Remote Data Annotator Jobs in Berlin

About The Role Rex.zone is hiring Mid-Senior Remote Data Annotators to create and validate high-quality training datasets used to train and evaluate AI/ML systems. You will work across text, image, and multi-modal workflows, applying consistent rubric-based decisions and clear documentation to support measurable model performance improvement.

What You Will Do

• Label and review datasets for NLP and computer vision annotation (e.g., named entity recognition, classification, bounding boxes/segmentation)
• Perform RLHF evaluation and prompt evaluation by scoring and ranking model outputs against guidelines
• Complete QA evaluation checks (audit sampling, calibration, disagreement resolution) and maintain annotation guidelines compliance
• Support content safety labeling using policy-based categorization and safety rubrics
• Collaborate asynchronously with project leads to meet throughput, accuracy, and auditability requirements in LLM training pipelines

Required Qualifications

• Mid-Senior experience in data annotation/data labeling, QA evaluation, or LLM evaluation workflows
• Strong attention to detail and ability to handle ambiguous cases with consistent reasoning
• Excellent written communication for documenting edge cases and rationales
• Comfort with annotation tools and spreadsheet-style review interfaces

How To Apply Visit Rex.zone and search for “Remote Data Annotator Jobs in Berlin” to find active assignments and submit your application.