I'm Thomas Zwetyenga

Data Scientist | Machine Learning Engineer | Applied AI, Optimization & MLOps

I'm a French Data Scientist and Engineer based in Japan, with 8 years of experience turning ideas into practical solutions.

Combining expertise in data science and software engineering, I develop end-to-end AI and machine learning systems, from data collection and processing to model development, training, and production deployment.

My experience spans predictive modeling, optimization, Natural Language Processing (NLP), computer vision, and generative AI. I've worked on projects ranging from traffic prediction and large-scale scheduling optimization to energy efficiency and customer feedback analysis, helping businesses solve complex problems and make better decisions.

Able to communicate in English, French, and Japanese, I collaborate directly with clients and engineering teams to turn business needs into effective technical solutions.

Personal Projects

  • Coming soon...

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    • SageMaker
    • SQL
    View project

Professional Experience

  1. Aug 2022 — Present

    Data Scientist

    GRID INC. · Tokyo, Japan

    • Railway Scheduling Optimization: Developed optimization algorithms and visualization tools to automate maintenance-vehicle scheduling for railway tunnel renovation.
    • Traffic Congestion Prediction: Developed and deployed machine learning models and automated pipelines for traffic congestion prediction.
    • HVAC Cost Optimization: Developed predictive models to improve building operations, reduce energy costs, and lower CO₂ emissions.
    • LLM-Assisted Rail Measurement Validation: Developed an LLM-based solution to improve automated measurement validation and provide explainable results.
    • Maritime Transportation Planning: Developed vessel routing and assignment algorithms to automate maritime transportation planning.

  2. May 2020 — Jul 2022

    Data Scientist

    LTS · Tokyo, Japan

    • Natural Language Processing: Independently developed a multilingual NLP system to analyze customer feedback, identify topics, and classify sentiment.
    • Object Detection: Developed a computer vision solution to detect road cracks from vehicle-mounted camera footage.
    • Stock Market Prediction: Developed machine learning models to forecast stock market trends for a major Japanese trading company.

  3. Apr 2019 — Apr 2020

    Data Scientist

    Human Resocia · Tokyo, Japan

    • Contributed to the development and field integration of NTT COMWARE's Deeptector computer-vision platform, including a vehicle-based object-detection application combining camera footage with GPS data.

  4. May 2018 — Aug 2018

    Full Stack Developer and Data Analyst Intern

    H.I.S. · Tokyo, Japan

    • Contributed to the development of a platform connecting international travelers with local guides in Japan, developing front-end and back-end features, designing and maintaining the user database, and analyzing user data.

Education

  1. 2014 — 2019

    Master of Engineering

    Efrei · Paris, France

    Major: Business Intelligence and Big Data.

  2. 2018 — 2019

    Exchange Program

    Nagoya Institute of Technology · Nagoya, Japan

    AI research project: predicting protein allergenicity from amino-acid patterns.

Contact Me