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Rafael Horta

Rafael Horta

AI Prompt Evaluator - Technology & Internet

BRAZIL flag
Belo Horizonte, Brazil
$8.00/hrExpertAppenScale AITelus

Key Skills

Software

AppenAppen
Scale AIScale AI
TelusTelus

Top Subject Matter

No subject matter listed

Top Data Types

TextText

Top Label Types

Classification
Emotion Recognition
Evaluation Rating
Fine Tuning
Prompt Response Writing SFT
Translation Localization

Freelancer Overview

I am an experienced AI data evaluator with a strong background in data labeling, annotation, and training data quality for machine learning applications. My work includes evaluating LLM prompts for accuracy and safety, assessing and annotating social media content, and improving search engine algorithms through detailed analysis and feedback. I have contributed to projects focused on NLP, ad evaluation, content moderation, and search relevance, leveraging my skills in English and Portuguese. My academic background in Artificial Intelligence, combined with hands-on experience in SEO and LLMs, enables me to deliver precise and reliable data for AI model training and evaluation. I am comfortable working remotely and thrive in dynamic, project-based environments.

ExpertEnglishPortuguese

Labeling Experience

Scale AI

LLM Evaluation

Scale AITextEvaluation Rating
Evaluate LLM responses and users prompts. Focusing on accuracy, safety and rating accordingly specific guidelines.

Evaluate LLM responses and users prompts. Focusing on accuracy, safety and rating accordingly specific guidelines.

2024 - 2025
Telus

Internet Annotator

TelusTextEvaluation Rating
Improve search engine algorithm and users experience with internet pages.

Improve search engine algorithm and users experience with internet pages.

2023 - 2025
Appen

Query-Result Categorization

AppenTextClassification
Judge whether the Query indicates the user's intention to ask for help with regard to a specific topic and judge whether in the context of what the user previously viewed it is likely their intention is to ask for help with regard to a specific topic.

Judge whether the Query indicates the user's intention to ask for help with regard to a specific topic and judge whether in the context of what the user previously viewed it is likely their intention is to ask for help with regard to a specific topic.

2022 - 2025

Education

P

Pontifical Catholic University

Bachelor of Science, Artificial Intelligence

Bachelor of Science
2021 - 2025

Work History

W

Wise

English Teacher

Belo Horizonte
2021 - 2021