Telecom Core Network Engineer (SDM / HSS / UDM) This role focuses on the implementation and support of SDM nodes such as HSS, HLR, UDM, ONE-NDS, SDL, EIR, and MNP, ensuring stable and efficient operation across 4G, 5G, and IMS network environments. The ideal candidate will possess strong experience in telecom signaling protocols, SDM domain knowledge, Linux-based systems, and cloud-native telecom environments, while working closely with customers during implementation, testing, and acceptance phases. Key Responsibilities Provide technical consultation and solution guidance aligned with customer network requirements. Perform integration, deployment, and upgrades of SDM nodes, including HSS, HLR, UDM, ONE-NDS, SDL, EIR, and MNP. Support implementation, integration testing, acceptance testing, upgrades, operations, and maintenance (O&M) of telecom core network platforms. Participate in customer acceptance testing, executing test cases and validating network functionality using Troubleshoo...