Guillaume Duchateau

Key Skills

Software

Data Annotation Tech

Labelbox

Mindrift

Other

Top Subject Matter

No subject matter listed

Top Data Types

Text

Image

Audio

Top Task Types

Translation Localization

RLHF

Evaluation Rating

Red Teaming

Prompt Response Writing SFT

Fine Tuning

Question Answering

Emotion Recognition

Audio Recording

Transcription

Text Summarization

Freelancer Overview

I am a multilingual AI trainer with over 13 years of experience specializing in data labeling, annotation, and AI training data for large language models and NLP systems. My expertise spans prompt engineering, response evaluation, and quality assurance in both English and French, with hands-on work in chatbot analysis, audio data evaluation, and computer vision tasks such as image-based prompt generation. I have contributed to major projects for Big Tech clients, including knowledge graph management, RLHF fine-tuning, and large-scale data QA, ensuring linguistic accuracy, cultural relevance, and high data integrity. My background also includes creating and peer-reviewing rubrics, conducting audio and voice activity detection evaluations, and collaborating with global teams to deliver top-quality AI training datasets.

Labeling Experience

Master - French Language Specialist – AI Trainer | Invisible Technologies

OtherTextText SummarizationTranslation Localization

- Designed prompts based on technical guidelines with various complexity levels. - Evaluated and ranked responses on various technical domains - Chatbot conversation analysis, output editing

- Designed prompts based on technical guidelines with various complexity levels. - Evaluated and ranked responses on various technical domains - Chatbot conversation analysis, output editing

2025

Master - French Language Specialist – AI Trainer | Invisible Technologies

OtherAudioQuestion AnsweringEmotion Recognition

- Audio recording analysis for register, tone, language fluency - Audio recording creation semi-scripted with specific register and tone based on scenario - Peer-review and QA

- Audio recording analysis for register, tone, language fluency - Audio recording creation semi-scripted with specific register and tone based on scenario - Peer-review and QA

2025

AI Agent Assistant - Generalist

MindriftTextEvaluation RatingPrompt Response Writing SFT

Comparison of responses to the same prompt in various chatbots and models, evaluation and ranking of responses

Comparison of responses to the same prompt in various chatbots and models, evaluation and ranking of responses

2025

AI Trainer | Prompt Engineer - French

Data Annotation TechImageRLHFFine Tuning

Based on images: OCR, prompt engineering, red-teaming, image differences comparison, rubric and criteria creation and evaluation, etc

Based on images: OCR, prompt engineering, red-teaming, image differences comparison, rubric and criteria creation and evaluation, etc

2025

AI Trainer | Prompt Engineer - French

Data Annotation TechTextTranslation LocalizationRLHF

Multiple projects with increasing level of complexity. Red-teaming, model failure triggering, jailbreaking, rubrics and criteria creation, evaluation, tagging, ranking, peer-review, QA, prompt engineering, output editing, golden response writing, etc

Multiple projects with increasing level of complexity. Red-teaming, model failure triggering, jailbreaking, rubrics and criteria creation, evaluation, tagging, ranking, peer-review, QA, prompt engineering, output editing, golden response writing, etc

2025

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Education

Work History