Miguel Gonçalves — Computer Engineer

About

I am a Computer Engineer with two decades of hands-on experience designing, deploying and securing infrastructure. I work across system administration, network design, automation (scripting and IaC), and embedded systems. I enjoy turning complex problems into reliable, maintainable solutions and mentoring junior engineers.

Skills

Linux & Servers95%

Networking & Security90%

Automation & DevOps (Ansible, Docker)85%

Embedded & IoT (Raspberry, Arduino)75%

Programming (Python, Bash)88%

Experience

2018 — Present

Senior Systems Engineer — DCM (project)

Design and maintain secure services (DNS, Apache, Mail), virtualization (ESXi), firewalls (OPNsense), monitoring (Nagios) and automation.

2010 — 2018

Systems & Network Engineer — InforAbreu (simulated environments)

Built and tested networked environments, performed security assessments, and implemented high-availability systems.

2005 — 2010

IT Specialist — Various roles

Early career roles covering Linux administration, support, and small-scale project deployments.

Selected Projects

Secure DNS & Mail

Design and deploy DNS with DNSSEC, secondary servers, ACLs and a combined Mail server with secure relay and spam controls.

Virtualization & DMZ

ESXi-based lab with OPNsense firewall splitting LAN & DMZ; lab used for student and team testing.

Web & Authentication

Apache with VirtualHosts (web.dcm, login.dcm), HTTPS, HTTP->HTTPS redirection and authentication for internal apps.

Monitoring & Automation

Nagios-based monitoring combined with Ansible playbooks for repeatable deployments and configuration drift prevention.