VOIP Developer

Company: Elision Technologies Pvt. Ltd. Job Title: VoIP Developer Location: Ahmedabad, Gujarat Experience: 5+ Years Employment Type: Full-Time Department: Engineering / Product Development About the Role Elision Technologies Pvt. Ltd. is looking for an experienced VoIP Developer to develop, customize, and maintain enterprise-grade telecom and unified communication solutions. The ideal candidate should have strong expertise in FreeSWITCH, OpenSIPS, Asterisk, Kamailio, and FusionPBX , along with a solid understanding of SIP-based communication systems and VoIP technologies. You will work closely with Product, QA, DevOps, and Support teams to build scalable, secure, and high-performance telecom applications for global customers. Key Responsibilities Design, develop, and maintain VoIP and telecom applications. Configure, customize, and optimize FreeSWITCH, Asterisk, OpenSIPS, Kamailio, and FusionPBX . Develop SIP-based call routing, IVR, conferencing, recording, and telephony solutions. Integrate VoIP platforms with CRM systems, REST APIs, and third-party applications. Troubleshoot SIP, RTP, codec, NAT, and signalling issues. Optimize system performance, scalability, and high availability. Perform debugging, testing, and code reviews. Collaborate with cross-functional teams to deliver new features and product enhancements. Prepare technical documentation and follow development best practices. Required Qualifications Bachelor's degree in Computer Engineering, Information Technology, or a related field. 5+ years of experience in VoIP or Telecom Software Development. Strong programming skills in C, C++, Python, PHP, or Java . Hands-on experience with Linux environments and networking concepts. Good understanding of REST APIs, SQL databases, and system integration. Required Technical Skills FreeSWITCH OpenSIPS Asterisk Kamailio FusionPBX SIP & RTP Protocols VoIP & IP Telephony WebRTC Linux Administration REST APIs MySQL / PostgreSQL TCP/IP & Networking Preferred Skills Experience with Contact Center Solutions, Predictive Dialers, and Auto Dialers. Knowledge of Cloud Telephony, Unified Communications (UC), and IP PBX. Experience with Docker, Kubernetes, or cloud platforms. Familiarity with AI-powered Voice Bots and speech technologies is an added advantage. Key Skills FreeSWITCH OpenSIPS Asterisk Kamailio FusionPBX SIP & VoIP Why Join Elision Technologies? Work on innovative VoIP, Contact Center, and AI-powered communication products. Opportunity to build scalable telecom solutions for global enterprises. Collaborative, technology-driven work culture. Continuous learning and career growth opportunities. Competitive salary and performance-based incentives.