Remote STEM Jobs in Brazil
Rex.zone connects remote professionals with AI/ML and engineering work that strengthens model training pipelines, improves dataset reliability, and supports scalable evaluation operations across distributed teams.

Remote STEM Jobs in Brazil
Rex.zone connects remote professionals with AI/ML and engineering work that strengthens model training pipelines, improves dataset reliability, and supports scalable evaluation operations across distributed teams.
What You Will Do

• Support AI/ML pipelines through data labeling tooling, QA evaluation, and training data quality checks
• Execute prompt evaluation and structured feedback loops (RLHF) tied to large language model evaluation
• Validate named entity recognition outputs and perform error analysis for NLP tasks
• Review computer vision annotations (e.g., bounding boxes/segmentation) and ensure guideline compliance <...