Network and Security Architect/Expert

RATP Dev USA

Architecte réseau et sécurité modernisant les infrastructures critiques de la RATP, acteur majeur du transport urbain. Conception stratégique, expertise production et évolution des solutions Cloud et sécurité.

Posted 8/25/2026full-timeNoisy-le-Grand • 🇫🇷 FranceMid-LevelSenior💰 €60,000 - €70,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in defining technical and strategic vision for network and security infrastructures, leading transformation projects, and providing expert support for production environments. Proficient in next-generation security solutions, network virtualization, and automation tools.

Highest-signal resume keywords

Network Infrastructure TransformationNext-Generation Security SolutionsMicro-Segmentation SolutionsInfrastructure as CodeCisco Networking Solutions

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Network ExpertNetwork ArchitectAnsibleTerraformIPsec EncryptionCheck PointFortinetPalo AltoVMware NSXNutanix Flow

Tools & Technologies

Zscaler ProxyF5 WAFUbikaCisco NexusCisco Fabric VXLAN

Certifications & Qualifications

Master’s DegreeFrench B3 Criminal Record Certificate

Industry Keywords

Network VirtualizationCloud TechnologiesProof-of-Concept (PoC)Technical Analysis ReportsOn-Call Rotation

Tech Stack

Tools & technologies

AnsibleCloudFluxTerraformVMware

About the role

Key responsibilities & impact

Define the medium- and long-term technical and strategic vision for network and security infrastructures
Lead network and security infrastructure transformation projects in a critical production environment
Support IT projects and address their specific networking requirements
Provide expert support for production network infrastructures
Assess new technical solutions through proof-of-concept (PoC) initiatives
Prepare technical and financial analysis reports

Requirements

What you’ll need

Master’s degree from an engineering school or university
5 years of experience as a Network Expert or Architect
Strong command of next-generation security, monitoring, and filtering solutions: Check Point, Fortinet, Palo Alto
Strong command of micro-segmentation solutions, including VMware NSX or Nutanix Flow
Knowledge of Cloud technologies, network virtualization, and Infrastructure as Code
Strong command of Ansible and Terraform
Knowledge of web traffic security solutions: Zscaler proxy, F5 WAF, or Ubika
Strong command of IPsec network traffic encryption solutions
Strong command of Cisco networking solutions, particularly Cisco Nexus and Cisco Fabric VXLAN
Participation in the on-call rotation
A French B3 criminal record certificate is required to initiate the hiring process
Fitness for the role will be assessed during the mandatory occupational health examination

Benefits

Comp & perks

Up to 9 weeks of annual leave and reduced working time (RTT) days
Free travel on the RATP network, with enhanced coverage of transportation costs in and outside the Île-de-France region
Employer-funded health insurance covering 70% of the cost
Company-funded supplementary insurance coverage at 100%
Free access to medical centers and numerous specialists
Employee savings plans with employer matching contributions
Sports, cultural, and leisure programs offered by the Works Council (CSE)
Career development opportunities within the Group, including internationally
Performance-based variable compensation
Profit-sharing plan
Fixed salary paid over 13 months
2 to 3 remote-working days per week