Jean-François Baffier is a research scientist at Internet Initiative Japan, a leading internet provider, where he primarily focuses on optimization for networks. Previously, he was an academic researcher at the Graduate School of Information Science and Technology of The University of Tokyo. Jean-François continues to contribute to the academic and scientific community through his specialized research, as well as through the development of open-source libraries and software aimed at making constraint programming and optimization accessible to non-specialists.

His current research initiatives encompass the optimization of network infrastructures, with a particular emphasis on modeling of failures and routing. He also retains an interest in the analysis of information networks, smart compression algorithms for high scalability of data structures, and Explainable Artificial Intelligence. Additional areas of research include Game Analysis and AI for Games.

In terms of software development, Jean-François is the creator of the StaticWebPages.jl package, which enables the generation of websites using a simplified content file. He remains an active member of the Humans of Julia's Discord server, where he continues to contribute to the Modern Academics project.

Compressed Stack Flow of Knowledge


  • 2021 current


    IIJ Innovation Institute Inc. ─ Dynamic Optimization

  • 2021

    Assistant Professor

    The University of Tokyo, Graduate School of Information Science and Technology, Department of Computer Science

  • 2020


    Data Science and Optimization

  • 2019 2021

    Postdoctoral Researcher

    RIKEN Center for Advanced Intelligence (AIP)

  • 2017 2019

    International Research Fellow

    Japan Society for the Promotion of Science (hosted at the Tokyo Institute of Technology)

  • 2015 2017

    Postdoctoral Researcher

    National Institute of Informatics (JST-ERATO Kawarabayashi Large Graph Project)

  • 2012 2014

    Teaching Assistant

    The University of Tokyo

  • 2009 2010

    Mathematics Teacher

    Junior High-School (French Ministry of Education)


  • Ph.D. 2015

    Ph.D. of Information Science

    The University of Tokyo

  • M.Sc. 2011

    Master of Science (Informatics)

    Paris-Sud University

  • 2008 2009

    Visiting Master Student

    Paris-Diderot University

  • B.Sc. 2007

    Bachelor of Informatics-Mathematics

    Paris-Sud University

  • 2003 2005

    Higher School Preparatory Classes (Sciences)

    École nationale de chimie physique et biologie de Paris (ENCPB)

  • Bac. 2003

    Baccalauréat of Science

    Lycée Louis-le-Grand