ppRex.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 through RLHF, prompt evaluation, QA evaluation, and content safety labeling. /ph3What You Will Do /h3ulliPerform data labeling for text, images, audio, and video using project tools /liliCreate RLHF preference comparisons, rankings, and evaluation examples /liliExecute QA evaluation checks for accuracy, consistency, and ambiguity handling; report systematic issues /liliConduct prompt evaluation and response grading for large language model evaluation /liliApply named entity recognition (NER) tagging, classification, and extraction per guidelines /liliComplete computer vision annotation (bounding boxes, polygons, keypoints, segmentation) as needed /liliPerform content safety labeling for categories like hate, harassment, sexual content, and self-harm /liliMaintain audit trails,



follow secure data handling procedures, and meet throughput targets /li /ulh3Required Qualifications /h3ulliExperience in data annotation/data labeling with measurable quality outcomes /liliAbility to follow complex rubrics and apply annotation guidelines consistently /liliFamiliarity with QA concepts (e.g., inter-annotator agreement, error categorization) /liliComfort working with NLP and/or computer vision datasets /liliStrong written communication for issue reporting and adjudication notes /liliAbility to work full-time remotely with reliable connectivity and secure work practices /li /ulh3How Quality Is Ensured /h3ulliGuidelines compliance checks, gold-standard calibration, peer review, and adjudication /liliQA evaluation metrics focused on accuracy, consistency, and reducing error patterns /li /ulh3Pay /h3pCompetitive hourly rate: $30-$50/hour (based on project scope and performance). /p /p #J-18808-Ljbffr

📌 Remote Data Annotator Jobs Barcelona
🏢 Rex.zone
📍 Barcelona