Ovidiu Sas
Director at SIP Router Project
Old Toronto, Ontario, Canada
Summary
🤩
Rockstar🎓
Top SchoolOvidiu Sas is a seasoned VoIP architect and developer with over two decades of experience designing and implementing SIP-based communication systems, currently directing VoIPEmbedded Inc. He has been an active contributor to major open-source SIP projects like Kamailio and OpenSIPS since the mid-2000s, improving core rate-limiting, dialog management, and traffic-shaping modules used in large-scale deployments. His expertise spans SIP, RTP/RTCP, T.38, Radius, rtpproxy NAT traversal, Asterisk on embedded systems, and legacy SS7 protocols, giving him rare end-to-end visibility from SS7 signaling to modern IP real-time media. He combines hands-on backend development with consultancy and training, helping operators build resilient, high-performance VoIP networks. Based in Toronto, he brings practical performance and debugging improvements to widely used SIP servers, reflecting deep familiarity with both protocol internals and production constraints.
19 years of coding experience
9 years of employment as a software developer
Universitatea „Politehnica” din Timișoara
French, Romanian, English
Github Skills (16)
c1710
debugging10
opensips10
debug10
sips10
sipjs10
c1110
c-programming10
sipp10
sip10
rate-limiting9
error-handling9
database-management8
telephony8
voip8
Programming languages (5)
Github contributions (5)
kamailio/kamailio
Jan 2008 - Apr 2022
Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms -
Role in this project:
Back-end Developer
Back-end DeveloperContributions:576 commits, 5 PRs, 139 pushes in 14 years 5 months
Contributions summary:Ovidiu contributed to the Kamailio SIP server by addressing warnings and errors within the code, focusing on the rate limiting and dialog management modules. The commits involved fixing compiler warnings, enhancing error logs for better debugging, and implementing performance improvements like registering a separate timer process. Their work touched upon core functionalities of the system, indicating an understanding of the server's architecture.
voltesip-serverkamailiofreeswitchchat
OpenSIPS/opensips
Jan 2008 - Jun 2022
OpenSIPS is a GPL implementation of a multi-functionality SIP Server that targets to deliver a high-level technical solution (performance, security and quality) to be used in professional SIP server platforms.
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 reviews, 916 commits, 14 PRs in 14 years 7 months
Contributions summary:Ovidiu primarily worked on the OpenSIPS SIP server, focusing on the "ratelimit" module. Their contributions involved implementing new features and fixing existing warnings within the module, which indicates a focus on server-side logic. The user was responsible for setting up the database and writing the code related to the traffic shaping.
professionalsip-servergplsecurityhigh-level
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