Join our Team : About this opportunity :

- Ericsson is currently seeking a energetic Specialist - CS Core, based in Noida, supporting Ericsson network architectures in a 24x7 environment. This is a hands-on, senior technical role owning configuration, troubleshooting, security compliance and operational integrity for CS Core and IMS network nodes. You will work closely with customers, third-party vendors and internal Ericsson teams to ensure stable live service delivery, drive continuous improvements to processes and procedures, and mentor peers to raise overall competence. - What you will do :

- Take ownership of day-to-day administration and support of CS Core and IMS nodes (configuration, upgrades/patches, health checks, backups).

- Monitor, review and drive closure of Trouble Tickets (TT), Change Requests (CR) and Acceptance Tests (AT); escalate and coordinate when needed.

- Perform preventive and corrective maintenance; execute planned maintenance windows.

- Troubleshoot and perform root-cause analysis for incidents and outages; prepare outage reports and follow-up remediation.

- Ensure MSTOP and other workplace processes are followed; enforce password, security and audit policies.

- Participate in technical discussions to improve network performance and resilience; recommend and implement best-practice changes.

- Interface with customers, 3rd-party vendors and project teams to ensure smooth handovers and successful deliveries.

- Create and improve procedures, runbooks and routine documentation; support audits and compliance activities.

- Mentor and guide peers, share knowledge and promote a culture of continuous learning.





The skills you bring :

- B.E. / B.Tech. in Electronics & Communication (or equivalent).
- 6-9 years’ experience in the telecom industry, with demonstrated experience in CS Core and IMS domains. Experience with Ericsson networks preferred.
- Comfortable working in a 24x7 support environment and handling emergency incidents.
- Strong practical knowledge of CS Core and IMS network nodes and their behavior (call flows, call scenarios, AT cases).
- Protocol expertise: SS7, ISUP, BICC, SIGTRAN, INAP, CAP, TCAP, MAP, SCCP, SIP, SDP, GTP, Diameter.
- Ericsson core hardware and virtual nodes (examples: Blade Cluster, APG 43L, M-MGw GMPv4, SIS-BC, BSP-BC, APZ series, and virtual IMS nodes such as SBG, BGF, MRS).
- Solid understanding of 2G/3G/4G/LTE and VoLTE/IMS architectures and performance characteristics.
- Proven troubleshooting, problem analysis and incident management skills (TT/CSR/TR/SR lifecycle).
- Familiarity with operational tasks: configuration management, CR execution, AT/acceptance processes, backups and health checks.
- Experience interfacing with customers, vendors and cross-functional teams.

Why join Ericsson? At Ericsson, you´ll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what´s possible. To build solutions never seen before to some of the world’s toughest problems. You´ll be challenged, but you won’t be alone. You´ll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next. - Primary country and city : India (IN) || Noida

Req ID : 785253

📌 Senior Engineer Core Technical Authority (Noida)
🏢 Ericsson
📍 Noida