Senior Security Engineer

About the role

Orange Business is looking for a Senior Security Engineer to design, implement and maintain advanced security architectures across a global network. You will work with leading security technologies and collaborate with operational teams to protect customers and internal services.

Key responsibilities

• Define, implement and maintain security architectures based on F5, Palo Alto, Fortinet, Tufin, and web/mail proxies.
• Manage and optimise load‑balancing, reverse‑proxy and WAAP solutions (F5).
• Configure next‑generation firewalls (Palo Alto, Fortinet) and centralise rule management with Tufin.
• Administer web proxies and mail gateways, including anti‑spam, filtering and DLP.
• Conduct technology watch, anticipate threat evolution and participate in design, integration and migration projects.
• Write procedures, technical documentation and security standards.
• Provide Level‑3 support and resolve complex security incidents.
• Perform regular security rule audits and propose remediation plans.

Required profile

• 8‑12 years of experience in complex network and application security environments.
• Degree (Bac+5) in Computer Science, Networks or Cybersecurity, or equivalent experience.
• Relevant certifications such as F5 CTS/CA, Palo Alto PCNSE, Fortinet NSE 4‑8, Tufin TCSE; additional certifications (ITIL, ISO 27001 Lead, CISSP, CISM) are a plus.
• Strong analytical and problem‑solving abilities, excellent written communication, autonomy and rigor.

Required skills

• F5 technologies (LTM, GTM, ASM, APM)
• Palo Alto Networks NGFW and Panorama
• Fortinet (FortiGate, FortiMail, FortiWeb)
• Tufin policy orchestration
• Web‑proxy and DDoS solutions (Akamai, Cloudflare)
• Mail‑gateway security (antivirus, antispam, DLP, encryption)
• Network protocols (TCP/IP, HTTP/HTTPS, DNS, SMTP)
• Security standards (ISO 27001, NIST, CIS, GDPR)