Fortinet

Delivers integrated cybersecurity via security fabric

Senior Network Security Engineer

Network Engineering & AdministrationConfirmed live in the last 24 hours

Full-timeNo salary listed

About the Job

Requirements

At least 8 years of hands-on experience with Layer 2 switching, IP routing, and protocols including BGP, OSPF, MPLS, VRRP, STP, GRE, IPsec, and SNMP.
Experience with large-scale BGP, including public autonomous system numbers, peering, route arbitration, and Internet Routing Registries.
At least 8 years of network security experience with access control, threat management covering vulnerabilities, malware, advanced persistent threats, and botnets; SSL inspection; content categorization; and security and risk frameworks.
At least 5 years of experience administering RHEL/CentOS and Ubuntu.
Experience with web servers and SQL databases; LDAP and similar systems are also mentioned.
Ability to work independently in a ticket queue environment and maintain documentation.
Fluency in English is essential.
Must be prepared to work one weekend day and participate in on-call coverage.

Responsibilities

Maintain logical and physical network architectures across datacenter environments.
Build and optimize network monitoring and observability systems.
Develop automation to detect, mitigate, and remediate network events and solve problems.
Perform root cause analysis and drive issues to resolution.
Maintain documentation and operational consistency across the infrastructure.
Contribute to technical discussions and long-range capacity planning.
Provide support to internal teams as a top-tier escalation point for production issues.
Participate in a 24x7 NOC on-call rotation and provide some staffed weekend coverage.

Desired Qualifications

Fortinet product experience is strongly preferred.
OpenStack experience is a plus; RHOSP/RHOSO is preferred.
Cloud experience with AWS, GCP, or Azure.
Experience with infrastructure-as-code tools such as Terraform or Ansible.
Load balancing and DDoS mitigation at scale.
Certifications such as NSE7/8, CCIE R&S, RHCSA, or RHCE.
Business-level proficiency in the local language is highly desirable.

Office based in our Sophia Antipolis (Valbonne, France) office 4 days per week or Kelsterbach (Frankfurt Germany)

Senior Network Security Engineer

About the Role

We're seeking an experienced network security engineer to build, operate, and scale our SASE architecture, encompassing both logical and physical infrastructure managed through Infrastructure as Code leveraging both Fortinet products and Linux (OpenStack) systems. You'll work across network architecture, security operations, and automation-designing solutions, driving incident resolution, and implementing systemic improvements to prevent recurrence.

This role includes participation in a 24x7 NOC on-call rotation and requires some staffed weekend coverage.

What You'll Do

Maintain network architectures across datacenter environments (logical & physical)
Build and optimize network monitoring and observability systems
Develop automation to detect, mitigate, and remediate network events and solve problems
Perform root cause analysis and drive issues to resolution
Maintain documentation and operational consistency across the infrastructure
Contribute to technical discussions and long-range capacity planning
Provide support to internal teams as a top-tier escalation point for all production issues

What You Bring

Networking (8+ years)

Expert-level hands-on experience with L2 switching, IP routing, and protocols (BGP, OSPF, MPLS, VRRP, STP, GRE, IPsec, SNMP)
Large-scale BGP experience: public ASNs, peering, route arbitration, IRRs

Network Security (8+ years)

Access control, threat management (vulnerabilities, malware, APTs, botnets)
SSL inspection, content categorization, security/risk frameworks
Fortinet product experience strongly preferred

Linux & Infrastructure (5+ years)

Administration of RHEL/CentOS, Ubuntu
Web servers, SQL databases, LDAP, etc.
OpenStack experience a plus (RHOSP/RHOSO preferred)

General

Strong troubleshooting instincts and documentation habits
Comfortable working independently in a ticket queue environment
Clear communicator who can context-switch between deep technical work and stakeholder updates

Nice to Have

Cloud experience (AWS, GCP, Azure)
Infrastructure-as-code tools (Terraform, Ansible)
Load balancing and DDoS mitigation at scale
Certifications: NSE7/8, CCIE R&S, RHCSA/RHCE

Fluency in English essential + business level of local language highly desirable

Must be prepared to work 1 weekend day and oncall infrequently

#LI-NC1

About the Company

Fortinet

Delivers integrated cybersecurity via security fabric

Fortinet provides cybersecurity solutions for organizations with an integrated security approach. Its core offering, the Fortinet Security Fabric, connects firewalls, endpoint protection, intrusion detection, and secure SD-WAN so these tools share threat intelligence and policy controls. The company differentiates itself with a wide, interoperable security stack that spans network, endpoint, cloud, and threat intelligence, enabling centralized management and consistent security across environments. Fortinet aims to help organizations protect digital assets across on-premises, remote, and cloud settings through scalable security and ongoing subscription services.

Company size: 10,001+
Company stage: IPO
Headquarters: Sunnyvale, CA
Founded: 2000

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