Job Summary :

We are looking for experienced Core Network professionals with robust 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 :
- Subscriber provisioning and modifications.
- Alarm and fault management.
- Database maintenance and system health monitoring.
- 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 :
- HSS (Home Subscriber Server).
- UDR (Unified Data Repository).
- ePDG (Evolved Packet Data Gateway).
- Strong operational exposure to HLR Titanium.
- Good understanding of LTE / VoLTE / 5G Core concepts.
- Protocol knowledge :
- Diameter, MAP, SS7.
- 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).

📌 Senior Engineer - Network Platform (India)
🏢 Mavenir Systems
📍 India