Full-time Posted June 05, 2026
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Job Description

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 <...

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