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 -Core Network(HLR Titanium) (Karnataka)
🏢 Mavenir
📍 Karnataka