Julien Grave is a systems engineer with 12 years of international experience building and validating complex, high-technology products across aerospace and automotive simulation domains. Based in Stuttgart and authorized to work in the United States, he combines hands-on system engineering, capacity planning at Apple, and consultancy leadership developing the RoadRunner CAV simulation tool at Argonne. He has driven product architecture and MBSE adoption at Thales, improved validation processes through automation, and led multidisciplinary teams from concept studies to flight‑grade designs. Julien also contributes to open-source tooling for measurement data (asammdf), focusing on low-level performance and correctness fixes that improve large-file handling and duplicated-signal resolution. A former lecturer and military warrant officer, he brings clear facilitation skills and disciplined project delivery to cross-functional stakeholders.
11 years of coding experience
6 years of employment as a software developer
Multidisciplinary master of science degree and Diplôme de l'Ecole Polytechnique, Pure and applied Mathematics, Physics, Mechanics, Economics, Leadership training, Multidisciplinary master of science degree and Diplôme de l'Ecole Polytechnique, Pure and applied Mathematics, Physics, Mechanics, Economics, Leadership training at École Polytechnique
Physics and Engineering Science, Physics and Engineering Science at Lycée Sainte-Geneviève
High school with High Honors, BAC S : scientific fields, High school with High Honors, BAC S : scientific fields at Notre Dame Les Oiseaux
Master of Science - Aerospace Engineering, Aerospace, Aeronautical and Astronautical/Space Engineering, Master of Science - Aerospace Engineering, Aerospace, Aeronautical and Astronautical/Space Engineering at ISAE-SUPAERO
Fast Python reader and editor for ASAM MDF / MF4 (Measurement Data Format) files
Role in this project:
Back-end Developer
Contributions:19 reviews, 155 commits, 63 PRs in 4 years 8 months
Contributions summary:Julien primarily focused on fixing and optimizing the `asammdf/mdf4.py` file. Their contributions include addressing recursion errors, improving performance by using `ch_cntr` instead of `len()`, fixing an assignment issue, and resolving problems with appending and handling of duplicated signals within data groups. The user's work centered on enhancing the accuracy and efficiency of the ASAM MDF / MF4 file reader and editor.
Contributions:2 releases, 55 commits, 5 PRs in 2 years 8 months
ragnarok-onlineemulatorgatesagaserver-emulator
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Julien Grave - System Engineer at Sterling Engineering