Sylvain Berfini
Lead Software Developer & Manager at Belledonne Communications
Grenoble, Auvergne-Rhône-Alpes, France
Summary
🤩
Rockstar🎓
Top SchoolSylvain Berfini is a lead software developer and manager based in Grenoble with 14 years of experience specializing in mobile, interfaces, and ergonomics. He has a decade of Android expertise (Java and Kotlin), solid native C/C++ skills, and four years working with embedded Python on Raspberry Pi and MQTT-based networks. At Belledonne Communications he leads Android and cross-platform app efforts for a VoIP product, contributing to high-profile open-source projects like Linphone (UI improvements and core back-end features such as push notifications and chat). He combines hands-on engineering with people management, product ownership, and a practical eye for UX, having also designed and built escape-game rooms that blended software, electronics, and player experience. Fluent in English and Spanish, he pairs academic training from Grenoble and Madrid with a track record of shipping robust, user-centered communication software.
14 years of coding experience
Master 2, Génie Informatique, Master 2, Génie Informatique at Université Joseph Fourier (Grenoble I)Master 1, Ingénierie du Software, Master 1, Ingénierie du Software at Universidad Rey Juan Carlos
Spanish, English
Stackoverflow
478reputation
11kreached
29answers
3questions
Github Skills (30)
kotlin10
c-language10
mobile-development10
apidoc10
user-interface10
android-development10
java10
sip10
sips10
api10
android10
cprogramming-language10
sipp10
native-android10
authentication9
Programming languages (12)
Github contributions (5)
BelledonneCommunications/linphone-android
Aug 2012 - Jan 2023
Linphone.org mirror for linphone-android (https://gitlab.linphone.org/BC/public/linphone-android)
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:1 release, 4157 commits, 19 PRs in 10 years 7 months
Contributions summary:Sylvain primarily contributed to the development and maintenance of the Linphone-android application, focusing on its UI and user experience. They implemented features such as replacing PNG images with shapes and adding a screenshot button to the call interface. Additionally, the user addressed bugs and improved the interface by fixing issues like chat bubble margins and by enabling the selection of video and audio file formats.
phoneliblinphoneandroidgitlabsip
BelledonneCommunications/liblinphone
Feb 2013 - Jan 2023
Linphone.org mirror for liblinphone (git://git.linphone.org/liblinphone.git)
Role in this project:Back-end Developer
Back-end DeveloperContributions:1582 commits, 3 PRs, 82 comments in 9 years 11 months
Contributions summary:Sylvain primarily worked on back-end aspects of the project, making changes to core API files, improving code, and debugging. Their contributions focused on implementing features such as push notifications, adding and removing functionalities like group chat options. The user demonstrated proficiency in the core technologies used in this repository, particularly in the areas of authentication and security, and chat features.
liblinphonefreeswitchlinuxvoip
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