Teaching
Teaching is a broad thing. Besides attending various classes and fulfilling administrative duties, I also supervise students' Master theses, and tutor them in their internships and apprenticeships.
I eagerly share my fondness for learning and the scientific method, to my students and the rest of the world.
I very much enjoy the teaching model entitled "the unknowing teacher" (Le Maître Ignorant).
Courses
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Societal & Environmental Issues – Master 2 – Univ Lille – since 2023-24.
- 2025-26 – Class #4: Energy & Matter in a consumer society (fr)
- 2025-26 – Class #6: Scenario-based prospective analysis (en)
- 2024-25 – Class #3: Energy (fr)
- 2024-25 – Class #5: Digital usage dynamics (fr)
- 2024-25 – Class #6: Ecoconception (fr)
- Advanced distributed systems (SRA2) – Master 2 – Univ Lille – since 2021-22.
- Distributed systems (SR1 & SR2) – Master 1 – Univ Lille – since 2021-22.
- Computer networks (RSX1) – License 3 – Univ Lille – since 2022-23.
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Building a web server (UE PE web) – License 1 – Univ Lille – since 2023-24.
- Course's official website (fr) (contains the course material and exercises)
- Permalink to the course material (fr) (June 2024)
Past courses
- Introduction to Innovation & Research (IIR) – Master 1 – Univ Lille – 2024-25.
- School Programs & Live Questions (PSQV) – License 3 – Univ Lille – 2024-25.
- Software engineering (GL) – License 3 – Univ Lille – from 2022-23 to 2023-34.
- Programming – License 1 – Univ Lille – 2022-23.
- Computer networks – 2nd prep-school year – IMT Atlantique – 2021-22.
Research
I like to see everything through the lens of distributed systems: digital infrastructures & services, human societies (including legal, economic and social interactions), planet Earth and its ecology...
Since 2020, I am part of the Spirals team (Inria, CRIStAL, Lille) which studies the adaptability of distributed systems, and is led by Lionel Seinturier.
I spent my PhD (2016-19) in the WIDE team (Irisa, Rennes), which I consider top-notch on the research topic of distributed systems & algorithms.
I have a keen interest in studying the environmental footprint of the digital sector: this involves understanding its global production/usage/waste chain, its relation to other economic sectors (notably the energy transitions), and its human & ecological impacts (notably related to extractivism).
I finally keep a close eye on the state of the right to privacy in Information and Communication Technology (ICT), its abuses, and technical and regulatory counter-measures.
This implies scrutinizing platforms that are used by the public at large, e.g. the Android & iOS operating systems, and the web.
Recent events
- 2026/06 – Presenting our paper "Can you install this app? at ICT4S'26 in Bern.
- 2025/12 – Organization of the INFRASTRUCTURE workshop.
- 2025/09 – With Cathy Truffert, we have published a paper to The Conversation (French edition): ➡️ L’appétit insoutenable de nos sociétés en métaux, et comment lui survivre
Currently studied topics
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Categorizing and modelling the multi-faceted environmental impacts of the digital sector and its interplay with the energy transitions, notably through the lens of mineral extraction.
- Funding: project CARECloud (part of PEPR Cloud).
- Collaborators: Samuel Dubuisson (PhD student), Sophie Cerf (co-supervisor), Humberto Brea-Solis (co-supervisor), Clément Quinton (co-supervisor), Romain Rouvoy (co-supervisor), Olivier Vidal (advisor) and Catherine Truffert (advisor).
- Alumni: Arthur Goarant (PhD student), Thibault Simon (PhD student).
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How do decisions regarding the software development of mobile apps influence the obsolescence of smartphones?
- Funding: ObsoMobile PRC ANR.
- Collaborators: Manel Boumansour (intern), Lucas Deloison (apprentice), Gaëlle Fret (PhD student), Aurélien Tabard (co-supervisor), Romain Rouvoy (co-supervisor), Edlira Nano (advisor) and Limites Numériques (research collective).
- Alumni: Mohamed Zidani (student project).
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Making digital serices more decentralised and collaborative, by leveraging device-to-device communication, information storage at the edge, and environment sensing.
- Collaborators: Rémy Raes (PhD student), Daniel Romero Acero (research engineer), Romain Rouvoy (co-supervisor), and my former colleagues from the WIDE team: François Taïani (co-supervisor) and Davide Frey (co-supervisor).
- Alumni: Eliot Shaw (student project), Clarice Goulet (student project).
Activism
I partake in the CHATONS collective: a federation of a small hundred of French-speaking ethical web-hosting providers.
From 2020-2025, I used to be an administrator of Deuxfleurs, a CHATONS, which hosts this website.
In Lille, I am part of Chtinux: is a constellation of collectives from Hauts-de-France on a mission to promote digital freedoms (through a lot of install parties, notably).
You can physically find me at most events in Chtinux's agenda, notably at the get-together on digital freedoms, every last Tuesday of the month, at 8PM in the Café Citoyen, Lille.
Publications
Presentations
- 2026/05/25 – Entretien sur le coût du numérique (fr) – 🎙️ Radio interview at Provisoire FM, Arras.
- 2025/12/02 – Trajectoires environnementales du numérique (fr) – Présentation aux classes préparatoire du lycée Baggio, Lille.
- 2025/11/25 – Trajectoires environnementales du numérique (fr) – Présentation au lycée Raymond Queneau, Villeneuve-d'Ascq.
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2025/06/19 – Eschewing the Cloud by leveraging Local Communication Channels – DAIS conference, Lille.
Also see the paper and the survey's website and results. - 2025/05/15 – Trajectoires environnementales du numérique (fr) – Présentation au lycée Faidherbe, Lille.
- 2025/03/31 – La sobriété : nouvelle priorité de la recherche informatique (fr) –Séminaire « Axe Énergie », laboratoire CRIStAL, Univ Lille.
- 2025/03/26 – La sobriété numérique d'après l'hébergeur militant Deuxfleurs (fr) – Green Days Conference (Rennes).
- 2025/03/24 – Matérialité du numérique (fr) – Semaine des transitions, Univ Lille.
- 2025/02/08 – Trajectoires environnementales du numérique (fr) – AI Action Summit, Lille.
- 2024/11/21 – Les grandes questions d’un hébergeur numérique communautaire et convivial (fr) – Séminaire Politiques Environnementales du Numérique – Centre Informatique et Société, CNRS.
- 2024/10/08 – The material cost of the digital sector and how to constrain it – 30min of Science, Inria Lille.
"The digital sector in troubled waters" exhibition

For the 2024 edition of "La Fête de la Science", which theme was "Water in all of its states", Inria Lille proposed an exhibition entitled "Le numérique en eaux troubles", which was first displayed at the Forum des Sciences (Villeneuve-d'Ascq) in Oct-Nov 2024.
Aurélien Tabard and I were the lead scientists on the project, Sophie Blitman was our journalist editor, while the Communication team of Inria took care of the rest (props to Magda Guennadi, Julia Plaia, Antoine Cappelle & Anaïs Kolumban).
- Check out the teaser video!
- Download the exhibition panels ("small" 68MB version, full-quality served on demand).