About The Company
Tata Communications Redefines Connectivity with Innovation and IntelligenceDriving the next level of intelligence powered by Cloud, Mobility, Internet of Things, Collaboration, Security, Media services and Network services, we at Tata Communications are envisaging a New World of Communications
We are seeking an experienced
Software Architect & Developer with deep expertise in
VoIP and real-time communication systems. The ideal candidate will design, build, optimize, and scale high-performance telecom platforms using
FreeSWITCH, Kamailio, SIP signaling, and RTP media technologies. This role combines
hands-on development,
system architecture, and
technical leadership in a production-grade environment.
Key Responsibilities
Architecture & System Design
- Design and architect scalable, high-availability VoIP platforms
- Define end-to-end architecture for SIP signaling, media handling, and call routing
- Make architectural decisions around performance, security, and fault tolerance
- Lead technical design reviews and ensure best practices are followed
Development & Implementation
- Develop and maintain core services using Golang and C/C++
- Customize and extend FreeSWITCH and Kamailio for call control, routing, and media handling
- Implement SIP features using SIP, SDP, RTP, RTCP, SRTP, and DTLS-SRTP
- Build backend services and APIs supporting VoIP workflows
- Integrate messaging and data layers using Redis, RabbitMQ, MySQL, MongoDB
Performance, Reliability & Security
- Optimize call setup times, media quality, and system throughput
- Ensure secure communication using SRTP and DTLS-SRTP
- Monitor, debug, and resolve signaling and media-related issues
- Perform deep protocol-level analysis to troubleshoot complex VoIP problems
Debugging & Monitoring
- Analyze SIP and RTP traffic using Wireshark and VoIP monitoring tools
- Identify packet loss, jitter, latency, and signaling issues
- Proactively improve system observability and alerting
Cloud & DevOps (Optional But Preferred)
- Deploy and manage VoIP services on AWS or other cloud platforms
- Containerize services using Docker
- Orchestrate deployments with Kubernetes
- Work closely with DevOps teams to improve CI/CD pipelines
Collaboration & Leadership
- Mentor junior developers and review code
- Collaborate with product managers, QA, and operations teams
- Document architecture, workflows, and technical decisions
