Thomas Le Bras

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.

France · Remotethomaslebras@outlook.frthomaslebras.comlinkedin.com/in/thomaslebrasgithub.com/ThomasLbrs
100M+behavioral datapoints analyzed
5+Machine Learning POCs delivered
3ML products shipped
01

Experience

Jan 2025 — present

Research Engineer · AI R&D

AB Tasty

Applied 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.
PythonGoogle Cloud PlatformVertex AIDockerLLMsBehavioral scoring

Mar 2021 — Sep 2024

Research Engineer · PhD Research Scientist

Dotaki / AB Tasty · Psychology Lab

PhD 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.
PythonEye trackingMouse trackingMachine LearningPsychometricsExperimental design

Sep 2019 — Dec 2020

UX Researcher · Data Science Intern

ContentSquare · Sublime Skinz · StimCo · Computational Neuroscience Lab

Early 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.
PythonUX ResearchData ScienceEye trackingDeep LearningCNN
02

Education

2021 — 2024

PhD in Cognitive Science

Université Paris Cité

2020 — 2021

MSc Cognitive Science

Grenoble INP

2019 — 2020

MSc Cognitive Psychology

Université Paris Cité

03

Selected projects

AttentionAI

Predictive visual-attention heatmaps for designers.

Computer Vision · TensorFlow · Vertex AI

CursorAI

Engagement prediction from mouse-movement dynamics.

Behavioral ML · XGBoost · Real time

SearchAI

Semantic and visual retrieval with multimodal embeddings.

CLIP · Vector Search · FastAPI

DeepUX

Three UX dimensions scored from a single interface screenshot.

CNN · TensorFlow · FastAPI
04

Core 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

Interests

Music production · Philosophy · Entrepreneurship