Senior VoIP Engineer

🔥 12 hours ago

🇮🇱 Israel – Remote

💵 €5k / month

⏳ Contract/Temporary

🟠 Senior

👷🏻‍♀️ Engineer

👻 Ghost score 0%

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Synergy Beam Solutions

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2017

💼 Consulting

📣 Marketing

📦 Logistics

Consulting • Marketing • Logistics

Synergy Beam Solutions is an IT services and solutions firm that designs, implements, integrates, and maintains business information systems for SMBs and enterprises. The company provides IP telephony and call center platforms, data center consulting, cloud architecture and migration, business continuity planning, and cybersecurity consulting, offering custom-tailored, long-term B2B engagements.

📋 Description

• Design, develop, and maintain high-performance SIP- and RTP-based VoIP systems • Serve as the subject matter expert on core VoIP protocols • Diagnose and resolve complex routing, codec, and signaling issues using packet captures, logs, and SIP traces • Optimize network performance across SIP, RTP, TCP/IP, DNS, NAT, and firewall rules • Integrate and support PBX systems, SBCs, and modern cloud VoIP environments • Define, monitor, and improve call quality metrics including MOS, jitter, and latency • Lead the technical architecture and deployment of advanced voice applications, including real-time transcription, AMD/VMD, and AI-driven voice features • Act as the final technical escalation point for complex VoIP incidents, coordinating with internal teams and external vendors

🎯 Requirements

• 6+ years in software engineering, with a minimum of 4 years dedicated to VoIP/SIP development • Deep, hands-on experience with Freeswitch and Kamailio • Proficiency in Lua and Python • Experience with Go or C/C++ is a significant plus • Expert-level command of network protocols and advanced debugging tools, including Wireshark, SIPp, libpcap, and Linux/BSD sockets • Practical experience with WebRTC, TURN/STUN servers, and major cloud platforms including AWS, Google Cloud, and Cloudflare • Understanding of traditional telecom hardware, including GSM, E1 gateways, and serial-connected devices • Proven track record building highly scalable systems and implementing effective automated testing frameworks • Hands-on knowledge of call flow simulation tools and SIP testing frameworks preferred • Experience designing and implementing RESTful APIs and scalable microservices preferred • Familiarity with global network routing principles and optimization techniques preferred • Experience with embedded systems or SIP hardware devices preferred • Background implementing AI/ML-driven features within VoIP solutions preferred