Mavenir is building the future of networks and pioneering advanced technology, focusing on the vision of a single, software-based automated network that runs on any cloud. As the industry's only end-to-end, cloud-native network software provider, Mavenir is transforming the way the world connects, accelerating software network transformation for 250+ Communications Service Providers in over 120 countries, which serve more than 50% of the world’s subscribers.

Role Summary

Plans, designs, develops and tests software systems or applications for software enhancements and new products including cloud-based or internet-related tools.

Key Responsibilities

Feature development for IMS based SBC solutions

Managing existing deployments and customer support

Building test framework to help test the current feature/fixes for UT/IT

Job Requirements

Core SIP and IMS Protocol Development

must-have Deep knowledge of SIP (RFC 3261 and extensions: PRACK, UPDATE, REFER, SUBSCRIBE/NOTIFY, PUBLISH) for implementing and debugging call control logic





must-have Hands-on experience implementing IMS call flows (VoLTE, VoWiFi, RCS) at the P-CSCF / SBC layer — registration, session establishment, supplementary services

must-have Strong understanding of SDP offer/answer model, codec negotiation (G.711, G.729, AMR, EVS, Opus), and DTMF relay mechanisms

strong Experience with Diameter protocol development (Rx, Gx, Gy, Cx interfaces) and SCTP transport implementation

strong Familiarity with STIR/SHAKEN identity framework implementation for call authentication and attestation

C/C++ Programming skills

must-have Expert-level C/C++ (C++14/17) for high-performance, low-latency signaling and media processing components

must-have Proficiency in multi-threaded programming, lock-free data structures, and event-driven architectures (e.g., select/epoll, Boost.Asio)

must-have Experience with memory management, profiling, and debugging tools (Valgrind, GDB, AddressSanitizer, perf)

Media and RTP plan

📌 Member of Technical Staff (Bengaluru)
🏢 1000 Mavenir Systems
📍 Bengaluru