About Stéphane
Portuguese
Native or bilingual
French
Native or bilingual
English
Fluent
Spanish
Basic
Experience
- OutlierAI Trainer / RLHF EvaluatorTECHMarch 2026 - Today (3 months)Contributed to the evaluation and optimization of large language models (LLMs) through high-level Reinforcement Learning from Human Feedback (RLHF) workflows, supporting the development of reliable and production-ready AI systems.🔍 Core Contributions:• Performed in-depth evaluation of AI-generated outputs, assessing accuracy, coherence, safety, and contextual relevance.• Ranked and compared model responses to improve alignment, quality, and user-facing performance.• Executed advanced data annotation across text and multimodal datasets, including image-text coherence validation.• Conducted prompt evaluation and stress-testing to identify edge cases, inconsistencies, and potential failure modes.⚙️ Methodology & Expertise:• Applied rigorous evaluation frameworks and complex guidelines to ensure consistency and scalability.• Demonstrated strong analytical judgment in identifying subtle errors, risks, and nuanced contextual issues.• Contributed to high-quality datasets used for training and refining AI systems.🎯 Specialization:• AI Quality Evaluation • RLHF • LLM Testing • Multimodal Validation • AI Safety💼 Focused on delivering high-precision AI evaluation for advanced and production-level AI systems.
- AccentureCONTENT MODERATORSOCIAL NETWORKSNovember 2022 - Today (3 years and 7 months)Lisbon, PortugalEnsured the quality, safety, and compliance of user-generated content for a major social media platform, operating in high-volume and high-stakes environments.🔍 Key Contributions:• Reviewed and evaluated large volumes of content (text, image, video, audio) to enforce platform policies and safety standards.• Applied advanced contextual judgment to classify complex and ambiguous cases, including sensitive and high-risk content.• Identified, flagged, and escalated critical issues, ensuring rapid and accurate decision-making.⚙️ Performance & Impact:• Achieved 95% evaluation accuracy (target: 90%), demonstrating strong analytical precision and consistency.• Recognized as Top Performer (French Market) for two consecutive months (2025), based on quality and reliability metrics.🎯 Core Strengths:• Policy-based evaluation & complex decision frameworks.• Risk detection, edge case analysis & content safety.• High attention to detail in fast-paced environments.💡 This experience directly supports AI evaluation tasks such as RLHF, LLM response assessment, and multimodal data analysis.
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