Core Network Engineer

Posted 31 August 2021
LokációBudapest, Budapest
Job type Közvetítés
ÜzletágIT / Telekom
ReferenciaBBBH468540_1630400156

Job description

About the role

Responsibilities:

Position duties and responsibilities include, but are not limited to:

  • Perform consultative or on-site support of ZTE IMS core network elements, platforms, systems, applications and services (Fixed).
  • Independently perform diagnostic investigation of complex customer-impacting ZTE IMS Fixed core network issues towards the goal of fast resolution.
  • Perform software upgrade of ZTE IMS core network elements like CSCF/SSS/SBC/MGCF/MGW/USPP/NFV, etc.
  • Analyze core network design, reliability, performance, and maintenance problems and provide design improvements and recommendations to improve the customer experience and operational support a wide array of platforms in the TMO NGN CS and IMS voice core network, including MSS/MGW, MGCF, CSCF, BGCF, TAS, MRF, ATCF, and SBC equipment.
  • Independently analyze highly complex technical Fixed service issues that cannot be resolved through routine or automated operations and maintenance procedures and drive investigations to isolate the root cause for fast resolution and limit customer impact.
  • Provide IMS core network Training to ZTE's customer.

Requirements:

  • Applying expert-level knowledge of SIP/Diameter protocol, familiar with IMS core network architecture, and have experience in delivering IMS core network products (I/S-CSCF and related AS) and Fixed service;
  • Applying expert-level knowledge of IMS and Fixed network signaling standards and protocols including SIP, SDP, RTP, ENUM, DNS, and Diameter to analyze signaling flows using ZTE internal tracing tools to analyze independently to isolate equipment and software faults.
  • Using knowledge of IP protocols including TCP, UDP, SCTP, IPSec, TLS, HSRP, and STP to analyze and isolate IP network faults that could impact the operations of IMS core network nodes and impact customer service, including reviewing IP network design of Core network nodes and identifying possible flaws and improvements.
  • Using Linux to perform routine operational and maintenance OS level tasks, including performing system backups, creating and managing file systems, and searching thru log files,etc.
  • Proficiency in English and in Hungarian

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