Julien Chavanton
Founder - Software Engineer at Raven Technologies INC.
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolJulien Chavanton is a founder and software engineer with 11 years focused on real-time communications, currently leading Raven Technologies from Seattle. He brings deep VoIP and RTC expertise from senior roles at Subspace, Flowroute and Orange, and practical carrier-grade experience dating back to Atlas Telecom. Julien is an active open-source contributor to flagship telecom projects like FreeSWITCH and Kamailio, where his work on RTCP reporting and PostgreSQL-backed user location improved reliability and scalability. He blends low-level protocol mastery with product-facing leadership, having built WebRTC and adaptive codec solutions for consumer apps and wholesale telecom platforms. Known for diagnosing tricky deadlocks and optimizing DB update paths, he pairs hands-on systems engineering with entrepreneurial drive.
12 years of coding experience
22 years of employment as a software developer
diploma with honors computer and networking, diploma with honors computer and networking at Herzing Collegecertificate e-commerce, certificate e-commerce at HEC Montréal
English, French
Github Skills (15)
c1710
telephony10
sips10
postgresql10
kamailio10
c1110
rtcp10
voip10
rtp10
freeswitch10
sip10
database-design9
locks9
locking9
open-source8
Programming languages (4)
Github contributions (5)
kamailio/kamailio
Jan 2017 - Jun 2021
Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility, security and scalability
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 reviews, 86 commits, 88 PRs in 4 years 5 months
Contributions summary:Julien primarily focused on improving the Kamailio SIP server's backend functionality, addressing a deadlock issue in the `dmq_usrloc` module and implementing an `insert_update()` method with `DO UPDATE` for the PostgreSQL database module (`db_postgres`). Further enhancements included the addition of new parameters, such as the `db_load` and `db_insert_update`, within the `usrloc` module. Other notable changes included support for new features in the `db_postgres` module, such as the journal mode and pre-encoded prefix.
kamailiosecuritysipsip-servervoip
signalwire/freeswitch
Jul 2014 - Nov 2014
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device.
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 reviews, 8 commits, 5 PRs in 3 months
Contributions summary:Julien implemented and refined RTCP (Real-time Control Protocol) report generation within the FreeSWITCH codebase. Their commits include generating sender and receiver reports, setting up and initializing RTCP stats, and adjusting logging and formatting. These changes demonstrate a focus on improving the quality and reliability of the VoIP system's RTCP functionalities.
freeswitchhardwaremulticoreraspberry-pisignalwire
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