Core Network Engineer
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Description
We are looking for a highly skilled Core Network Engineer to manage and maintain HLR/HSS systems and provisioning platforms in a multi-country telecom environment. The role involves handling SIM lifecycle management, core network provisioning, troubleshooting IMS call flow issues, and supporting operational excellence across telecom network systems.
Key Responsibilities:
- Configure, operate, and maintain HLR/HSS systems in a multi-country environment
- Support SIM and voucher management systems operations and maintenance
- Handle provisioning of core network components and IT systems
- Collaborate with core network teams, architects, vendors, and country operations teams
- Troubleshoot and resolve operational issues related to provisioning platforms and HLR/HSS systems
- Manage SIM profile provisioning, testing, and lifecycle management
- Work with IMS teams to resolve VoLTE, VoWiFi, USSI, and handover-related issues
- Perform Wireshark tracing and debugging for infrastructure-related incidents
- Support geographical expansion projects through HLR integration and configuration
- Drive process automation and operational improvements
- Plan SIM capacity and forecast operational requirements
Requirements
- BE in Electronics, Computer Science, or related field
- 10–12 years of experience in telecom core network operations
- Strong knowledge of HLR/HSS, STP, and DRA systems
- Experience with IMS call flows such as VoLTE, VoWiFi, and handovers
- Hands-on experience in SIM provisioning and SIM profile management
- Strong database knowledge in Oracle, SQL Server, or similar platforms
- Experience with PL/SQL, UNIX administration, and batch scripting
- Knowledge of Wireshark tracing and troubleshooting
- Familiarity with AWS or other cloud platforms
- Working knowledge of Jira and Confluence
- Shell scripting/programming knowledge is an added advantage