Manoel Dias Martins Jr

Network Security Engineer

20+ years across systems, networking and cybersecurity β€” from Windows Server & Active Directory environments to enterprise network security at Fortinet. Based in Lisbon, Portugal.

  • πŸ“ Vila Franca de Xira, Lisbon, Portugal
  • 🏒 Fortinet
  • πŸŽ“ FAESA

01. Professional Experience

  1. Cyber Security Engineer

    Current

    Fortinet Β· Full-time

    Nov 2022 β€” Present Β· Lisbon, Portugal

    Deliver network security engineering and support across FortiGate, FortiManager and SD-WAN deployments, applying enterprise firewall administration, threat prevention and secure networking best practices for global customers at a leading cybersecurity vendor. Fortinet NSE-certified across secure networking and cybersecurity fundamentals, with hands-on Linux systems experience.

    • Network Security
    • FortiGate
    • FortiManager
    • SD-WAN
    • Enterprise Firewall
    • Fortinet NSE
    • Linux
    • Technical English
  2. Network Administrator

    New Tecnologia Β· Full-time

    Sep 2020 β€” Oct 2022 Β· Cachoeiro de Itapemirim, Brazil

    Deployed, configured and troubleshot enterprise network infrastructure (Huawei, Mikrotik) supporting ISP and Autonomous System environments. Implemented VLAN segmentation, STP, PPPoE, OSPF and iBGP routing to strengthen network performance, availability and security. Completed Nic.br's Best Practices for Autonomous Systems program, applying ISP-grade hardening standards.

    • VLAN
    • STP
    • PPPoE
    • OSPF
    • iBGP
    • Huawei
    • Mikrotik
    • Network Troubleshooting
    • ISP / AS Operations
  3. Chief Executive Officer

    Manoel Martins Tecnologia Β· Self-employed

    Mar 2020 β€” Oct 2022 Β· Cachoeiro de Itapemirim, Brazil

    Founded and led an independent IT services practice, delivering systems and network administration, technical support and infrastructure consulting directly to business clients β€” owning operations, client relationships and service delivery end-to-end.

    • IT Consulting
    • Client Support
    • Systems Administration
    • Network Administration
    • Business Operations
  4. System Administrator

    Prodest Β· Full-time

    Jul 2008 β€” Jul 2017 Β· EspΓ­rito Santo, Brazil

    Administered 5 Active Directory forests with 2–3 Domain Controllers each, ensuring identity, access and infrastructure reliability across a public-sector environment. Designed and implemented new Active Directory domain architectures. Microsoft Certified Systems Administrator (MCSA) and Systems Engineer (MCSE); presented internally on Windows Server 2003 vs. 2008 migration strategy.

    • Active Directory
    • Windows Server
    • Domain Controllers
    • MCSA
    • MCSE
    • IT Infrastructure
    • Public Sector
  5. System Administrator

    R7 Tecnologia Β· Full-time

    Jan 2004 β€” Jul 2008 Β· EspΓ­rito Santo, Brazil

    Administered Microsoft Windows Server environments and managed a Linux-based perimeter firewall (IPCop), laying the technical foundation for a long-running career in network security and IT infrastructure. Provided technical support and ensured system reliability for end users and business operations.

    • Windows Server
    • Linux
    • IPCop Firewall
    • Network Security Fundamentals
    • Technical Support

02. Skills

Security & Networking

  • Network Security
  • Fortinet
  • FortiGate
  • FortiManager
  • SD-WAN
  • Enterprise Firewalls
  • VLAN / STP
  • OSPF / iBGP
  • PPPoE
  • Huawei
  • Mikrotik

Systems Administration

  • Windows Server
  • Active Directory
  • Domain Controllers
  • DNS
  • DHCP
  • VMware ESX
  • Linux
  • Desktop Support

Automation & DevOps

  • Python
  • C
  • Bash
  • Docker
  • Kubernetes
  • Ansible

Platforms

  • Debian
  • Ubuntu
  • Red Hat
  • Windows
  • Windows Server
  • Apache

03. Certifications

Sourced from Credly and LinkedIn. Most expired credentials omitted; expired badges are labeled accordingly.

Fortinet Certified Professional – Secure Networking badge FCP – Secure Networking Expires Sep 12, 2027
NSE 6 Certified in Secure Networking badge NSE 6 – Secure Networking Expires Sep 12, 2027
NSE 4 Certified in FortiOS badge NSE 4 – FortiOS Expires Jul 24, 2028
Problem-Solving and Decision-Making, Post-Sales L2 Essentials badge Problem-Solving & Decision-Making Issued May 2, 2024
Communication, Post-Sales L2 Communication Skills Essentials badge Communication Skills Issued Aug 2, 2023
  • FortiGate 7.4 AdministratorIssued Sep 12, 2025
  • FortiManager 7.4 AdministratorIssued Sep 5, 2025
  • SD-WAN 7.2 ArchitectIssued May 15, 2024
  • Customer Centricity β€” Post-Sales L2 EssentialsIssued Aug 2, 2023
  • Enterprise Firewall 7.0 AdministratorIssued Mar 29, 2023
  • FortiGate 7.0 AdministratorIssued Feb 8, 2023
  • Certified Fundamentals β€” CybersecurityExpires Sep 12, 2027
  • NSE 1 Certified in CybersecurityExpires Jul 24, 2028
  • NSE 2 Certified in CybersecurityExpires Jul 24, 2028
  • Getting Started in Cybersecurity 1.0Issued Nov 4, 2022
  • Introduction to the Threat Landscape 1.0Issued Nov 3, 2022

04. Get in Touch

Interested in talking about network security, systems administration or infrastructure automation? Reach out through any of the channels below.