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Tech Lead Terminaux Mobiles & Réseaux 4G/5G - Paris - H/F

Paris, IDF, fr💼 Full-time🗓 2026-06-29 → 2026-09-26

Core

Technical lead for mobile devices ensuring the interface between Free, smartphone manufacturers, and chipset makers to guarantee the best experience for subscribers on 4G/5G networks.

Role type

Senior technical lead (mobile devices & networks)

Builds

Mobile network experience and device integration for Free subscribers

Domain

Telecom / Mobile Networks / Device Engineering

Deliverable

production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work

Required skills

Mobile network architecture (4G/5G/IMS/VoLTE/VoWiFi/eSIM), protocol analysis (SIP/Diameter/NAS/RRC), Wireshark, complex incident investigation, cross-functional coordination, roadmap anticipation

Preferred skills

Chipset manufacturer interaction, international partner representation, network measurement campaign analysis

Technologies

4G, 5G, IMS, VoLTE, VoWiFi, eSIM, SIP, Diameter, NAS, RRC, Wireshark

Responsibilities

Ensure technical interface between Free and device manufacturers (OEMs), pilot technical analyses of device performance on the Free network, coordinate complex investigations with Core Network and Radio teams, represent Free in technical exchanges with international partners, anticipate impact of device roadmap evolutions on Free services

Seniority

Senior, hands-on IC with coordination responsibilities

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