Software Engineer III – VoIP / FreeSWITCH
Vonage (company site, opens in a new tab)6+ yrsBengaluruOn-siteDirect career pageEst. 22–38 LPA
Posted 2h ago
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Job description
Structured overview of role & requirements
About This Role
- Design and develop scalable, high-volume telephony applications handling real-time voice traffic for Vonage’s UCaaS platform.
- Create and maintain custom FreeSWITCH modules, dialplan configurations, and ESL integrations to enable advanced call control features.
- Lead technical innovation and mentor team members while delivering production-ready, mission-critical voice features like call recording, voicemail, and conferencing.
Minimum Requirements
- 6+ years of software development experience; 3+ years hands-on with telephony platforms (FreeSWITCH, Asterisk, or similar).
- Deep expertise in SIP, RTP, VoIP architecture including NAT traversal techniques, audio codecs, dialplan development.
- Proficiency in Java, C/C++, Python, SQL, and experience with CI/CD, Docker, Kubernetes.
- Hands-on experience with AWS (EC2, EKS, Lambda, etc.), Linux systems, relational and NoSQL databases.
Ideal Candidate Profile
- Experienced in building and operating complex, distributed real-time voice communication systems at scale.
- Strong background in telephony protocols and open-source PBX platforms with a systematic approach to debugging and performance optimization.
- Skilled in end-to-end feature delivery within agile teams while balancing innovation with reliability and user experience.