freelance data annotator

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


  • Madrid, España G2 Recruitment Jornada completa

    G2 Recruitment is seeking a Freelance Project Manager with a Controls Engineering background for a hyperscale Data Centre project in Zaragoza, Spain.The role demands strong leadership of day-to-day service tickets, maintenance planning, and on-site vendor coordination.You will oversee BMS/EBMS tasks, report progress, and drive solutions in a fast-paced,...


  • Álava, España Lxt Ai Jornada completa

    Seeking Basque speakers for remote data annotation, transcription, and voice recording tasks to contribute to AI training datasets.Requires fluency in Basque, strong grammar, and attention to detail.

  • Remote AI Annotator

    Hace 1 semana


    Extremadura, España Toloka Annotators Jornada completa

    A leading AI development company seeks annotators for flexible, remote freelance projects involving the review and classification of data. Responsibilities include evaluating AI-generated content and ensuring factual accuracy. Candidates should possess a bachelor's degree and advanced English skills (C1 or higher). This role offers up to $17 per hour,...

  • Remote AI Data Annotator

    Hace 1 semana


    Comunidad de Madrid, España YO AI Labs Jornada completa

    YO AI Labs seeks a Generalist contractor to support AI and data-focused projects from a remote setting. The role involves reviewing, evaluating, and annotating information with high accuracy. Ideal candidates communicate clearly in English, demonstrate strong analytical thinking, and maintain meticulous attention to detail while managing time independently....

  • Remote AI Annotator

    Hace 1 semana


    Andalucía, España Toloka Annotators Jornada completa

    A leading AI development company seeks annotators for flexible, remote freelance projects involving the review and classification of data. Responsibilities include evaluating AI-generated content and ensuring factual accuracy. Candidates should possess a bachelor's degree and advanced English skills (C1 or higher). This role offers up to $17 per hour,...

  • Remote AI Annotator

    Hace 1 semana


    Santiago de Compostela, Galicia, España Toloka Annotators Jornada completa

    A leading AI development company seeks annotators for flexible, remote freelance projects involving the review and classification of data. Responsibilities include evaluating AI-generated content and ensuring factual accuracy. Candidates should possess a bachelor's degree and advanced English skills (C1 or higher). This role offers up to $17 per hour,...

  • French Data Annotator-11

    Hace 2 semanas


    Ceuta, España Centific Global Solutions, Inc. Jornada completa

    ## French Data Annotator-11Applylocations: Spain Officetime type: Full timeposted on: Posted Todayjob requisition id: JR107735**About Centific**Centific is a frontier AI data foundry that curates diverse, high-quality data, using our purpose-built technology platforms to empower the Magnificent Seven and our enterprise clients with safe, scalable AI...


  • Remote, España Mindrift Jornada completa

    This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. Lea atentamente toda la información sobre esta oportunidad y luego utilice el botón de solicitud de abajo para enviar su CV y su...


  • Balearic Islands, Islas Baleares, España Reboot Monkey Jornada completa

    Reboot Monkey is seeking Freelance Data Center Technicians to deliver on-demand support to global data centers. You will install, configure, and manage servers, networking gear, and related hardware, while resolving issues and maintaining uptime. The role requires independent work and strong communication with remote teams. You will monitor operations...


  • Madrid, España Ironhack, Inc. Jornada completa

    Ironhack, en colaboración con programas de formación oficial, busca un/a Formador/a Especialista en Big Data (Freelance) para impartir el curso: Especialista en Big Data, con fechas desde el 3 de noviembre de 2026 al 11 de marzo de 2027, en Bilbao, presencial.El objetivo es capacitar al alumnado en tratamiento y gestión de grandes volúmenes de datos...


  • Región de Murcia, España Mindrift Jornada completa

    This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. What...


  • España Docplanner Jornada completa

    Docplanner is seeking a Freelance Spanish Data Annotation Specialist to prepare and curate linguistically and medically oriented datasets in Spanish for ML and NLP initiatives. You will work independently with our NLP experts to ensure data accuracy for the Spanish market and contribute to AI-driven medical products. Ideal candidate has a strong Spanish...


  • Laza, Ourense, Verín (comarca); Provincia de Orense; Galicia, España Mindrift Jornada completa

    This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift , innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. ...

  • Senior Data Engineer

    Hace 1 semana


    Álava, España Netguru Jornada completa

    Netguru is a trusted partner in digital commerce.The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems.Since ****, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams.A certified B Corporation®, Netguru is trusted by major brands including...

  • Data Scientist

    Hace 1 semana


    Madrid, España Mindrift Jornada completa

    OverviewMindrift 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 InvolvesWhile each project involves unique tasks, contributors may:Design original computational data science problems...

  • Data Scientist

    Hace 1 semana


    Málaga, España Mindrift Jornada completa

    DescriptionPlease submit your CV 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 involvesWhile each project involves...

  • Freelance Annotator

    Hace 2 semanas


    , , spain Toloka Annotators Jornada completa

    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 unlock the full...

  • AI Trainer

    Hace 2 semanas


    , , spain 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 in online...


  • España Mindrift Jornada completa

    Mindrift is seeking a Freelance Data Scientist AI Trainer to work remotely on a part-time basis. The role focuses on designing computational problems for AI training, requiring strong Python and SQL skills, plus solid statistical analysis and ML expertise.The position is remote and flexible, ideal for specialists who can deliver high-quality datasets and...


  • , , spain Mindrift Jornada completa

    This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We believe in using the power of collective intelligence to ethically shape the future of AI. ...