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Aurélien VillarroyaAV

Aurélien Villarroya

WAF & F5 BIG-IP Infrastructure Security Expert

€350/day
Saint-Quentin-en-Yvelines, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Aurélien

F5 BIG-IP & WAF Expert, I undertake assignments on the critical infrastructures of major banking and industrial clients, and IT departments – in build, run, or architecture.

Certified F5-201, I master the entire BIG-IP stack (ASM, LTM, APM, GTM) as well as perimeter security environments (Palo Alto, Fortinet, Cisco ASA, and web proxies).

I have secured the infrastructures of BNP Paribas, Crédit Agricole CIB, BPIFrance, Renault, and other major clients on sensitive perimeters including AWS cloud.

Autonomous from day one, I handle complex migrations, WAF environment takeovers, and skills transfer to internal teams.
Available quickly, Île-de-France and remote.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Saint-Quentin-en-Yvelines (up to 50km)

Experience

  • Crédit agricole
    F5 BIG-IP (APM/ASM) Expert
    January 2026 - Today (5 months)
    78280 Guyancourt, France
    Challenge: Build and L3 support for the F5 mobility VPN infrastructure for over 25 group clients. Takeover of the internal WAF environment, expertise on the exposed part.
    F5 APM F5 LTM Web Application Firewall (WAF) PKI Firewall
  • Renault — Industrie automobile,
    F5 BIG-IP Expert
    February 2025 - November 2025 (9 months)
    78280 Guyancourt, France
    Challenge: Migration of the F5 infrastructure to new LTM clusters for the entire Renault IS.
    • Led the migration of LTM configurations to new clusters, covering over 200 virtual servers and application pools.
    • Analyzed and prepared existing configurations, identifying optimization points before migration.
    • Ensured troubleshooting of post-migration incidents, maintaining maximum availability.
    Environment: F5 BIG-IP LTM, cluster migration, iRules scripting
    F5 BIG-IP (LTM,ASM,APM,GTM) Troubleshooting
  • BPIFrance — Banque publique d'investissement,
    WAF Security Expert
    July 2022 - March 2024 (1 year and 8 months)
    Maisons-Alfort, France
    Challenge: Application security and WAF posture reinforcement across the entire BPI IS.
    • Deployed and maintained WAF (F5 ASM) and antibot policies for over 45 critical business applications.
    • Designed advanced LTM and APM configurations, ensuring high service availability.
    • Deployed Fortinet and Cisco ASA firewall configurations on the network perimeter.
    • Wrote technical reference documentation and ensured skills transfer to network and security support teams.
    Environment: F5 BIG-IP (LTM, ASM, APM), Fortinet FortiGate, Cisco ASA
    F5 BIG-IP (LTM,ASM,APM,GTM) Web Application Firewall (WAF) Amazon Web Services Fortinet Skills Transfer

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Education

  • F5 Certified Administrator, BIG-IP (F5-CA)
    2021
    F5 Certified Administrator, BIG-IP (F5-CA)
  • TMOS Administration
    TMOS Administration

Skill set

Categories