B.V.D. SABARI PANDIYAN

Highly motivated and Dynamic Telecom Engineer with 15+ years of experience, including 12.5 years of relevant telecom expertise in embedded software testing, team leadership and commercialization of cutting-edge 3G/4G/5G-SA & NSA technologies for mobile, automotive, and wearable devices, across global operators/carriers. Adept at managing large-scale test projects and leading cross-functional teams to ensure high-quality product release. Strong expertise in IMS technologies and SIP signalling, including VoLTE, ViLTE, RCS, Wi-Fi Calling (WFC), and other IMS services like Conferencing, XCAP, USSD, E911, RTT and SMS. Deep understanding of IMS architecture, call flows and key network elements such as PCRF, P-CSCF, S-CSCF, I-CSCF, HSS, and Application Servers (AS). Sound knowledge of 5G Core and RAN architecture and its key elements, including AMF, SMF, UPF, NRF, NSSF, PCF, UDM, and NEF. Proven expertise in analyzing, debugging and resolving technical challenges across multiple layers of the cellular protocol stack. Sound knowledge in automation strategy and carrier acceptance testing.

• Awarded 'QUALSTAR' for IMS Commercialization & Quality Project Release at Qualcomm.
• Received multiple 'PAT on the Back' awards for delivering bug-free product releases, and on time Customer support.
• Recognized as a 'STAR PERFORMER' for leading carrier acceptance testing with 98% success.