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I am

Sébastien

Dieu

About

I am Belgian, based in France, and I have spent eleven years working exactly where design meets code. Trained in graphic design with a computer engineering specialisation (top of my class twice), I spent seven years as a fullstack engineer then lead on Mon Espace Santé, the French national health platform used by 26 million citizens.

Before that, games: art direction at Eugen Systems, the complete Talisman icon system for Iron Maiden: Legacy of the Beast, QA and localisation testing at Aeria Games and Navigator. I also founded and ran an MSI-sponsored esports organisation where I did absolutely everything, from the logo to the website back end.

That zigzag is now the point. I am the single contractor who designs the interface, implements it, writes the tests, and proofreads the French and Japanese localisation before it ships. I am studying for the JLPT and moving to Japan in 2026, drawn by a culture of detail that matches how I work.

They trusted me

  • Atos
  • CHCvia Atos
  • Translinkvia Atos
  • Eaux de Bordeauxvia Atos
  • Eugen Systems
  • Navigator LTD
  • MSI
  • Aeria Games
  • ECO PC

Working languages

  • FrenchNative
  • EnglishFluent, professional context
  • JapaneseFluent, professional context

Education

  • 2026

    Columbia+ University of New York

    Prompt Engineering and AI programming certification

  • 2025

    Columbia+ University of New York

    AI, Machine Learning and Deep Learning certification (Python)

  • 2012 – 2016

    Condorcet Saint-Ghislain, BelgiqueTop of class

    Bachelor in graphic design, computer engineering specialisation

  • 2009 – 2012

    IPCD Binche, BelgiqueTop of class

    Diploma in graphic design, computer engineering option

  • 2016 – 2017

    Maison du Design

    UI/UX certification

  • 2017

    Cisco cybersecurity certification

  • 2017

    Python, Frontend, AWS and Microsoft Azure