Updated: July 29, 2026 Location: Remote, SP, Brazil Job ID: Syneos Health® is a leading fully integrated biopharmaceutical solutions organization built to accelerate customer success. We translate unique clinical, medical affairs and commercial insights into outcomes
Rex.Zone is hiring a Remote Data Annotator to produce and validate labeled datasets for AI/ML systems across NLP, computer vision, and multimodal workflows. You will follow rubrics, resolve edge cases, and support LLM training pipelines through RLHF, prompt
Updated: July 29, 2026 Location: Remote, SP, Brazil Job ID: Syneos Health® is a leading fully integrated biopharmaceutical solutions organization built to accelerate customer success. We translate unique clinical, medical affairs and commercial insights into outcomes
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,
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
Rex.Zone is hiring a full-time Remote Data Annotator to produce and validate labeled datasets that improve AI/ML systems across NLP, computer vision, and multimodal workflows. You will follow detailed rubrics, resolve edge cases, and support LLM training pipelines
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