
Applied Behavioral Scientist · AI Research Engineer
Thomas
Le Bras
Cognitive Science PhD specialized in behavioral research and applied AI for product decisions. I own research and AI systems end to end, from experimental design and data analysis to production deployment and actionable insight delivery.
Experience
Jan 2025 — present
Research Engineer · AI R&D
AB TastyApplied behavioral research and AI systems for high-traffic digital products.
- Led applied research from experimental protocol to actionable insight delivery.
- Built behavioral scoring systems operating at the scale of millions of users.
- Translated complex findings into product, UX and commercial decisions with product and leadership teams.
Mar 2021 — Sep 2024
Research Engineer · PhD Research Scientist
Dotaki / AB Tasty · Psychology LabPhD research on personality, visual exploration and user interactions.
- Led large-scale quantitative research on attention and decision-making using eye- and mouse-tracking data.
- Contributed to EmotionsAI, a real-time behavioral segmentation solution based on emotional needs and mouse-movement analysis.
- Developed behavioral metrics for applied Machine Learning systems and published in Scientific Reports, Nature Portfolio in 2024.
Sep 2019 — Dec 2020
UX Researcher · Data Science Intern
ContentSquare · Sublime Skinz · StimCo · Computational Neuroscience LabEarly work across user research, cognitive psychology and Deep Learning.
- Quantitative UX studies and data analysis applied to interfaces and digital campaigns.
- Eye-tracking and cognitive-psychology methods used to study visual attention.
- Convolutional neural networks for image classification in computational neuroscience.
Education
PhD in Cognitive Science
Université Paris Cité
MSc Cognitive Science
Grenoble INP
MSc Cognitive Psychology
Université Paris Cité
Selected projects
AttentionAI
Predictive visual-attention heatmaps for designers.
Computer Vision · TensorFlow · Vertex AICursorAI
Engagement prediction from mouse-movement dynamics.
Behavioral ML · XGBoost · Real timeSearchAI
Semantic and visual retrieval with multimodal embeddings.
CLIP · Vector Search · FastAPIDeepUX
Three UX dimensions scored from a single interface screenshot.
CNN · TensorFlow · FastAPICore skills
Behavioral research
Quantitative methods · Experimental design · Eye tracking · Mouse tracking · Insight synthesis
AI & Data
Applied ML · Deep Learning · Embeddings · Behavioral scoring · AI-assisted research workflows
Engineering
Python · FastAPI · PyTorch · TensorFlow · scikit-learn · Docker · GCP · ClickHouse
Product
Decision support · Quantitative UX · E-commerce · Search and recommendation
Music production · Philosophy · Entrepreneurship