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Leonardo Betfuer

@leonardobetfuer

I evaluate Brazilian Portuguese AI outputs using evidence-based rubrics, language judgment, and educational research experience.

Brazil

Message

What I'm looking for

I'm looking for remote or freelance work evaluating Brazilian Portuguese AI outputs, applying rubric-based assessment, language judgment, research, and evidence-based feedback.

I've taught History in São Paulo's municipal public education system since 2010, translating complex historical and social-science content into clear explanations and assessing learning through explicit criteria.

More recently, I contribute to Outlier and Aether AI evaluation projects, reviewing Brazilian Portuguese model responses, pairwise comparisons, and voice/TTS naturalness. My PhD in Education and research background strengthen my evidence-based approach to source evaluation, critical reading, and concise written rationales.

Experience

Work history, roles, and key accomplishments

Current

Freelance AI Evaluator and Data Annotator

Current

Outlier – Aether Project

Jan 2026 - Present (7 months)

Evaluate AI-generated responses using detailed rubrics and quality criteria, comparing outputs and identifying errors in accuracy, instruction-following, relevance, clarity, and localization. Review Brazilian Portuguese audio in TTS and speech-to-speech evaluation tasks, classify issues by category and severity, and provide evidence-based rationales.

AI Evaluation Data Annotation Quality Assurance Rubric Based Assessment Error Classification Brazilian Portuguese TTS Evaluation Speech to Speech Evaluation Attention To Detail Adherence to Guidelines

Education

Degrees, certifications, and relevant coursework

Federal University of São Paulo (UNIFESP)

Doctor of Philosophy, Education

PhD in Education with research focused on History of Education, African American educational history, intellectual history, and transnational history.