Gustavo - Systems Infrastructure Engineer

Experiencia demostrada en BGP.

Experiencia demostrada en OSPF.

Experiencia demostrada en VLANs.

Experiencia demostrada en TCP/IP.

Experiencia demostrada en Huawei S620/S220.

Own and directly operate enterprise network and infrastructure services supporting approximately 200 users across headquarters and a connected branch, serving as the N4 escalation point for complex connectivity, security and availability incidents.. Designed and executed the end-to-end migration of the corporate network core to a redundant Huawei S620/S220 architecture, using fiber uplinks with SFP and QSFP28 connectivity and delivering a near-transparent production cutover.. Administer a 6+ switch multi-vendor environment across Huawei, Dell PoE, TP-Link and UniFi/Ubiquiti, working with VLAN segmentation, LAN/WAN/WLAN, BGP in production, an OSPF-based routing environment, VPN connectivity and IP-pool routing.. Manage Palo Alto Networks firewalls in production and staging, configuring security policies, NAT, VPN and high availability directly on the appliances and troubleshooting connectivity and policy behavior.. Take end-to-end ownership of infrastructure incidents, coordinate with internal teams and vendors, document solutions, and support Windows/Linux, VMware and physical infrastructure when network issues cross technology boundaries.. Develop Ansible-based modules and automation routines for VM environment updates; use Zabbix and Grafana to identify failures and performance issues proactively and improve repeatability of operational tasks.

Developed, maintained and supported corporate applications in C# and legacy Delphi, managing changes between testing and production environments.. Administered SQL Server databases, performing queries, maintenance routines and operational support for data availability and integrity.. Supported LAN/WLAN infrastructure and configured/monitored switches, routers and firewalls using TCP/IP and OSI networking fundamentals.. Performed structured cabling, PABX/VoIP support, hardware upgrades and maintenance on workstations and servers, combining physical infrastructure work with troubleshooting.. Served as an N1/N2 Helpdesk focal point, tracking incidents through resolution, respecting SLA targets and documenting repeatable solutions.