Job Summary :

We are looking for experienced Core Network professionals with strong hands-on expertise in HSS, UDR, and ePDG platforms. Candidates with HLR Titanium operational experience will be highly preferred. The role involves day-to-day operations, troubleshooting, configuration, and support of critical mobile core network elements in a high-availability environment.

Key Responsibilities :

Core Network Operations :

- Perform L2/L3 operations and maintenance for HSS, UDR, and ePDG nodes.

- Monitor system performance, alarms, KPIs, and health checks.

- Troubleshoot complex issues related to subscriber data, authentication, authorization, and mobility.

- Manage incident handling, problem management, and service restoration within SLA.

HLR Titanium :

- Hands-on experience with HLR Titanium operations including :

1. Subscriber provisioning and modifications.

2. Alarm and fault management.

3. Database maintenance and system health monitoring.

4. Support upgrade, migration, and patching activities.

Configuration & Support :

- Configure network elements and perform change management activities.

- Coordinate with NOC, vendors, and cross-functional teams for issue resolution.

- Support OSS/BSS integrations and interface troubleshooting (Diameter, MAP, SS7, IPsec).

Documentation & Compliance :

- Prepare and maintain operational procedures, SOPs, and technical documentation.

- Participate in audits, DR drills, and capacity planning exercises.

Required Skills & Experience :

Mandatory Technical Skills :

- Hands-on experience with one or more :

1. HSS (Home Subscriber Server).

2. UDR (Unified Data Repository).

3. ePDG (Evolved Packet Data Gateway).

- Strong operational exposure to HLR Titanium.

- Good understanding of LTE / VoLTE / 5G Core concepts.

- Protocol knowledge :

1. Diameter, MAP, SS7.

2. IP, TCP/IP, VPN, IPsec.

- Experience working in 24x7 operations or production support environments.

Tools & Platforms :

- Linux/Unix system administration.

- Network monitoring and alarm tools.

- Log analysis and troubleshooting utilities.

Nice to Have :

- Exposure to 5G core subscriber management.

- Experience with vendor solutions (Ericsson / Nokia / Oracle / Huawei).

- Scripting knowledge (Shell / Python).

- Prior experience in managed services or telecom operations projects.

Education :

- BE / B.Tech / MCA or equivalent technical qualification.

Soft Skills :

- Strong troubleshooting and analytical skills.

- Good communication and stakeholder coordination abilities.

- Ability to work independently and in a team environment.

- Willingness to work in shifts (if applicable).