Seif ROUISSI

– Validated new Cisco Core Data solutions, including MME, SPGW, Control & User Plane Separation (CUPS), ReCUPS, 5G SA, and IPv6. – Performed troubleshooting of production incidents and tested new patches and fixes in the test environment. – Adapted test strategies according to the solution architecture. – Tracked vendor support tickets and validated corrective fixes prior to deployment.

– Led projects related to access systems and controllers. – Reviewed Method of Operations (MOPs) and assessed operational risks and impacts. – Collaborated with Engineering, Operations, Design, and Solutions teams, as well as external operators (Bouygues Telecom, Orange, Free Mobile). – Planned operational scheduling, coordination checkpoints, and synchronization milestones. – Chaired project meetings, coordinated internal and external stakeholders, and communicated project-related events and updates.

– Packet Switching and Signaling Core Network new Node Validation and Integration – Core Network PS Troubleshooting – PS Network technical architecture Study: New NGN Network Study, Actual PS and Signaling network topology evolution, New PS and Signaling Features Study and validation, PS and Signaling network Road MAP. – PS Network Engineering: New PS and Signaling node DB Implementation, New PS and Signaling node integration (new functionality or technology), PS and Signaling DB Optimization. – PS Core Network Procedures Building – PS Trials – IP based Network engineering & architecture evolution. – PS Core Network flows optimization – Interfaces usage optimization – PCRF policy design and validation – VAS design/integration in PS Core and services flows – WIFI integration and deployment: Solution validation

– Audit CS + PS Core Network nodes: MSS \ MGW \ STP \ SGSN \ GGSN \ PCRF ... – Optimization of core Network KPI (CS+PS). – Evaluation of traffic increase and Impact, for overload prevention, during events. – Monitoring and Validation of critical operations on Core network nodes (CS+PS). – Monitoring of traffic on POIs, Traffic analysis and trending. – Troubleshooting Network Incidents and dysfunctional behavior. – Creation of performance guidelines for SGSN, GGSN and PCRF

– Maîtrise des services de bout en bout (IN, VAS, Billing). – Troubleshooting des problèmes réseaux.