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Medium — mid-level backend at a known enterprise but specialized VoIP/C++ expertise limits applicant density.
High — specialized telecom, VoIP protocols and C++ multithreaded systems reduce cross-industry transferability.
High — explicit 6–8 years plus mandatory C/C++ and VoIP/multithreading experience filters strictly.
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Develop and maintain software for Mission Critical Voice, Data, and Video communications products following 3GPP standards.
Perform system integration of software and hardware ensuring throughput and program consistency.
Implement and validate end-to-end use cases for communication protocols including MCPTT, MCData, MCVideo, and related services.
6-8 years hands-on development experience using C or C++ on Windows or Linux/Unix environments.
Strong understanding of VoIP architecture and protocols: SIP, RTP, RTCP, SRTP, Sockets, HTTP.
Full understanding of compile/build tools in Linux, Android, iOS, or Windows environments.
Basic knowledge of Networking Protocols including HTTP, TCP/IP, UDP, DNS, SSL, Firewall/NAT.
Experienced in multithreaded application development with domain knowledge in WPF, HTTP, ECC, OIDC, XML, JSON, GitHub workflows.
Familiar with debugging VoIP traffic using Wireshark/tcpdump and 3GPP Mission Critical Standards.
Knowledgeable in encryption/security protocols (AES-GCM, Mikey-Sakke), cloud environments like Azure, scripting in Python, and agile/scrum development processes.