Senior Member Technical Staff – I, Software

Mavenir — Bangalore, India

Feature development for Mavenir SBC products on control and media plane Customer support for deployed networks Work closely with Test and Operation teams for product support UT/IT development Job Requirements Core SIP & IMS 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 C/C++ System Programming 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) strong Scripting in Python or Bash for automation, build tooling, and CI/CD pipeline integration nice Experience with Rust for safety-critical components or Go for microservice-based SBC architectures Media Plane and RTP Development must-have Solid understanding of RTP/RTCP, jitter buffers, packet loss concealment, and RTCP-based QoS feedback mechanisms must-have Experience developing or integrating SRTP/DTLS-SRTP encryption for secure media transport in IMS environments strong Knowledge of media transcoding pipelines, codec adaptation, and SIPREC-based call recording architectures nice Familiarity with DPDK or kernel-bypass networking techniques for high-throughput media forwarding at scale Security Feature development must-have Experience developing TLS/mTLS session management,

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