Senior Core Network Engineer – IP/MPLS & 3GPP (EPC) at Inetum2

We are looking for a highly Senior Core Network Engineer – IP/MPLS & 3GPP (EPC) to provide specialized technical services in critical network environments. The goal of this role is to reinforce the operation, evolution, and resilience of the infrastructure, ensuring high standards of availability, security, and alignment with network engineering best practices. This position requires a high level of autonomy, strong advanced troubleshooting capabilities, and the ability to support technical decision‑making in high‑complexity and mission‑critical scenarios. Key Responsibilities: Data Center Network Infrastructure Management • Operation, monitoring, and continuous evolution of data center network infrastructures • Technical support for high‑availability and resilient architectures • Execution of technical tests and connectivity validations in production and pre‑production environments • Administration and support of unified communications solutions, namely Cisco CallManager • Management and operation of access control and identity platforms, including Cisco ISE • Ensuring the continuity, performance, and quality of supported servicesNetwork Security and Traffic Control • Creation, modification, and validation of firewall rules in Cisco, Fortinet, and Check Point environments • Impact analysis, risk mitigation, and support for security requirements • Support in the resolution of network security incidentsTransport and Backbone Networks • Operation and monitoring of IP/MPLS networks • Technical support for DWDM infrastructures • Analysis of link performance, stability, redundancy, and overall backbone qualitySpecialized Technical Support and Advanced Troubleshooting • Diagnosis and resolution of complex network incidents • Execution of tests, technical trials, and high‑criticality validations • Coordination with internal teams and technology vendors, particularly in NOKIA and CISCO environments • Technical support for decision‑making in critical and high‑pressure operational contexts