Julien KHAMPHOUSONE

Paris - Île-de-France, julien.khamphousone AT ensiie.fr

I am a contractual associate professor in combinatorial optimization at ENSIIE since the 1st of December 2025. I graduated from ENSIIE and MPRO in 2019. I hold a PhD in operations research from University Paris Dauphine and my supervisors were Pr. André Rossi, Dr. Sonia Toubaline and Dr. Fabian Castaño. I served one year as a post-doctoral researcher at Orange ending in 2024.

Publications

International Journals
  1. J. Khamphousone, F. Castaño, A. Rossi, S. Toubaline, (2025), A Resilient Variant of the Ring Star Problem. Networks, 86: 199-219. https://doi.org/10.1002/net.22285
  2. J. Khamphousone, F. Castaño, A. Rossi, S. Toubaline, A survivable variant of the ring star problem, Networks. 83 (2024), 324–347. https://doi.org/10.1002/net.22193
International Conferences
  1. J. Khamphousone, F. A. Castaño Giraldo, A. Rossi, and S. Toubaline. “A robsut variant of the Ring Star Problem”. In: 10th International Network Optimization Conference (INOC). June 2022. url: http://dx.doi.org/10.48786/inoc.2022.05
National Conferences
  1. J. Khamphousone, M. Bouhtou, M. Chardy, and C. Richer. “ILP for optimal multi-battery management systems on SPOT and curtailment electricity markets with large temporal horizon”. In: ROADEF 2025. École nationale des ponts et chaussées. Champs-sur-Marne, France, Feb. 2025.
  2. J. Khamphousone, F. A. Castaño Giraldo, A. Rossi, and S. Toubaline. “Resilient and Survivable Ring Star Problems”. In: 24e congrès annuel de la ROADEF. ROADEF. Rennes, France, Feb. 2023.
  3. J. Khamphousone, F. A. Castaño Giraldo, A. Rossi, and S. Toubaline. “A robust variant of the Ring Star Problem”. In: 23e congrès annuel de la ROADEF. INSA Lyon. Villeurbanne - Lyon, France, Feb. 2022.
  4. J. Khamphousone, F. A. Castano Giraldo, A. Rossi, and S. Toubaline. “Introducing the Resilient Ring Star Problem”. In: 22e congrès annuel de la ROADEF. Mulhouse, France, Apr. 2021.
  5. M. Diamantini, A. Faye, and J. Khamphousone. “Calcul des dates d’atterrissage d’une séquence d’avions pour des fonctions de coût convexes et affines par morceaux”. In: 19e congrès annuel de la ROADEF. Le Havre, France, Feb. 2019
PhD manuscript

Experience

Contractual Associate Professor

ENSIIE, Evry
December 2025 - Today

Postdoctoral Researcher

Orange — Orange Gardens, Châtillon

Operations Research, Corporate Social Responsibility

Analysis and Optimization of Multi-Battery Management in Telecommunications Networks within Retail and Curtailment Electricity Markets

Novembre 2023 - Novembre 2024

C/C++ Engineer

Scalian

January 2020 - May 2020

Research Engineer Intern

Dassault Systèmes — R&D Laboratory

Operations Research — Multicriteria Decision Aiding

Sate of the Art and creating new sorting models dealing with uncertainty and applied to project portfolio selection. Models validating and testing in Julia, C++ and CPLEX.

April 2019 - October 2019

Research Intern

ENSTA-Paris — Applied Mathematics Laboratory

Computer Science and Operations Research — Aircraft Landing Problem

Implanting and formulating a polynomial dynamic algorithm in Julia on Aircraft Landing Problem that integrates convex and piecewise linear functions

Prestend on ROADEF 2019 Congress - Le Havre

June 2018 - September 2018

Developpment Intern

CNRS - LIMSI

Computer Science — Creation of an online Dictionary of French regional langage Picard

Scala - HTML PHP CSS JavaScript - RDF XML SPARQL

June 2017 - September 2017

Education

Université Paris Dauphine

Doctor of Philosophy
October 2020 - November 2023

ENSIIE

French Engineering School in Applied Mathematics and Computer Science
Master Parisien de Recherche Opérationnelle

French Master of Science in the field of Operations Research awarded with honours

Bachelor's Degree of Applied Mathematics and Computer Science

Double degree awarded with higest honours

September 2016 - November 2019

Higher School Preparatory Classes

Paul Valéry — Paris 12e

MP - MPSI

September 2014 - August 2016

Computer Science Skills

Expertize
  • Julia-Lang
  • Julia-Lang
  • LaTeX
Good knowledges
  • Python
  • C, C++
  • R, RStudio
  • MATLAB
  • Unix, Shell
  • Tux
  • Web : HTML, CSS, JS, PHP
  • RDF
  • Databases : SPARQL, SQL

Teaching

3rd year Bachelor's Degree - Organization Sciences

Scientific Management and Decision Aiding
Graph Theory, Shortest paths, Flows
Linear Programming
Decision Aiding theory
September 2020 - June 2023

1st year Bachelor's Degree - Applied Mathematics and Computer Science

Web programming
HTML, CSS, PHP
September 2020 - June 2023

Interests

Apart from being an associate professor, I enjoy most of my time with my friends and family, practicing sports, playing videogames or boardgames and listening to music. I'm also found of my cat as well!

My cat Kiwi