Engineering leader with 20+ years of experience in open source, systems engineering, and
large-scale software delivery. Proven track record driving technical transformation and
innovation, scaling distributed teams, and delivering cross-platform products.
Combines deep technical expertise with people-focused leadership - building high-performing
teams and bringing out the best in each individual - across R&D, infrastructure,
communication and policy.
Currently auditor of the IHEDN National Session on Digital Sovereignty & Cybersecurity (2025-2026).
Experience
Mozilla
2014 - Present
Director of Engineering, Paris
Feb 2021 - Present
- Leads the OS Integration & Engineering Effectiveness organization (~50 people / 5 managers) for Firefox desktop and mobile, covering CI, release engineering & management, developer productivity, fuzzing, compilers, translations, PDF, and automation.
- In charge of AI for development across the engineering organization - defining the strategy and rolling out AI-assisted tooling and workflows for developers.
- Drives large-scale AI and ML integration across developer workflows and product systems - from AI-assisted code review to AI-powered local translation in the browser (including Android) - deploying ML-based defect classification, test scheduling optimization, and automated crash analysis to improve quality, reliability, and cost efficiency.
- Steered major modernization projects including the Mercurial→Git migration, CI cloud cost optimization (saving ~$1M/year), build system improvements, dashboards, Debian repository management, etc.
- Supported the bootstrap of the B2B initiative (Firefox Enterprise), collaborating on early strategy and execution.
- Spokesperson (press, radio, TV, YouTube, and Twitch).
- Policy work at EU and France levels (e.g. SREN, DMA, CRA, eIDAS, etc.).
European Leadership Team / General Manager of Mozilla France (in parallel)
Feb 2016 - Present
- Compliance with French regulations (Règlement intérieur, contracts, CP/RTT, PPV, etc.)
- Managing complex HR reorganizations, supporting and securing HR processes and compliance.
- HR - performance management, benefits (CET, meal vouchers, etc.)
- Finance (CIR), etc.
Senior Engineering Manager
May 2015 - Feb 2021
Managed the compiler, fuzzing and associated tools teams:
- Contributed to LLVM, Clang and Rust, leveraging PGO and LTO technologies to improve the performance of Mozilla's products.
- Static analysis, linting and code coverage as part of the development workflow.
- Fuzzing Firefox (DOM, JS, etc.), libraries and services to identify bugs and potential security issues.
- Cost saving and process optimization initiatives.
Firefox Release Manager
Jan 2014 - May 2015
- In charge of shipping 10 major releases of Firefox as an individual contributor.
- Introduced several process and tooling improvements.
Open Source Contributor
- Debian, LLVM and uutils (volunteer)
2006 - Present
- Debian - Debian Developer: Rust toolchain and packages maintenance, migration of the build system to Clang (instead of gcc), full rebuild of the Debian archive with clang using AWS, founder of the Debian Science team, Google Summer of Code 2011 administrator and mentor (10+ times), former treasurer of the French Debian Association, and Ubuntu contributor.
- LLVM - Debian and Ubuntu packaging of the LLVM toolchain (apt.llvm.org, ~100 TB/month of traffic), member of the release management team, Google Summer of Code mentor, and organizer of the EuroLLVM 2013 edition and meetups in Paris.
- Uutils - project lead of the Rust/coreutils effort to replace the C implementation; uutils coreutils is now the default coreutils in Ubuntu and is offered by Microsoft in Windows.
IRILL
- Community Manager, Paris
Sep 2010 - Jan 2014
- Organization of various events: EuroLLVM 2013, GNU Hackers Meeting, LibreOffice meeting, etc.
- Participation in the organization of FOSDEM (2012 & 2013), DebConf (2011 & 2012), etc.
- Construction of a full video setup for event recording.
- Recording, editing and publication of the videos of the previous events.
Scilab Enterprises
- Operations Manager & Board Member, Versailles
Dec 2011 - Dec 2013
- Porter and coordinator of the Richelieu project: JIT compilation in Scilab based on LLVM and VMKit (~€2M budget).
- R&D project manager (ANR, FUI, FP & ITEA): Oasis (coordinator), H4H, ManyCoreLabs and Similan.
- Definition of the Scilab 5 and 6 families roadmap.
- Management of various releases of Scilab.
- Management of commercial projects for ASTRIUM, CNES, SNECMA, BRGM, LEONI, etc.
- Quality assurance: code review, unit tests, code coverage, continuous integration, bug triage, workflow, etc.
- Developments in Scilab: C/C++, Java, Scilab, Python, Bash, etc.
INRIA / Scilab Consortium & Digiteo Foundation
- Project Manager & Developer, Versailles
Jun 2006 - Dec 2011
- Led engineering and research initiatives around Scilab, the open-source numerical computation software (open alternative to MATLAB). Maintained and developed Scilab for Linux, Unix, and macOS.
- Core developer of Scilab, responsible for Linux, Unix, and macOS versions and overall release quality.
- Managed R&D projects including Coll@viz, CSDL, OpenGPU, OASIS, H4H, SIMILAN, OpenHPC, and SCOS for INRIA and Digiteo.
- Contributed to the Scilab 5 & 6 roadmap definition.
- Oversaw the license transition from Scilab's proprietary model to CeCILL (GPL-compatible) and ensured open-source compliance.
- Acted as a technical project advisor on national and European initiatives (ANR, System@tic, FUI, FP, ITEA2).
- Google Summer of Code administrator and mentor (2009-2011).
Intrepid Geophysics
- Developer, Melbourne, Australia
Sep 2004 - Jun 2006
- Research and development in parallel and distributed systems using C/C++/Java.
- 3D modelling with the OpenCascade framework (C++/Java) for the software Geomodeller.
- Set up of the development environment for Geomodeller using OpenCascade and for Intrepid Geophysics software.
- Study and development of a client (C++) / server (PHP) using SOAP (gsoap/nusoap).
Education
Institut des hautes études de défense nationale (IHEDN)
- 5ème Session Nationale - Majeure Souveraineté Numérique et Cybersécurité (SNC 8)
2025 - 2026
Paris XII University
- Master of Science (MS), Distributed Systems
2003 - 2004
Languages
- French - Native
- English - Fluent
Interests
- DIY: woodworking, renovation, etc.
- Scuba diver: PADI Instructor (OWSI)
- Trekking, climbing, ski touring and mountaineering
- Mongol Rally 2009