🌴 JobsLeisure.com

Where Work Meets Adventure

← Back to Leisure Jobs

AI Data Annotation Specialist in Brazil

Hospitality Full Benefits Career Growth
Company

Rex.zone

Location

Remote, Brazil

Posted

June 05, 2026

Start Your Adventure

Join our team and work where others vacation

Apply Now

About This Opportunity

Overview

Remote, full-time AI/ML data operations role supporting LLM training pipelines from Brazil. You will deliver high-quality annotations, evaluations, and QA using clear rubrics and strict guideline compliance.

What You Will Do

  • Perform AI data annotation and data labeling for LLM training datasets
  • Complete RLHF preference ranking, prompt evaluation, and QA evaluation tasks using consistent rubrics
  • Improve training data quality by reducing label noise and documenting edge cases
  • Execute NLP tasks such as named entity recognition and classification
  • Support computer vision annotation (bounding boxes, polygons, segmentation) when needed
  • Handle content safety labeling aligned to policy/risk taxonomies
  • Collaborate with engineering/ops on error analysis and rubric updates

Required Qualifications

  • Mid-Senior experience in annotation, LLM evaluation, or data la...