Role description Job Title: Packet Core Test Engineer Exp : 7+ years Location : Noida / Chennai - Hybrid Roles and Responsibilities • Ensure smooth operation of the GSM/UMTS/LTE/VO-LTE specific Packet Core Network. • Be part of a team specific PCN Network activities associated with Mobile GSM/UMTS/LTE/VO-LTE Network. • Be responsible for Administrate PCN and Support Systems. • Be responsible for planned Maintenance (Health Checks, Backups etc.). • Be responsible for problem Escalations and Follow-ups (CSR). • Be responsible for Performance Analysis & Investigation. • Provide technical guidance to Care team engineers to avoid/minimize troubleshooting challenges. • Work cooperatively with various internal teams to ensure that customer support issues are dealt with in a timely manner and in-line with expectations for any project/support work that rely on it. • Partnering with regional Care teams to share best practices & implement best practices. • Contribute to Continuous Excellence initiatives to improve Care effectiveness & efficiency, Product improvement and Customer experience improvement. • Develop strong relationships with our customer teams and end customers. • 24x7 Emergency support for Critical issues and occasional shift-work based off customer needs. Qualifications: • Minimum 7-10 years of demonstrable professional experience, very good hands on and working level knowledge of any Vendor Packet Core nodes, SGSN-MME, GGSN (SGW/PGW), EPDG etc. • Mandatory Hands-on Exp on Nokia CMM/CMG Deployments & Upgrades. • Test/Validation of nodes like eMBB , FWA, CFWA, 5G-SA services for 4G and 5G · Good understanding of EPC, VoLTE, Vo-Wifi solutions and call flows. • Having knowledge of 5G SA various architecture, services like FWA, IOT/ Slicing • Multi-party vendor node integration • Exp in Live N/W touch Activities in Maintenance windows • Knowledge of GSM, SS7, Sigtran, TCP/IP, S1AP, RANAP, SCCP, SCTP, Iu-PS, BSSGP, GTP and Diameter protocol. • Good Understanding of Packet Core surrounding Nodes (PCRF, AAA, DNS, Charging). • Analyze and plan customer requirements and ensure flawless execution of changes. • Familiar with critical PACO & VoLTE Network KPIs. • Good understanding of Diameter Interfaces & Error Codes.