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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.
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
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
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
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
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
Mentor junior developers and review code
Collaborate with product managers, QA, and operations teams
Document architecture, workflows, and technical decisions
Tata Communications is a digital ecosystem enabler that powers today’s fast-growing digital economy. We enable the digital transformation of enterprises globally, including 300 of the Fortune 500. We carry around 30% of the world’s internet routes and connects businesses to 60% of the world’s cloud giants.
We have been a part of the rich heritage of the internet in India. Over the last 25 years, enterprise-enabled services have been essential to the adoption of digital services in the country. Connectivity is an essential fabric of sustenance for the economy. We are committed to enabling Industry leaders in this New World of Communications™, with our unique promise of delivering secure connected digital experiences.
In 2020, we announced the launch of ‘Secure Connected Digital Experience’ (SCDx), a proposition intended to meet this growing, worldwide demand for new ways of operating, which includes far higher levels of working from home, rising security risks, a shift to digital commerce, and more contactless experiences. It will help companies currently relying on short-term fixes by providing holistic, secure, enterprise-level digital solutions that address current challenges and are fit for the long term.
Job ID: 138198499
