François Le Lay
Machine Learning Engineer at Reflexivity
Town of Brookhaven, New York, United States
Summary
👤
Senior🎓
Top SchoolFrançois Le Lay is a Machine Learning Engineer with two decades of hands-on experience building mission-critical data platforms and predictive systems, and 12 years focused in production ML and data engineering roles. He operates at the intersection of generative AI, data science, product design and data engineering, currently applying agentic automation to financial analysis at Reflexivity. His background spans algorithmic trading, real-time contextual recommender systems, retrieval-augmented generation, and recent work on GenAI for 2D/3D creation and sound synthesis, reflecting a rare blend of quantitative finance and creative AI. François has led engineering and data teams at Spotify, Hugging Face, and The Farmer’s Dog, and shaped field engineering and integrations for data observability at Kensu. He is comfortable across the stack—from ETL, Spark/Databricks and Snowflake to LLM architectures and serverless inference—and he often translates customer needs into product roadmaps. Based in Brookhaven, NY, he pairs deep statistical training with a track record of shipping production systems that augment expert workflows rather than replace them.
12 years of coding experience
21 years of employment as a software developer
MS Artificial Intelligence, MS Artificial Intelligence at Université de Rennes IMS - Statistical Engineering Diploma Statistics and Information Systems, MS - Statistical Engineering Diploma Statistics and Information Systems at ENSAIBS Applied Mathematics, BS Applied Mathematics at Pierre and Marie Curie UniversityAS Physics Mathematics Computer Sciences Earth Sciences, AS Physics Mathematics Computer Sciences Earth Sciences at La Rochelle Université
English, French, Spanish, Italian
Stackoverflow
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0reached
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Github Skills (131)
gradient-descent10
python10
numerics10
deep-learning10
root-finding10
numba10
fundamental10
interpolation10
blas10
tensorflow10
lapack10
mpi10
machine-learning10
ndarray10
convolution10
Programming languages (7)
Github contributions (5)
lelayf/spotify-tensorflow
Nov 2017 - Apr 2019
Provide Spotify specific TensorFlow helpers
Contributions:2 PRs, 8 pushes, 2 branches in 1 year 4 months
spotify-apihelpersspotifytensorflow
lelayf/lelayf
Oct 2022 - Jun 2024
Contributions:4 pushes, 1 branch in 1 year 8 months
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