Cyril Leroux
CTO at happn
Greater Paris Metropolitan Region France
Summary
👤
Senior🎓
Top SchoolCyril Leroux is a seasoned CTO with 14+ years of hands-on engineering and leadership experience, known for turning sprawling orgs and legacy platforms into high-velocity, accountable teams. He excels at marrying technical rigor with people-first practices—rebuilding leadership layers, instituting competency matrices, and fostering psychological safety so engineers can own outcomes. At Happn he led a 33-person restructure, drove a migration to Kotlin and Go, cut infrastructure costs by 30%+, and built an enterprise AI governance program that compressed years of tech debt into months. Previously at Cheerz and Molotov TV he unified mobile teams with Kotlin Multiplatform, rebuilt core upload and tracking systems to save millions, and consistently raised product reliability metrics. Comfortable pitching technical vision to executives and investors, he blends strategic M&A experience with pragmatic engineering execution. Notably, his approach emphasizes measurable ROI and developer autonomy—creating systems and rituals that scale culture as well as code.
14 years of coding experience
16 years of employment as a software developer
Master en Informatique et Système d'Information Computer Engineering, Master en Informatique et Système d'Information Computer Engineering at SUPINFO
French, English
Stackoverflow
2,619reputation
449kreached
36answers
0questions
android
top-5%
speech-recognition
top-5%
return-value
top-5%
Github Skills (35)
udp10
encoder10
stream10
opus10
aac10
h2649
mpeg2-ts9
rtsp9
java9
amf9
kotlin9
rtmp9
g7119
h2659
android9
Programming languages (1)
Github contributions (5)
cyrillrx/URemote
Apr 2012 - Aug 2019
Contributions:328 commits, 22 pushes in 7 years 6 months
cyrillrx/android-logger
Nov 2015 - Nov 2024
Contributions:74 pushes, 2 branches in 9 years 2 months
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