Empleos de data annotation en Madrid

Remote Data Annotation Jobs Madrid (Full-Time, Remote)Join production-grade AI/ML training workflows by labeling and evaluating data used to improve model performance across NLP, computer vision, and content safety systems. You will follow strict rubrics and maintain strong annotation guidelines compliance to protect training data quality for LLM training...

Rex.zone in Madrid is seeking remote data annotators to join our real-world AI/ML labeling programs.Por favor, asegúrese de leer atentamente los siguientes detalles antes de enviar cualquier solicitud.You will follow strict rubrics and work on multilingual NER, content safety labeling, and image-text alignment tasks in a fully remote, full-time...

Rex.zone is seeking a Remote Data Annotator to support end-to-end annotation and AI/ML evaluation for NLP, CV, and LLM assessment.Si sus habilidades, experiencia y cualificaciones coinciden con las de esta descripción del puesto, no demore su solicitud.You will follow guidelines, document edge cases, and contribute to data quality initiatives to improve...

Straumann GroupAt Straumann Group we’re on an exciting journey of growth, innovation, and impact - driven by our mission to improve oral health and transform millions of lives worldwide. United by purpose, we bring our best selves to work every day, embracing a high-performance, player-learner culture that inspires collaboration, curiosity, and ambition....

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...

About The RoleAs 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...

ResponsibilitiesRobot Operation Operate robotic systems using teleoperation interfaces and specialized controllers Perform demonstrations of physical tasks to generate training data Execute repetitive tasks with a strong focus on consistency and quality Follow detailed operational procedures and data collection protocols Data Collection & Annotation Capture...

A leading tech company situated in Madrid is on the lookout for an AI Content Expert II. This role requires the creation and annotation of complex training data involving writing in various styles. Candidates must exhibit proficiency in Dutch and English, along with strong research abilities. Working closely with a diverse team in the office, you will help...

YO IT Consulting is seeking an AI Trainer Lead to join as a remote, contract-based role. You will train next-generation AI systems by guiding data annotation and evaluation to shape how models learn, reason, and perform through high-quality inputs.The role emphasizes meticulous rubric-based scoring, cross-domain content review, and actionable feedback for...

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 LLM evaluation and computer vision annotation workflows, improving training data quality, annotation consistency, and model performance.This...

About The RoleCualquier información adicional que necesite para este trabajo se encuentra en el texto a continuación. Asegúrese de leerla detenidamente y luego envíe su solicitud.We are looking for Robotics AI Data Collection Operators to support the development of next‑generation intelligent robotic systems. In this role, you will interact directly...

About CentificPuede obtener más detalles sobre la naturaleza de esta vacante y lo que se espera de los solicitantes leyendo la información a continuación.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,...

Precision Medicine Data Lead (AI Training) About The Role What if your expertise in genomics and clinical data could directly shape how AI understands and advances personalized medicine? We're looking for a Precision Medicine Data Lead to help build and refine the AI systems that are transforming healthcare — turning complex biological and clinical...

A technology company in Madrid seeks an AI Content Expert II for data annotation and content generation. Responsibilities include creating training data across modalities, performing quality checks, and making judgments on ambiguous data. The ideal candidate should be proficient in Dutch and English and have a high-school diploma or equivalent, with a strong...

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 health data governance leaders to help ensure hospital data used in AI training is accurate, trusted,...

CNTXT AI is a leading artificial intelligence company focused on building next-generation AI systems, products, and infrastructure. We specialize in developing multimodal AI, robotics, and intelligent agents, powered by high-quality real-world data. Data is at the core of our innovation. We invest heavily in data collection, annotation, and AI training...

Centific is seeking detail-oriented data annotators to label large datasets with high accuracy, interpreting complex guidelines and applying them consistently. You will provide feedback to improve annotation tools and processes, and collaborate with QA and project managers to ensure data quality across projects. Join a team of AI practitioners committed to...

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 reasons about clinical research, regulatory science, and life sciences data? We're looking for a Biotech Health Data Governance Lead to ensure that the research and clinical trial data powering...

About Welo Data Welo Data,a WeloGlobalbrand,is the multilingual data and evaluation partner for foundation labs and enterprises deploying GenAI systems globally.Theydeliverthe humanjudgment, data infrastructure, and evaluation systems that ensure AI models perform reliably across languages, cultures, and real-world contexts, at every stage from training...

About the Role We are looking for Robotics AI Data Collection Operators to support the development of next-generation intelligent robotic systems. In this role, you will interact directly with robotic platforms, perform structured tasks, and generate high-quality demonstration data used to train advanced AI models. Your work will contribute to the...