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Raphael Cousin

Data Scientist

Can work in or around Paris, Paris 6e Arrondissement, Bordeaux

  • 48.85661400000001
  • 2.3522219000000177
  • Suggested rate 800 € / day
  • Experience 2-7 years
  • Response rate 100%
  • Response time A few days
Propose a project The project will begin once you accept Raphael's quote.

This freelancer will be available again on 31/10/2023

Until 31/10/2023

Propose a project The project will begin once you accept Raphael's quote.

Location and workplace preferences

Paris, France
Can work onsite in your office in
  • around Paris and 50km
  • Around Paris 6e Arrondissement and 100km
  • Around Bordeaux and 100km


Freelancer code of conduct signed
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Verified email



  • French

    Native or bilingual

  • Spanish

    Native or bilingual

  • English



Skills (21)

Raphael in a few words

Mathematician and developer, focus on Big Data management (Hadoop Ecosystem, AWS, GCP), reinforcement learning (Openai, DeepMind) and generative models (GAN). Throughout my academic studies I have acquired theoretical background in analysis, statistics and algorithmics. Graduated from School 42, I have developed skills in IT and software development. Eager to work with motivated and talented teams, in order to build innovative and sustainable AI solutions. I stay open to opportunities and new challenges.
Feel free to contact me!


Veepee - Veepee


Data Scientist

Paris, France

May 2019 - November 2019 (6 months)

Worked on the home page recommender system.
• Built environments to simulate the user/home page interactions and to replay the historical data
• Developed deep learning algorithms, with focus on reinforcement and Bayesian learning
• Computed benchmarks, according to the product constraints (delay reward, position bias, continuous and binary rewards)
• Deployed cloud (GCP) pipeline using managed tools for storage (Bigquery), preprocessing (Apache-Beam / Dataflow), training/serving (tensorflow_gpu / AI Platform)
• Participated paper lecture and research team activities

Phoenix research station


Software Engineer

Elx, Espagne

June 2018 - November 2018 (5 months)

Developed tools for palm trees detection using machine learning and high-resolution multispectral satellite imagery.
• Acquired and managed the data
• Implemented computer vision solutions (CNN, sliding window, non maximum suppression)
• Experimented at large scale (100 km 2 )
• Visualization and interaction with results (GIS dashboard)
• Presented at FAO/CIHEAM international meeting, Bari (Italy)



CTO - Data Scientist

Paris, France

June 2017 - January 2018 (7 months)

Poleon : Real time predictions on transportation demand.

Led the design, the development and the maintenance of a software as a service which provided real time predictions to mobility stakeholders.
As data scientist, I managed the five million data collected every day from public and private sources. Including road traffic, Facebook events, meteorology, pollution, RATP, SNCF, Vélib.
Focused on:
• Databases structuring
• Data denoising
• Data engineering
• Predict inflow and demand
• Distribution, visualization and KPI for customers



Software Developer Intern

Paris, France

May 2016 - August 2016 (3 months)

Developed a prototype for multidimensional data visualization software.
• Automatic generation of pdf reports with interactive visualization (2D, 3D, graphs, shapes, histograms, pie charts)
• Regression methods and detection of outliers
• User interface: display / unveil dimensions, sort visualizations by model / relevance

2 projects on Malt

(2 ratings)

Jean-Marc - fluctuo


Raphael a été très efficace et très investi tout au long de cette mission dans un contexte pourtant pas facile (données complexes, intégration en production, temps limité). Jusqu'au dernier moment, il a effectué tous les ajustements demandés pour que le livrable corresponde exactement à nos besoins, et a pris soin de faire en sorte que ce livrable soit facile à prendre en main et à maintenir par notre équipe après son départ. Le tout avec le sourire et dans la bonne humeur! Je recommande vivement Raphael!

Martin Hammerchmidt - Poleon


I collaborated with Raphael for 4 months. It was intense work days, punctuated with laughter, smiles and enjoyment! A former student of College 42 armed with a strong technological and scientific culture, he always provided relevant critical insight for our technological choices. We were working on a large database aggregating flows of various types. With his great skills in data-science, Raphael developed tools allowing to integrate new sources of data within minutes. He also built an robust infrastructure to automate the data pre-processing, the training of models and the predictions delivery. All in all, he learns fast, he has great flexibility, I can only recommend Raphael!