Core Expert

1 month ago


Gurgaon, Haryana, India Stefanini Full time
Job Title: Core Expert

Stefanini is a global IT services organization with 37 years of experience, headquartered in Brazil, São Paulo. We have a presence in 41 countries with 88 offices across the globe and employ over 38,000 people.

Job Requirements:
  • Design, integration, and maintenance of IMS Network components for VoLTE/5G Networks.
  • Expertise in handling core operations, troubleshooting, and configuration management of IMS and CS Core.
  • Rich experience in designing and troubleshooting IMS and Interworking entities (P/I/S-CSCF, HSS, SLF, BGCF, MGCF, MRFC, MRFP, AGW, IBCF, TrGW).
  • Knowledge of Virtualized IMS and EPC Network nodes.
  • VoLTE troubleshooting and call trace analysis (wireshark) with session analyzer and interfaces.
  • Responsible for performance management of VOLTE and CS Core KPIs (Registration, Paging, SRVCC, VoLTE Drops).
  • Knowledge of configuration management (Parameters, Features, Timers) of IMS and CS core.
  • Extensive experience with IMS functionalities, SIP Call processing, and SIP Supplementary Services.
  • In-depth understanding of Telecom Protocols (TLS, TCP, IPSEC, IP) and technologies like SIP, SDP, MGCP, DIAMETER, etc.
  • Responsible to maintain HLD & LLD designs of the CS Core/IMS network.
  • Knowledge on Session Border Controller, NAT, Firewall, Authentication Encryption, L2 Layer switches (Routers/Switches).
  • Media handling, transcoding, call modeling CS, SMS, MMS, and need to have knowledge on the MGW's.
Requirements:
  • Engineering Graduate – BE/B.Tech (Preferred in Electronics & Communication stream) with 6-10 years' experience.
  • Multi-vendor Hands on Experience in handling core operations, troubleshooting, & configurations management, specially Nokia and Ericsson.
  • Sound end to end knowledge of mobile network technologies and services, specially CS Core & IMS network with 5+ years' experience.
  • Willing to travel at short notice and open to relocate to any part of the world.
  • Ready to work in Shift as per business needs.

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