Davi Castro Jorge da Costa

Audicom Telecom & Audicom Tecnologia · Uberlândia, Brazil

Support agent → Developer → Deputy Supervisor

• Built NexusAtlas, a web system for field service orders in JavaScript and Firebase, syncing data in real time between the office and field technicians with no server to maintain.
• Built Audicom Hub, an internal portal for tickets, maintenance, a knowledge base and technical patrols, with three-level authorization enforced in Firestore security rules and automatic drafts for field use.
• Develop Python and C# software that integrates biometrics and facial recognition with turnstile access control.
• Run VMware ESXi servers, WireGuard VPN tunnels and MikroTik, Cisco, Ubiquiti (UniFi/UISP), Datacom, V-SOL and TP-Link equipment, monitored with Grafana and Zabbix.
• Shipped the company website, an in-house speed test (LibreSpeed) and the customer service pages reached through QR codes on company vehicles and materials.
• Rolled out an LMS platform with single sign-on over SSO (SAML/OIDC) and supervise the NOC, HelpDesk and network operations teams, organising the technical request queue.

Algar Telecom

Agent → Premium team → Wholesale · Enterprise accounts

• Supported the carrier's wholesale segment in English, serving international customers such as Verizon, BT and China Telecom.
• Provided advanced technical support, driving critical infrastructure incidents through to resolution.
• Tracked customer infrastructure in Grafana and Zabbix.

Web pra Você · own business

• Built websites for small and mid-sized businesses, covering proposal, design, development and launch.

Callink · Bradesco operation

• Customer service using structured questioning to understand and resolve complex requests.