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.