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.