Freelancer profile translated to English.
Back to original languageAbout Allex
I am Allex Oliveira, a network and security engineer with 15 years of experience in critical industrial environments in Brazil and France.
I currently work as a senior technical consultant on industrial network and cybersecurity projects (CISCO, Palo Alto firewall, FortiManager and Analyzer, ELK SIEM, threat hunting, Fortinet firewall, OT/IT network segmentation).
Specialties:
OT/IT Secure Network Architecture
Fortigate, Palo Alto, Cisco WLC/ISE
SIEM with ELK stack in industrial environments
Threat hunting, hardening, and incident response.
If you are a security manager, consultant, or technician and want to improve the quality of your operations through structure and method, contact me for more information.
Portuguese
Native or bilingual
English
Fluent
French
Fluent
Can work on-site
Aix-en-Provence (up to 50km), Marseille (up to 50km)
Experience
- Team-iTNetwork and Security Engineer (Consultant at Naphtachimie)CHEMICALDecember 2023 - Today (2 years and 6 months)Aix-en-Provence, FranceTechnical consultant in network and security in a petrochemical industrial environment in Lavera, Aix-Marseille, responsible for:OT network segmentation projects with VLANs, HSRP, and VRFConfiguration of Fortigate, Paloalto, CISCO, and PRA firewalls with high availability (HA)Wi-Fi security integration with Cisco WLC and Cisco ISEVulnerability analysis, threat hunting, and incident response.Implementation of a SIEM (ELK stack) for industrial network monitoringIn addition to technical services, I document and standardize each project, focusing on creating a technical framework that serves as the foundation for my specialized consultancy.
- Hospital Paulo de TarsoNetwork and Security ConsultantHEALTH AND WELLNESSMarch 2023 - July 2023 (4 months)Belo Horizonte, BrazilNetwork security audit for approximately 100 computers to check software versions, enabled service ports, and security issues using tools like Nmap and Nessus. Consultancy for the creation of a new TCP/IP LAN network segmented into VLANs for 300 PCs using HP/Aruba switches, Fortigate firewall, VPN, and 60 Ubiquiti Unifi WiFi access points. Client: Paulo Tarso Hospital – Brazil.
- TCSField Services EngineerRAW MATERIALS INDUSTRYAugust 2022 - November 2022 (4 months)Haubourdin, France• Freelance mission in an industrial environment, restricted, standardized, and extremely controlled. Plant: Cargill – Haubourdin, France.• Identification and replacement of the CISCO switch park in conjunction with the network team.• N2 support in French and English, coordination with remote teams for network and desktop support.
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Education
- MBA BAC+5, Computer and Information Systems Security/InformationCentro Universitário UNA2017Analyse de la vulnérabilité et tests d'intrusion. Outils de sécurité : (UTM, NGFW,WAF). Systèmes de détection et de prévention des intrusions (IDS/IPS), gestion et corrélation des événements de sécurité (SIEM), Technologies et outils pour la sécurité de l'information : DLP (Data Loss Prevention) , IAM (Identity and Access Management), Multi Factor Authentication. Gestion de projet. ISO 27001.
- Technicien Supérieur Systèmes et Réseaux – CEC Niveau 5, Bac+ 2Centro Universitário UNA2009Design, implémentation et gestion de réseaux informatiques Windows et Linux (LAN, MAN et WAN), réseaux TCP/IP, sécurité des réseaux Firewall, WAF, Modèle OSI 7 layers, routeurs et trafic reseau.
Certifications
- NSE3 Network SecurityFortinet Certification validation number: SP3kZFpZIJ2023