Lucian Balaceanu
Linux VoIP SW Engineer at 1&1 Internet Development SRL
Romania
Summary
🤩
Rockstar🎓
Top SchoolLucian Balaceanu is a Linux VoIP software engineer with 13 years of experience building and maintaining high-throughput SIP backends, currently focused on 1&1’s VoIP infrastructure. He specializes in C and Kamailio module development, having contributed notable improvements to the widely used Kamailio SIP server (carrierroute logic and stability fixes) and to Sipwise’s rtpengine metrics and monitoring. His background spans embedded RTOS and networking (VxWorks/Linux) as well as parallelizing test systems and porting complex SIP configurations. Based in Romania, he combines deep protocol-level expertise with practical operational improvements, often surfacing hard-to-detect issues like segfault causes and routing edge cases that improve reliability at scale.
13 years of coding experience
3 years of employment as a software developer
Universitatea "Politehnica" din Bucuresti
Github Skills (17)
kamailio10
redis10
telephony10
graphite10
c-programming10
c1110
voip10
sip10
c1710
sips10
networking9
configuration-management9
database8
multithreading8
databases8
Programming languages (2)
Github contributions (5)
kamailio/kamailio
Mar 2013 - Jan 2023
Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms -
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 reviews, 85 commits, 31 PRs in 9 years 11 months
Contributions summary:Lucian primarily focused on improving the `carrierroute` module, which handles routing and gateway selection within the Kamailio SIP server. Their contributions involved enhancing the `cr_route` function to prevent the selection of previously used gateways within a failure route, and adding a `cr_reload` sercmd for dynamic updates. They modified the core logic for carrier route functionality, impacting PSTN destination handling, along with adding logging functionality to the `acc` module. Furthermore, they fixed a potential segfault and made several code improvements across the project.
voltesip-serverkamailiofreeswitchchat
sipwise/rtpengine
Aug 2015 - May 2018
The Sipwise media proxy for Kamailio
Role in this project:Back-end Developer
Back-end DeveloperContributions:3 reviews, 27 commits, 20 PRs in 2 years 8 months
Contributions summary:Lucian primarily contributed to adding and improving the statistics gathering and reporting functionalities within the rtpengine project. Their work involved modifying the `daemon/graphite.c`, `daemon/call.c`, `daemon/call.h`, and `daemon/cli.c` files to collect, calculate, and output various call-related metrics, including call durations, session counts, and relayed packet information. Furthermore, they refactored the redis integration to incorporate new metrics and address potential issues, like handling foreign calls. These changes enhanced the system's monitoring capabilities and improved its ability to track session behavior.
proxykamailiofreeswitchmedia-proxyvideo
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.