Mathieu Mansanarez

● 𝙉𝙚𝙬 𝙙𝙖𝙩𝙖 𝙘𝙚𝙣𝙩𝙚𝙧 𝙥𝙧𝙤𝙜𝙧𝙖𝙢: Led IP and Core architecture validation for deploying 5GC/IMS/VoLTE in a new data center; reviewed L2/L3, security zones, capacity models, and HA/DR patterns; gated design/acceptance and cutover criteria. ● 𝙈𝙤𝙗𝙞𝙡𝙚 𝘾𝙖𝙡𝙡 𝙍𝙚𝙘𝙤𝙧𝙙𝙞𝙣𝙜 (𝙈𝘾𝙍) / 𝙤𝙥𝙚𝙧𝙖𝙩𝙞𝙤𝙣𝙖𝙡 𝙧𝙚𝙨𝙞𝙡𝙞𝙚𝙣𝙘𝙚: Led hardening and the operational model for the MCR platform (Crealog) used by banking clients: privileged-access controls, logging/retention, inventory and segmentation; coordinated stakeholders to meet regulatory timelines in line with DORA-style operational resilience. ● 𝙎𝙚𝙧𝙫𝙞𝙘𝙚 𝙙𝙚𝙨𝙞𝙜𝙣 & 𝙚𝙣𝙖𝙗𝙡𝙚𝙢𝙚𝙣𝙩: Co-designed new APNs (e.g., dedicated enterprise/OSM-type use cases) and launched a monthly roaming pass by implementing PCRF policy rules (eligibility, QoS profiles, time-window enforcement) integrated with CRM flows; ensured tracking via executive dashboards ● 𝙋𝙚𝙤𝙥𝙡𝙚/𝙊𝙆𝙍: Managed a team (4 FTE + 2 interns); set OKRs and ran weekly reviews in Jira; mentored staff, recruited an IMS/VoLTE expert, and enforced post-mortem standards; maintained documentation quality and project archiving in Confluence. ● 𝙍𝙪𝙣 𝙜𝙤𝙫𝙚𝙧𝙣𝙖𝙣𝙘𝙚: Oversaw quality KPIs/SLAs and roaming health (IR.24 readiness; inbound/outbound dashboards), escalated with partners when thresholds drifted; ensured BCP/DRP evidence and auditability.

● 𝘿𝙚𝙡𝙞𝙫𝙚𝙧𝙮 & 𝙪𝙥𝙜𝙧𝙖𝙙𝙚𝙨 (𝙘𝙡𝙤𝙪𝙙-𝙣𝙖𝙩𝙞𝙫𝙚 𝙘𝙤𝙧𝙚): Contributed to rollouts and version upgrades of 5GC NEs and IMS (ePDG/CSCF); executed acceptance tests, rollback plans, and production cutovers on EPC/IMS interfaces; supported cloudification/NFVI migrations (FusionSphere/VMware; containers). ● 𝘾𝘿𝙍/𝙆𝙋𝙄 𝙤𝙗𝙨𝙚𝙧𝙫𝙖𝙗𝙞𝙡𝙞𝙩𝙮 & 𝙖𝙡𝙚𝙧𝙩𝙞𝙣𝙜: Implemented InfluxDB/Grafana dashboards and Talend/PostgreSQL pipelines for home and roaming CDRs; built alerting rules and correlation (SIP, Diameter, GTP) to reduce MTTR and pinpoint root causes; integrated EXFO probes for real-time visibility. ● 𝙍𝙤𝙖𝙢𝙞𝙣𝙜 𝙤𝙥𝙚𝙧𝙖𝙩𝙞𝙤𝙣𝙨 (𝙞𝙣𝙩𝙚𝙧-𝙋𝙇𝙈𝙉): Drove day-to-day operations with roaming partners; validated interconnects and troubleshooting with Orange and other operators (IR.24 scope); monitored VoLTE roaming readiness and KPIs. ● 𝙎𝙚𝙘𝙪𝙧𝙞𝙩𝙮 & 𝙧𝙚𝙨𝙞𝙡𝙞𝙚𝙣𝙘𝙚 𝙞𝙣 𝙤𝙥𝙚𝙧𝙖𝙩𝙞𝙤𝙣𝙨: Executed Business Continuity Plan and Disaster Recovery Plan drills for core functions (restart prioritization, config backups), ensured evidence for audits (AMSN/SSI). ● On-call rota to provide network support for mobile core network services outside of office hours

+ Actively participated in the rollout of 5G in Monaco, contributing to its goal of becoming the first country to achieve complete 5G coverage. + Focused on enhancing 4G data performance, striving to secure the top position in the 5Gmark ranking. + Led comprehensive KPI monitoring efforts, encompassing monitoring, detection, in-depth analysis, efficient resolution, and strategic optimization. + Managed trouble tickets for VIP customers, ensuring prompt resolution and maintaining a high level of customer satisfaction.

+ Played a vital role in the deployment of 3G/4G radio sites, contributing to the seamless connectivity during major Monaco events such as the prestigious Monaco Grand Prix, Yacht Show, and Rolex Masters. + Actively participated in groundbreaking trials for innovative projects, including achieving impressive speeds of 1Gbps through Carrier Aggregation 4G++, and implementing Multi-Operator Core Network (MOCN) solutions. + Successfully achieved KPI objectives, including retainability with a Call Drop Rate below 0.5%, CSSR accessibility above 99%, and mobility HO above 98%. + Conducted in-field tests to validate tuning

+ Dimensionning of radio network (LAC, Paging with Constellation software) + Technical support for subsidiaries

+ Performance management of 4G/LTE for Île-de-France region : - Traces analysis, management of QoS with KPI - Follow-up of radio campaigns (ANR, Mobility, Idle ...) ; - Field tests with Nemo Handy tool + Study of device type + Improvement of technician/engineer interface

+ Managed the workload scheduling and task allocation for field technicians. + Ensured the optimization of intervention activities to maximize efficiency. + Adhered to contractual commitments with businesses, professionals, and residential clients. + Addressed and incorporated safety constraints in all operational planning.

Apprenti élève ingénieur

Professional training in the field of Data Science