About the Chance

We are looking for a Engineer/Senior Engineer IMS/CS Core to join our team and lead the coordination, execution, and troubleshooting of high-level reactive maintenance activities in Core Network domains. You will be responsible for supporting complex technical issues beyond the scope of 1st level Operations, ensuring service continuity and adherence to processes like MSTOP.

What You Will Do
Perform configuration changes, hardware expansions, and troubleshooting activities for: CS Core Nodes: MSC, MGW, HLR, HSS, STP, SBC IMS Core Nodes: UDM (CUDB, HSS-FE, HLR-FE), P-CSCF, I-CSCF, S-CSCF, ATS, MGCF, MRFP, CG, ENUM, DRA, UPG.
Ensure all actions follow approved and standardized operational processes (MSTOP)
Conduct RCA (Root Cause Analysis)



and prepare technical reports Collaborate with cross-functional teams to drive issue resolution and network enhancements Maintain documentation of configurations, issues, and resolutions.

You Will Bring
Solid knowledge of telecom protocols including: SIP, H.248, SS7, ISUP, BICC, SIGTRAN, INAP, CAP, TCAP, MAP, SCCP, Diameter.
Deep understanding of: Call flows in CS Core, IMS / VoLTE architecture and operations.
Ability to troubleshoot and resolve complex IMS and legacy network issues Solid analytical and communication skills.

Key Qualifications
Education: Bachelors degree in Electronics and Communication Engineering or related field Experience.
Relevant 5+ years in Core Network operations and support, particularly IMS/VoLTE
Relevant certifications in IMS, VoLTE, or Network Operations (optional but preferred)

📌 Senior Engineer Cs/ims Core Noida (India)
🏢 Ericsson
📍 India