Middle С Developer

PortaOne, a company created by Ukrainians in 1997, is now a global software developer for modern telecommunications. The PortaOne platform, PortaSwitch, is a fundamental part of the business infrastructure for more than 470 service providers and telecommunications companies in ~ 90 countries

https://www.youtube.com/watch?v=bj0rdaBuhrU

Required Skills/knowledge:

• 4+ years in software development
• 3+ years of experience in C
• experience in working with Linux systems
• strong understanding of network technologies and protocols (TCP/UDP, RTP, NAT, IPv4/IPv6) development of real-time and high-performance software

Additional skills:

• knowledge of T.38
• knowledge of OPUS, AMR codecs - experience in media encryption (SRTP, ZRTP, DTLS, SDES) - experience in audio/video conferencing
• audio encoding/decoding (G711, G729, G723)
  
• experience in python, shell scripting

Responsibilities:

• development and optimization of PortaSIP components
• reviewing and extending functionality and capabilities of existing components (for instance improvements in terms of better scalability, failover, reliability, etc.)
• providing assistance for support with application issue troubleshooting
• proactive participation in discussion/design of new components/features/solutions which appear while PortaSIP/PortaSwitch evolves

We offer:

• Professional Development
• experienced colleagues who are ready to share knowledge
• We provide solutions to 470 operators from 90 countries. In the modern world, our product is necessary, and this means that you will be in business, with interesting challenges and a stable income
• Each of our projects is different
• We have high standards of programming and continuous improvement of processes, without unnecessary bureaucracy
• Paid vacation and sick leaves
• Competitive salary in USD
• Team buildings and corporate events
• https://www.youtube.com/watch?v=Xo2eA2lQK9U&feature=share
• Cozy office in the city center with lots of delicious benefits and a relaxed, friendly environment