Youssef Mamdouh

Key Skills

Software

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Freelancer Overview

Leveraging a deep academic background in French Linguistics and over 6 years of experience in technical quality assurance, I specialize in high-fidelity data labeling and the optimization of Large Language Models (LLMs). My expertise lies in evaluating complex AI outputs for grammatical precision, semantic accuracy, and cultural nuance in both French and Arabic. As a Senior QA Executive, I apply a rigorous auditing methodology to data annotation, ensuring that training sets for machine learning models meet the highest standards of safety, logic, and instructional following.

Labeling Experience

Multilingual RLHF and Linguistic Validation for LLM Fine-Tuning

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Managed high-complexity data annotation and linguistic validation projects focused on training Large Language Models (LLMs) for the French and Arabic markets. My role involved performing Reinforcement Learning from Human Feedback (RLHF) to evaluate model responses for accuracy, safety, and cultural relevance.

Managed high-complexity data annotation and linguistic validation projects focused on training Large Language Models (LLMs) for the French and Arabic markets. My role involved performing Reinforcement Learning from Human Feedback (RLHF) to evaluate model responses for accuracy, safety, and cultural relevance.

2025 - 2025

Education

Work History