Looking for a job

Marcello Barreto

@marcellobarreto

Message

I lead carrier-grade network, telecom infrastructure, and data center modernization initiatives.

Brazil

Message

What I'm looking for

I'm looking for senior technical or engineering management opportunities where I can modernize carrier-grade networks, lead infrastructure and security projects, and combine hands-on telecom expertise with team and OKR management.

At NLT Telecom, I lead network engineering and have delivered virtual machine migrations to a new data center hub, expanded capacity through enterprise server procurement, and modernized perimeter security by migrating from Cisco ASA to Fortinet FortiGate.

I've spent more than 20 years across carrier-grade networks, Linux operations, routing, security, and telecom signaling. My work includes resolving critical SS7, STP, and HSS failures, structuring IPv4 blocks and ASN registration with LACNIC and IPv4.Global, and maintaining continuity for voice and data services.

Previously, I built NOC monitoring and incident-response processes at JET +TV+Internet, supported multi-vendor infrastructure at Claro Brasil, and managed software development and provisioning automation for ISPs at Veezor.

Experience

Work history, roles, and key accomplishments

Current

Network Engineering Manager

Current

NLT Telecom

Jun 2025 - Present (1 year 3 months)

Led the virtual machine migration project to a new data center hub, ensuring high availability and achievement of defined OKR targets. Coordinated technical evaluation and procurement of enterprise servers, and handled resolution of critical core telecom signaling failures.