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Gustavo De Oliveira Silva

@osgustavo

Brazil

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IT Infrastructure and Information Security (SecOps) professional with over 10 years of hands-on experience in the architecture, administration, and protection of mission-critical hybrid corporate environments.

My technical foundation spans the entire stack: from bare-metal datacenters, virtualization, and advanced networking to cloud infrastructure, automation, and identity governance. Focused on operational resilience, cost efficiency, and infrastructure modernization.

CORE COMPETENCIES & TECHNICAL STACK:

• Cloud & Automation: AWS, Microsoft Azure, Terraform (IaC), PowerShell (advanced scripting & MS Graph API integrations), and Bash.
• SecOps & Networking: Fortigate NGFW (HA, SD-WAN, Layer 7 controls, SSL/IPsec VPNs with MFA), network segmentation, CIS Benchmarks hardening, and endpoint security (Kaspersky Security Center).
• Identity & Access Management (IAM): Active Directory (forest upgrades, FSMO roles, complex GPOs), Entra ID (Azure AD Connect), and LDAPS.
• Core Infrastructure & Virtualization: VMware vSphere/vCenter, Proxmox, Hyper-V, Windows Server, Linux (Debian custom installations via preseed), and Nginx reverse proxy.
• Observability & Continuity: Zabbix, FortiAnalyzer (log centralization), GLPI (ITSM/CMDB), and enterprise backup/DR routines (Dell EMC NetWorker).

Education: MBA in Cyber Security | B.S. in Information Security.
Languages: Portuguese (Native), English (Advanced).

Experience

Work history, roles, and key accomplishments

Current

IT Infrastructure Specialist

Current

EISA

Jun 2024 - Present (2 years 3 months)

Projects & Architecture: Acted hands-on across the full lifecycle of IT projects, from topology design and technical vendor negotiation to direct solution implementation and operational team guidance.

Virtualization & Business Continuity: Actively maintained mission-critical core infrastructure, managing VMware vSphere, Hyper-V, and Proxmox clusters (virtual networks, vMotion, HA). Ensured data p

IT Infrastructure Analyst

EISA

Jun 2019 - Jun 2024 (5 years)

Virtualization & Systems: Deployed and maintained corporate virtualization clusters (VMware ESXi/vCenter, Hyper-V, and Proxmox), configuring advanced virtual networks, vMotion, and LDAP/AD integrated authentication.

Networking & Connectivity: Managed LAN, WLAN, and SD-WAN topologies (Cisco, Fortinet, and Dell equipment), structuring VLAN segmentation, IPsec tunnels, and reverse proxies (Nginx) fo

IT Infrastructure Technician

EISA

May 2018 - Jun 2019 (1 year 1 month)

Network Infrastructure: Performed the physical and logical configuration of the access layer, including the provisioning of switches, routers, and access points (Cisco, Dell, and Fortinet).

Support & Troubleshooting: Executed Level 1 and 2 technical support, resolving hardware, connectivity, and operating system incidents for hundreds of corporate end-users.

Monitoring & Operations: Actively sup