Cédric Foellmi is an entrepreneurial software leader and former astrophysicist with 13 years of cross-disciplinary experience building high-performance teams and robust production software from legacy codebases. He has led major transformations—migrating on-prem datacenters to cloud, modernizing a 1.6M‑line codebase, and scaling engineering teams through acquisition by Applied Materials—while keeping continuous delivery and low turnover. Hands-on across mobile, front-end and cloud stacks, he contributes to open-source projects such as adapting the Siesta iOS REST client to macOS and enhancing Vue.js modal components. Comfortable at the intersection of research and product, he translates complex scientific problems into pragmatic engineering solutions and scalable architectures. Based in Grenoble, he combines international research pedigree (PhD in astrophysics) with founder-level pragmatism, often thriving in under-resourced, high-ambiguity turnarounds. An unusual strength is his ability to keep delivery cadence steady during radical team and tooling changes, ensuring customers never lose service while the organization rebuilds.
12 years of coding experience
18 years of employment as a software developer
Ph.D. Physics (Astrophysics), Ph.D. Physics (Astrophysics) at Université de Montréal
Msc Physics (Astrophysics), Msc Physics (Astrophysics) at University of Geneva
The civilized way to write REST API clients for iOS / macOS
Role in this project:
Mobile Developer (iOS)
Contributions:31 commits, 1 PR, 40 comments in 5 months
Contributions summary:Cédric primarily focused on adapting the Siesta library for the macOS platform, indicating a strong understanding of cross-platform development. They added an OSX target, addressing compiler errors by importing Foundation in various Swift files, and used compiler directives to handle platform-specific code, such as UI-related elements and memory management notifications. The commits also included type aliasing for images, essential for supporting both iOS and macOS.
Easy to use, highly customizable Vue.js modal library.
Role in this project:
Front-end Developer
Contributions:15 commits, 1 PR, 10 comments in 1 day
Contributions summary:Cédric primarily contributed to the Vue.js modal library by modifying the component's code. Their work focused on enhancing the modal's functionality by implementing features like dynamic width and height adjustments. The changes involved updating the validation rules for width and height, modifying component styling, and refactoring to methods. The user also made changes to the distribution files.
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Cédric Foellmi - Entrepreneur Indépendant at 4Pi Technologies