Senior systems administrator with 14+ years in IT infrastructure: the last 11 running infrastructure and operations end to end for a company in Brazil, before that corporate support and server roles in Lisbon and Rio de Janeiro.
I keep servers secure, monitored and backed up, and I like turning that work into small, well-tested tools.
What I work with
- Servers: Linux (Debian, Ubuntu), Windows Server, Active Directory, Microsoft 365
- Virtualization: Proxmox VE, VMware ESXi, Hyper-V
- Networking & security: firewalls (Sophos), VPN, VLANs, UniFi, Cisco, Cloudflare, DNS, email authentication (SPF / DKIM / DMARC)
- Monitoring: Zabbix, Grafana, Wazuh
- Automation: Bash, PowerShell, Python
Open-source tools
| Project | What it does |
|---|---|
| mail-dns-audit | Audits MX, SPF, DKIM, DMARC, MTA-STS and TLS-RPT for any domain and explains what is wrong in plain language |
| linux-hardening-kit | Audits and hardens Debian/Ubuntu servers, with dry-run mode and SSH lockout protection |
| restic-backup-kit | Automated restic backups plus weekly restore tests that verify checksums |
| Bit Happens | Free web toolkit for diagnosing DNS, email, TLS and network issues |
Get in touch
LinkedIn · Upwork · bithappens.com.br
📍 Curitiba, Brazil (UTC-3) · Portuguese & English