Dragos Ofrim
Software Engineer at InterNET srl
Bucharest, Romania
Summary
🤩
RockstarDragos Ofrim is a software engineer based in Bucharest with 11 years of hands-on experience building and hardening backend systems, particularly in telecom and VoIP software. He has contributed to prominent open-source projects like FreeSWITCH and Sofia-SIP, focusing on codec handling, FEC/CBR bitrate control, and eliminating subtle runtime bugs such as null dereferences and logging overflows. At InterNET srl he continues to apply pragmatic, low-level debugging and feature work that improves reliability and interoperability across diverse runtime conditions. Known for attention to detail, he often surfaces and fixes issues that prevent production failures rather than just adding features.
10 years of coding experience
Github Skills (20)
debugging10
debug10
c-language10
telephony10
c1110
voip10
sip10
c1710
sips10
codec10
cprogramming-language10
freeswitch10
testing9
sdk9
client-websocket8
Programming languages (4)
Github contributions (5)
signalwire/freeswitch
Jun 2015 - Oct 2022
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:141 reviews, 304 commits, 167 PRs in 7 years 5 months
Contributions summary:Dragos primarily contributed to the modification and enhancement of the FreeSWITCH Opus codec module. They focused on adding features to manage asymmetric sample rates, including maximum playback and capture rates. The contributions involve implementing a debug API command ("opus_debug") to show detailed information about the Opus payload, and introducing functionalities for keeping FEC (Forward Error Correction) enabled, including setting and modifying bitrate dynamically to manage packet loss. They addressed minor bugs with ptime parameters, and introduced the option for Constant Bit Rate (CBR) encoding.
telecomproprietarytelecommunicationswebrtccommodity-hardware
freeswitch/sofia-sip
Jan 2019 - Jan 2022
Sofia-SIP is an open-source SIP User-Agent library, compliant with the IETF RFC3261 specification.
Role in this project:Back-end Developer
Back-end DeveloperContributions:4 reviews, 23 commits, 2 PRs in 3 years
Contributions summary:Dragos primarily focused on bug fixes and code improvements within the Sofia-SIP library. Their contributions addressed issues related to case-insensitive WebSocket headers, overflow problems in logging, and null pointer dereferences. The user also resolved scan-build warnings related to unread values and null pointer dereferences across several files, demonstrating a focus on code quality and preventing potential runtime issues.
agentkamailiocompliantspecificationfreeswitch
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.