Network & Security Architecture Manager Transition Manager H/F - Devoteam France

Devoteam est une entreprise de conseil en technologies, cloud, cyber, IA et développement durable. Avec plus de 11 000 collaborateurs dans plus de 25 pays, nous guidons nos clients depuis près de 30 ans dans la transformation technologique de leurs activités. En France, nous sommes 4500 Digital Architects répartis dans + de 50 tribus d'expertises et coachés par + de 400 managers experts. Nous rejoindre c'est : travailler sur des projets innovants et durables pour mettre la Technologie au service de l'humain, se certifier en continu sur les nouvelles tech du marché et partager des moments uniques entre collègues !
Pour en découvrir plus sur Devoteam, rendez-vous ici.

Role & responsibilities

Your main missions will be to:

Quickly assess the current architecture landscape, ongoing initiatives and risks, and confirm a
pragmatic 3-6 month roadmap aligned with IT and cybersecurity strategy
Lead, support and develop the team of network and security architects (4 people): clarify priorities,
allocate capacity, and ensure day-to-day management continuity
Define and drive the architecture strategy for network & security domains, including LAN, WLAN, SD-
WAN, SSE and datacenters, with a focus on immediate impact and decision-making
Provide high-level expertise and escalation support on critical topics, ensuring service stability and risk
mitigation
Coordinate efficiently with other stakeholders (cybersecurity, operations, external vendors, etc.) and
prepare an organized handover package for the permanent manager
Interim mission - objectives & expected deliverables
0-30 days: onboarding, stakeholder mapping, review of current architecture standards and in-flight
programs; identification of key risks and quick wins
30-90 days: validated priorities and roadmap; governance cadence in place; decisions unblocked on
critical topics (SSE, SD-WAN, datacenter, cloud connectivity)
Delivery: updated architecture principles/standards where needed; documented target states and
transition plans for major initiatives
Handover: complete handover pack (status, risks, decisions log, roadmap, stakeholder map, vendor
landscape) and support of the permanent manager's ramp-up

Technical context

As a manager of a technical team, hands-on and practical experience is really important. Your role will be to
lead a team of architects while having a strong understanding of all key concepts:
Enterprise network architectures (WAN, LAN, WLAN, SSE, datacenters)
SD-WAN - Fortinet
SSE - Zscaler
Firewalling - Checkpoint, Palo Alto, Fortinet
WLAN/LAN - Cisco Meraki
Datacenter - Juniper LAN, Cisco LAN, F5
Cloud networking concepts - AWS in particular

Experience & soft skills

10+ years of experience in Enterprise networking, including significant architecture experience and
proven experience in team management or technical leadership
Proven ability to step into complex organizations quickly (interim/transition, consulting or turnaround
contexts) and deliver within short timelines
Capability to interact with multiple stakeholders in an international environment; ability to challenge,
arbitrate and make decisions
Strong prioritization skills and pragmatic approach to balance long-term architecture principles with
operational constraints
Fluent English (written and spoken)