Empleos de data annotator en Madrid

Synthires is seeking Generalists to contribute to a remote project focused on training and evaluating next-generation AI systems. You will analyze datasets, annotate inputs, and provide high-quality feedback while maintaining accuracy and attention to detail in a fully remote setting. Ideal candidates excel in critical thinking, communication, and time...

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...

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...

LXT AI is seeking Basque (Euskara) speakers for remote transcription, annotation and data collection tasks, including voice recordings. You will listen to audio/video content and produce accurate transcripts and labeled data according to project guidelines. Global reach, flexible remote work, and opportunities to contribute to multilingual AI training...

Odixcity Consulting is seeking a Security Engineer Annotator to evaluate cybersecurity datasets used in AI model training. You will analyze security datasets, code samples, and architectural designs to identify vulnerabilities and label security scenarios. The role requires 3+ years in cybersecurity or security engineering, knowledge of secure software...

CNTXT AI is seeking a senior localization contractor to perform data annotation, evaluation and content generation tasks for AI language projects. The role requires native Castilian Spanish and strong English, with precise linguistic judgement and cross-cultural sensitivity. Applicants should have a higher degree and experience in localization, CAT tools,...

Job Title: Web Data Analyst AnnotatorJob Summary: We are seeking for a detailed- oriented Web Data Analyst Annotator to collect, analyze, validate, and annotate web-based datasets used in training Artificial Intelligence and Large Language Models (LLMs). This role combines web research, data analysis, and annotation expertise to ensure that information...

Odixcity Consulting is seeking a Full Stack Engineer Annotator to assess frontend and backend datasets, ensuring AI models interpret full-stack workflows accurately. You will work with modern web tech and contribute to dataset labeling and evaluation. Candidates should have 3–5 years of experience as a Full Stack Developer, solid React/Angular/Vue skills,...

Synthires is seeking Generalists to contribute to a dynamic customer project focused on training and evaluating next-generation AI systems. This fully remote role emphasizes critical thinking, attention to detail, and clear communication, with no prior AI experience required. You will analyze, annotate, and review datasets to support AI training and...

Welo Global is seeking detail-oriented Trainers to support an AI data annotation project. This remote freelance role involves reviewing pre-seeded questions paired with images and providing gold-standard answers based on visual content. Ideal candidates are native Spanish speakers with strong English, a bachelor's degree, and meticulous attention to detail....

We’re hiring freelance AI Data Annotators for Spanish language alignment work. You'll listen to audio and align spoken words to their exact position in the transcript - correcting boundaries, catching mis-transcriptions, and making sure every word lands where it belongs. The work is detail-heavy and quiet. If you like careful, focused tasks and have a good...

Welo Global is seeking detail-oriented Trainers to support an AI data annotation project. This remote freelance role involves reviewing pre-seeded questions paired with images and providing gold-standard answers based on visual content.Ideal candidates are native Spanish speakers with strong English, a bachelor's degree, and meticulous attention to detail....

Perit AI (YC F26) is seeking freelance AI Data Annotators for Spanish language alignment. You will listen to audio and align spoken words to the transcript, correcting boundaries and mis-transcriptions with careful attention to timing and details. This role is fully remote and flexible, with no fixed schedule or minimum commitment. You choose tasks when...

Odixcity Consulting is seeking a detail-oriented Web Data Analyst Annotator to collect, analyze, validate, and annotate web-based datasets used in training AI and large language models. You’ll work with data scientists, AI trainers, and data operations teams to improve model reasoning, search quality, and automated web understanding systems.This role is...

Odixcity Consulting is seeking a Security Engineer Annotator to evaluate cybersecurity datasets used in AI model training. You will analyze security datasets, code samples, and architectural designs to identify vulnerabilities and label security scenarios. The role requires 3+ years in cybersecurity or security engineering, knowledge of secure software...

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, SpainWork Schedule: Monday – Friday during regular business hours (no weekends or holidays)Engagement Model: Full-time, temporaryLanguages Needed: Norwegian (Bokmal) and...

Synthires is seeking Generalists to contribute to a remote project focused on training and evaluating next-generation AI systems. You will analyze datasets, annotate inputs, and provide high-quality feedback while maintaining accuracy and attention to detail in a fully remote setting. Ideal candidates excel in critical thinking, communication, and time...

Odixcity Consulting is seeking a Security Engineer Annotator to evaluate cybersecurity datasets used in AI model training. You will analyze security datasets, code samples, and architectural designs to identify vulnerabilities and label security scenarios.The role requires 3+ years in cybersecurity or security engineering, knowledge of secure software...

Synthires is seeking Generalists to contribute to a dynamic customer project focused on training and evaluating next-generation AI systems. This fully remote role emphasizes critical thinking, attention to detail, and clear communication, with no prior AI experience required. You will analyze, annotate, and review datasets to support AI training and...

## 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 deployment....