Qureos

Find The RightJob.

Job Summary

We are seeking a CS Core / IMS / SVC Engineer to support, operate, and evolve mobile core networks. The role covers CS, IMS, and SVC solutions , with responsibilities and technical depth aligned to the candidates experience level. Engineers will work in live network environments, ensuring service availability, performance, and continuous improvement.


Core Network Knowledge

  • Understand the basic structure of mobile communication networks
  • Knowledge of CS / SVC solutions or IMS / SBC services with basic configuration capabilities

Signaling & Protocols

  • Basic knowledge of SS7 , M3UA , signaling link configuration, and GT routing
  • Familiarity with ISUP, BICC, SIP
  • Understanding of mobility control protocols:
  • BSSAP, RANAP, MAP, CAP
  • General knowledge of SIP, SDP, DIAMETER, DNS, ENUM

Mobility & Subscriber Concepts

  • Understanding of authentication and encryption mechanisms
  • Knowledge of LAI, LAC, cell, service area, paging, roaming, handover, STN-SR
  • Ability to check subscriber profiles in HSS and understand basic subscriber parameters

Operations & Support

  • Perform L1 health checks and maintain operational scripts
  • Monitor network performance, system logs, and capacity
  • Enable traces and support basic call troubleshooting
  • Provide first-line technical support for CS/IMS core network elements

© 2026 Qureos. All rights reserved.