Empregos para data annotation em Porto

30 vagas de data annotation em Portugal. Encontre vagas atualizadas diariamente.


  • Porto, Porto, Portugal Welo Global Tempo integral 9 500 € - 12 000 € Contrato

    Job Overview:We are looking for detail-oriented Search & Data Labeling Raters to support an AI data annotation project focused on improving e-commerce search experiences. In this role, you will evaluate the relevance of search results by analyzing customer queries and matching them with appropriate products. Your work will directly contribute to enhancing...

  • German Search

    Há 1 dia


    Porto, Porto, Portugal Welo Global Remoto Tempo integral 9 500 € - 12 000 € Contrato

    Job Overview:We are looking for detail-oriented Search & Data Labeling Raters to support an AI data annotation project focused on improving e-commerce search experiences. In this role, you will evaluate the relevance of search results by analyzing customer queries and matching them with appropriate products. Your work will directly contribute to enhancing...


  • Porto, Porto, Portugal Jobgether Tempo integral 60 000 € - 80 000 € Contrato

    Overview This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Data and AI Engineer in EMEA. As a Data and AI Engineer, you will design, implement, and optimize advanced data pipelines and backend integrations to support next-generation cybersecurity and data-intensive platforms. You will work on scalable...

  • Senior AI Engineer

    Há 3 dias


    Porto, Porto, Portugal Tether.io Tempo integral 80 000 € - 140 000 € Contrato

    Senior AI Engineer - Data & Infrastructure for Multimodal Models (100% Remote) Join to apply for the Senior AI Engineer - Data & Infrastructure for Multimodal Models (100% Remote) role at Tether.io Senior AI Engineer - Data & Infrastructure for Multimodal Models (100% Remote) 3 days ago Be among the first 25 applicants Join to apply for the Senior AI...


  • Porto, Porto, Portugal G2i Inc. Tempo integral 47 291 € - 94 582 € Contrato

    Software Developer for Training AI Data – Remote Applying for the Software Developer for Training AI Data – Remote role at G2i Inc. Location & Employment Remote (Worldwide – see accepted locations below) Contract Type: Long‑term Contract Hours: Flexible, 15‑40+ per week Immediate Opportunity – Tool Use Sprint Starting This Week! We’re...


  • Vila do Porto, Portugal blueOASIS Tempo integral 28 000 € - 45 000 € Contrato

    blueOASIS is looking for a Senior Data Analyst – Underwater Acoustics to join our Security & Defence activities and contribute to the development of advanced maritime surveillance, underwater domain awareness and acoustic intelligence capabilities. The preferred work location is at blueOASIS facilities in Horta, Faial Island, Azores, Portugal, where the...


  • Porto, Porto, Portugal Crossing Hurdles Tempo integral 12 977 € - 17 696 € Contrato

    A tech company is seeking a part-time LLM – AI Quality Analyst (Personalization) to evaluate personalization features for AI models. This role requires fluency in Portuguese and experience in data annotation or AI quality evaluation. The candidate will work remotely, analyzing responses, designing conversational prompts, and providing structured feedback....

  • Linguist Annotator

    Há 4 dias


    Porto, Porto, Portugal Odixcity Consulting Tempo integral 40 000 € - 60 000 € Contrato

    JOB TITTLE Linguist Annotator LOCATION Remote (Worldwide) EMPLOYMENT TYPE Full Time JOB SUMMARY We are looking for an experienced Linguistic Annotator to lead high‑stakes language data annotation. In this role, you will apply advanced linguistic expertise to create, curate, and validate training data that teaches AI models to understand and generate...

  • Linguist Annotator

    Há 3 dias


    Porto, Portuguese Republic, Portugal Leading Consulting Firm Tempo integral

    Experienced Linguistic Annotator to lead AI language data annotation, creating, curating, and validating training data for natural language understanding and generation models.


  • Porto, Porto, Portugal Sword Health Tempo integral 58 100 € - 91 300 € Contrato

    At Sword, we’re building AI to heal billions and unlock humanity’s full potential. In doing so, we’re pioneering AI Care, a fundamentally new approach to healthcare built for medical reasoning, safety, and real-time treatment, not generic technology applied after the fact. As both a clinical-centric frontier AI lab and an applied AI platform, Sword is...


  • Porto, Porto, Portugal Mindrift Data Annotation Projects Tempo integral 12 € - 21 € Contrato

    Toloka is seeking annotators to review and label data for AI projects on a part-time, remote basis. You may rate AI-generated content, assess factual accuracy, or compare responses as projects are available. Compensation varies by project, with earnings up to $17 per hour equivalent. Applicants should have at least a bachelor's degree, 1 year of...


  • Porto, Porto, Portugal Phoenix Court Group Tempo integral 11 365 € - 16 186 € Contrato

    At Sword, we’re building AI to heal billions and unlock humanity’s full potential. In doing so, we’re pioneering AI Care, a fundamentally new approach to healthcare built for medical reasoning, safety, and real‑time treatment, not generic technology applied after the fact. As both a clinical‑centric frontier AI lab and an applied AI platform, Sword...


  • Porto, Porto, Portugal Phoenix Court Group Tempo integral 58 100 € - 91 300 € Contrato

    At Sword, we’re building AI to heal billions and unlock humanity’s full potential. In doing so, we’re pioneering AI Care, a fundamentally new approach to healthcare built for medical reasoning, safety, and real-time treatment, not generic technology applied after the fact. As both a clinical-centric frontier AI lab and an applied AI platform, Sword is...

  • AI Trainer

    Há 1 semana


    Porto, Porto District, Portugal Mindrift - Data annotation Tempo integral

    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...

  • Physiotherapist

    Há 1 semana


    Porto, Portugal Sword Health Tempo integral

    At Sword, we’re building AI to heal billions and unlock humanity’s full potential. In doing so, we’re pioneering AI Care, a fundamentally new approach to healthcare built for medical reasoning, safety, and real-time treatment, not generic technology applied after the fact. As both a clinical-centric frontier AI lab and an applied AI platform, Sword is...

  • Freelance Annotator

    Há 1 semana


    Porto, Porto District, Portugal Mindrift - Data annotation Tempo integral

    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...


  • Porto, Portugal Welo Global Remoto Tempo integral

    Overview:   Welo Data is looking for experienced quality reviewers to join a high-profile AI training data project in collaboration with one of the world’s leading voice AI platforms. As a Verifier, you will play a critical role in shaping the way AI understands and interacts with people globally by ensuring transcription accuracy and compliance with...


  • Porto, Portugal Welo Global Remoto Tempo integral

    Overview:  Welo Data is seeking attentive listeners to join an exciting AI training data project for one of the world's leading voice AI platforms. Your contributions will directly enhance how the platform understands Portuguese dialects.   What you will do: Listen to 5-second audio clips and transcribe them exactly as spoken.  Follow a clear,...


  • Porto, Portugal Welo Global Remoto Tempo integral

    Overview:   Welo Data is looking for experienced quality reviewers to join a high-profile AI training data project in collaboration with one of the world’s leading voice AI platforms. As a Verifier, you will play a critical role in shaping the way AI understands and interacts with people globally by ensuring transcription accuracy and compliance with...

  • AI Trainer

    Há 2 meses


    Porto, Santo Ildefonso, Portugal Toloka Annotators Meio período

    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 DoThe Toloka Annotators connects individuals with Generative AI projects from leading tech innovators. Our mission is to unlock...