Systems administrator and IT manager with 10+ years running infrastructure, now going deep on cybersecurity — offensive and defensive — after years of it being part of the job. I build and operate the boring, load-bearing parts of security: hardened Linux fleets, endpoint protection rollouts, scanning tooling, and CI/CD pipelines that fail loudly when something is wrong.

Most of my public code lives in three places: the catnet-io scanning ecosystem (Go), infrastructure automation for MadeiraHackerSpace, and security operations runbooks under @portosoft.

• 🔭 Currently building — the catnet-io ecosystem: one Go scanning engine, many thin frontends
• 🛡️ Day to day — endpoint security (Kaspersky Security Center), Linux hardening, Proxmox, incident response
• 🎓 Education — Information Security & CyberDefense · postgraduate in Cybersecurity
• 🐧 Daily drivers — Pop!_OS, Rocky Linux, Ubuntu, Void Linux
• 🧪 Interests — threat intelligence, malware analysis, DevSecOps, game development
• 📍 Porto Velho, Rondônia — Brazil · 🇧🇷 PT-BR / 🇺🇸 EN

Modular, event-driven network scanning ecosystem. Strict separation between scan logic and frontends — every client is a thin, swappable consumer of the same engine (client-go / kubectl / k9s pattern).

Repo	Role	Release
engine	Core scan logic — zero CGO, zero external deps, channel-based event API
catnet	CLI (Cobra) — docs
app	Desktop GUI (Wails + React)
tui	Terminal UI (Bubble Tea) — docs

Distributed via Homebrew tap and Scoop bucket. Every repo runs golangci-lint, govulncheck and branch-protection enforcement in CI.

Deployment, automation and troubleshooting runbook for Kaspersky Security Center 16.x on Linux and virtualized environments — pre-checks, guided install, compatibility matrix, and recovery procedures drawn from real rollouts.

Pipeline: CodeQL · Semgrep · Aikido · integration CI.

Multi-tenant SaaS control plane for VPS resale and infrastructure management on Proxmox VE — customer VMs, billing, node scheduling and resource allocation. Runs the real cloud services of MadeiraHackerSpace.

Homelab and community infrastructure managed as code, plus status-bot for service monitoring.

Co-founder of a two-person indie studio. Top-down horde survivor for desktop browsers. My side: studio ops and delivery infrastructure — bilingual EN/PT landing, GitHub Actions, CodeQL, Dependabot. Everything outside 2D art and game design.

Small fixes that solve real Linux desktop problems, kept in sync upstream:

• redragon-hs-companion — corrects PCM channel desync on wireless Redragon headsets under PipeWire
• antigravity-ide-installer — installer/updater for Google Antigravity IDE on Ubuntu/Debian, with profile backup and safe rollback (gist)
• xbrowsersync-app-community — xBrowserSync with Manifest V3 fixes

Open to security & infrastructure discussions, open-source collaboration on tooling and DevOps, indie game development, and mentorship for people breaking into security and systems engineering.