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Software Developer

Remote, FreeSWITCH Solutions LLC

Work on software development projects for the FreeSWITCH team. Build systems for testing and fix issues. Must be proficient in programming and able to work diligently.


Strong Linux skills for compiling and managing servers. (Debian packaging a plus)

Programming experience in PHP, C Perl

Diagnostic skills required to dig into complex scenarios.

Strong understanding of VoIP protocols especially SIP and RTP (audio and video)

Strong Wirehark skills.

Above average skills with Linux

Knowledge about VoIP server software such as FreeSWITCH and Asterisk.


Work in a fast-paced challenging environment.

Learn skills related to being involved in a large software project.

Work remotely.

FreeSWITCH is a scalable open source cross-platform telephony platform designed to route and interconnect popular communication protocols using audio, video, text or any other form of media. It was created in 2006 to fill the void left by proprietary commercial solutions. FreeSWITCH also provides a stable telephony platform on which many applications can be developed using a wide range of free tools.

FreeSWITCH can perform full video transcoding and MCU functionality using its conferencing module. FreeSWITCH supports many advanced SIP features such as presence/BLF/SLA as well as TCP TLS and sRTP. It also can be used as a transparent proxy with and without media in the path to act as a SBC (session border controller) and proxy T.38 and other end to end protocols. FreeSWITCH supports both wide and narrow band codecs making it an ideal solution to bridge legacy devices to the future. The voice channels and the conference bridge module all can operate at 8, 12, 16, 24, 32 or 48 kilohertz in mono or stereo and can bridge channels of different rates. The G.729 codec is also available under a commercial license. FreeSWITCH builds natively and runs standalone on several operating systems including Windows, Max OS X, Linux, BSD and Solaris on both 32 and 64 bit platforms. FreeSWITCH supports FAX, both over audio and T.38, and can gateway between the two.

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