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Expert Investigation E2E – Performance Réseau - Paris - H/F

Paris, IDF, fr💼 Full-time🗓 2026-07-29 → 2026-09-26

Core

End-to-end investigation expert for complex network incidents impacting mobile and fixed services, focusing on optimizing technical KPIs and perceived Quality of Experience (QoE) for subscribers.

Role type

Senior Network Performance Investigation Engineer (4G/5G)

Builds

Production network performance improvements, automated analysis tools, and advanced ML models for root cause analysis.

Domain

Telecommunications, Mobile Networks (4G/5G), Network Performance Optimization

Deliverable

production ML models | dashboards & analysis | infrastructure

Required skills

End-to-end network investigation, Root Cause Analysis (RCA), Protocol analysis, Network KPI analysis, 4G/5G architecture knowledge, Troubleshooting tools (Wireshark, Tems, XCAL), Python for automation, Data analysis

Preferred skills

Machine Learning, Artificial Intelligence, Network benchmarking, ARCEP measurement analysis, Radio network optimization

Technologies

4G, 5G, IP architectures, Wireshark, Tems, XCAL, Python

Responsibilities

Investigate complex incidents and performance degradations across mobile and fixed services; Analyze network KPIs, protocol traces, and field measurements to identify root causes; Validate new services and features before production; Lead performance improvement plans with RAN, Transport, Core, and vendor teams; Optimize 4G/5G radio network parameters and features; Design analysis, correlation, and automation tools; Leverage network data (KPI, traces, crowdsourcing) to enhance performance and user experience; Develop advanced analysis models and decision-support algorithms using ML/AI.

Seniority

Senior, hands-on IC

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