Company: Top Selection
Location: Moscow, Russia
Format: Remote (RF), RF location
Employment: Full-time
Salary: 260000–300000 RUB per month
Project: until the end of the year with continuation
Field: Telecom solutions
Contract: via sole proprietorship agreement

We are looking for a Senior C++ Developer (VoIP/Telecom)

Format: Remote (RF), RF location

Who we are looking for:

A strong C++ developer with a background in VoIP / media streaming. You need not just to write code, but to be able to squeeze the maximum performance out of low-level systems in Linux.

Key requirements:

• Minimum 3 years of C++ development in a production environment
• Experience with VoIP/telephony or media streaming
• Experience in profiling and performance optimization
• Ability to work in a team and a proactive attitude

Mandatory requirements:

• Programming languages: strong knowledge of C++ (main project language) and Perl (additional, for tests)
• System programming: experience in developing low-level and high-load applications in Linux
• Network technologies:
• Deep understanding of RTP/RTCP, SIP, SDP protocols
• Knowledge of UDP/TCP, network sockets, multicast
• Linux systems: administration, kernel interaction, netfilter/iptables
• Audio/video codecs: understanding the principles of G.711, G.729, H.264, etc.

Infrastructure skills:

• Git (working with pull requests, code review)
• Build systems (Make, CMake)
• Debugging and profiling (gdb, valgrind, perf)

Desirable skills:

• Knowledge of additional languages: Python, Shell scripting
• Experience with Kamailio, OpenSIPS, Asterisk or other SIP servers
• Understanding of WebRTC technologies
• Experience with high-load systems
• Knowledge of monitoring protocols (SNMP, Prometheus metrics)