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 new 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
robust 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 development
mus

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