • Madrid, Madrid, España Sigma AI Jornada completa

    Sigma.AI busca perfiles para un rol de procesamiento lingüístico en Madrid. Serás responsable de categorizar, anotar, corregir y transcribir contenido en varios idiomas, con foco en calidad y precisión.Se valorará experiencia en evaluación de interacciones, grabación de voz y proyectos de localización. Requisitos: italiano nativo o bilingüe y...


  • Madrid, Madrid, España Welo Data Jornada completa

    A leading AI training company is seeking detail-oriented linguists for remote projects involving annotation, evaluation, and prompt creation. Candidates must have native or near-native fluency in Catalan and English proficiency. Responsibilities include annotating text and testing AI systems while enjoying flexible conditions. Join our talent community and...


  • Madrid, Community of Madrid, España LxT AI Jornada completa

    LxT AI is seeking Catalan speakers for transcription and annotation on remote projects. The ideal candidates will transcribe audio and video accurately, adhere to guidelines, and perform data classification. Attention to detail and proficiency in grammar and spelling are essential. Join LxT AI, a leader in AI training data, supporting global organizations...


  • Madrid, Community of Madrid, España Centific Global Solutions, Inc. Jornada completa

    A dynamic technology company in Spain is seeking a Data Annotator to enhance conversational AI performance. This role requires verifying data, reviewing model outputs, and supervising junior staff, with a focus on ensuring quality standards. Ideal candidates will have 1-2 years of experience in relevant fields and strong communication skills. While...


  • Madrid, Community of Madrid, España TransPerfect Jornada completa

    OverviewData Force by TransPerfect is currently looking for a Language Data Annotator with fluency in Norwegian (Bokmal) to join our team in Barcelona, Spain. Work Location: Barcelona, Spain Work Schedule: Monday – Friday during regular business hours (no weekends or holidays) Engagement Model: Full-time, temporary Languages Needed: Norwegian (Bokmal) and...


  • Madrid, Community of Madrid, España TransPerfect Jornada completa

    A language and technology solutions provider in Barcelona is looking for a Language Data Annotator fluent in Norwegian (Bokmal). The role involves analyzing language data, classifying and labeling information, and developing interaction prompts. A bachelor’s degree and proficiency in English are essential. This full-time, temporary position is suitable for...


  • Madrid, Community of Madrid, MD, España Rex.zone Trabajo remoto Jornada completa

    **About The Role** As a Remote Data Annotator, you will perform end-to-end data annotation and AI/ML evaluation work that powers training datasets for NLP, computer vision, and large language model evaluation. You will follow detailed annotation guidelines, document edge cases, and contribute to training data quality initiatives that improve model...

  • Remote AI Annotator

    Hace 14 horas


    Madrid, Madrid, España Toloka Annotators Jornada completa

    Toloka Annotators is seeking freelance annotators to engage in remote AI-driven projects. As an annotator, you will be responsible for reviewing and labeling data, ensuring accuracy, and maintaining quality in various media formats.This role requires a Bachelor's degree and advanced English proficiency (C1 or higher). Candidates should possess strong...

  • Remote AI Annotator

    Hace 2 días


    Madrid, Madrid, España Toloka Annotators Jornada completa

    Toloka Annotators is seeking freelance annotators to engage in remote AI-driven projects. As an annotator, you will be responsible for reviewing and labeling data, ensuring accuracy, and maintaining quality in various media formats.This role requires a Bachelor's degree and advanced English proficiency (C1 or higher). Candidates should possess strong...

  • Remote AI Annotator

    Hace 5 horas


    Madrid, Madrid, España Toloka Annotators Jornada completa

    Toloka Annotators is seeking freelance annotators to engage in remote AI-driven projects. As an annotator, you will be responsible for reviewing and labeling data, ensuring accuracy, and maintaining quality in various media formats.This role requires a Bachelor's degree and advanced English proficiency (C1 or higher). Candidates should possess strong...

  • AI Trainer

    Hace 7 días


    Madrid, Community of Madrid, España Toloka Annotators Jornada completa

    Please submit your resume in English and indicate your level of English.What We Do At Toloka, we connect smart, curious people from around the world with freelance online tasks that train and improve artificial intelligence.About The Role Annotation is what helps AI make sense of the world. As an annotator, you may be invited to take part inonline...


  • Madrid, Comunidad de Madrid, España Rex.zone Trabajo remoto Jornada completa 26.000 € - 38.000 € Por obra

    Remote Data Labeling Jobs in Madrid (Fully Remote) Rex.zone is hiring for a full-time, fully remote data labeling role focused on training-data creation and quality control for AI/ML systems. You will label and evaluate text, images, audio, and conversations used in large language model evaluation and computer vision annotation workflows, improving training...

  • Freelance Annotator Premium

    Hace 7 días


    Madrid, Community of Madrid, España Mindrift - Data annotation Trabajo remoto Media jornada 13 US$ Indefinido

    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 make...

  • Remote Data Annotation

    Hace 7 días


    Madrid, Community of Madrid, España DocPlanner Jornada completa

    Docplanner is seeking a data-conscious QA annotator to design, automate, and run QA workflows and measure quality across projects. You’ll support labeling interfaces in Label Studio, write clear annotation guidelines, and onboard freelance annotators to keep projects moving. You will also assist in data analysis and reporting to track project health and...


  • Madrid, España micro1 Jornada completa

    Spanish Language Expert (Spain) - AI Trainer **Role Type**: Contractor **Location**: Remote About the Role micro1 is engaging **Spanish Language Experts (Spain)** to contribute their linguistic expertise to a customer project focused on advancing next-generation AI systems. No prior experience in AI is required — your language expertise is what...


  • Madrid, Community of Madrid, MD, España Rex.zone Trabajo remoto Jornada completa

    **Remote Data Labeling Jobs in Madrid (Fully Remote)** Rex.zone is hiring for a full-time, fully remote data labeling role focused on training-data creation and quality control for AI/ML systems. You will label and evaluate text, images, audio, and conversations used in large language model evaluation and computer vision annotation workflows, improving...