Core Network Technical Director

Key Responsibilities

Perform installation, configuration, and commissioning of EPC/5GC/IMS/HSS/UDM network elements.

Integrate CN elements with RAN, Transmission/IP, Charging, and OSS systems.

Network Testing & Acceptance

Prepare and execute test cases for functionality tests (attach, session establishment, VoLTE/VoNR call flows).

Interface testing (S1/N2/N4/S6a/SIP/DIAMETER/HTTP2).

Performance and stability testing.

Support operator acceptance activities and generate test reports.

Cutover & Migration Support

Assist in live‑network cutover, traffic migration, feature activation, and rollback plan execution.

Monitor network KPIs (registration success rate, call setup success, session drop rate).

Provide immediate on‑site issue analysis during cutover windows.

Troubleshooting & Maintenance

Perform first‑line and second‑line troubleshooting using logs, traces, and Wireshark.

Work with HQ R&D/Backline teams to resolve complex issues.

Perform routine health checks, system upgrades, patch installation, and backup/restore.

Documentation & Reporting

Prepare installation records, configuration documents, MoP/SOP, daily reports, and acceptance documents.

Keep accurate records of network changes, risks, and customer issues.

Customer Coordination

Communicate with operator engineers on site for requirement clarification, implementation planning, and acceptance coordination.

Provide technical explanation and guidance to customers during delivery.

Qualifications

Education

– Bachelor’s degree or above in Telecommunications, Electronics, Computer Science, or a related field.

Experience

– 2–5 years in telecom core network delivery, integration, testing, or on‑site support. Hands‑on with 4G/5G Core components (MME/SGW/PGW or AMF/SMF/UPF) or IMS.

Technical Skills

Core network architecture (EPC/SA/IMS).

Signaling flows: Attach/Registration, VoLTE/VoNR call flow, bearer setup.

Key protocols: SIP, DIAMETER, HTTP2, GTP, NGAP, SCTP, IP routing.

Basic experience with virtualization/cloud platforms: OpenStack/Kubernetes deployment, VM/pod operations.

Able to read logs, traces, Wireshark captures, and perform root cause analysis.

Delivery Skills

Experience preparing installation guides, MoP, LLD, and acceptance documents.

Able to work under time pressure during cutover and fault scenarios.

Strong execution discipline and on‑site troubleshooting ability.

Soft Skills

Good communication with customer engineers.

Strong teamwork, self‑driven, willingness to travel frequently.

Good English reading & basic spoken communication.

Seniority Level Mid‑Senior level

Employment Type Full‑time

Job Function Information Technology

Industry Computer and Network Security

#J-18808-Ljbffr