I am Samurai, an AI, cybersecurity and full-stack engineer working at the intersection of software, security and critical operations.
My work is centered on products that must do more than look impressive: they need clear authority boundaries, reliable data flows, human oversight, traceable decisions and a realistic path to production.
Focus Secure AI · Cybersecurity · SaaS · Data Governance
Domains Aviation · Pentesting · Sustainable Infrastructure
Approach Security-first · Evidence-driven · Human-in-the-loop
Building N3xus D3v
These are the projects that best represent how I think and build.
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AI-assisted aviation operations platform Transforms flight logs, fuel receipts and maintenance images into structured records with human review, auditability and privacy-by-design.
Engineering: authenticated APIs, billing validation, Firebase isolation, AI resilience, automated tests and CI. Open product ↗ · Private source · Active development |
Self-hosted penetration testing workspace Unifies authorized scope, evidence, vulnerability findings, CVSS scoring, compliance mapping and AI-assisted report generation.
Security: authorized-use boundaries, evidence confidence, classification, remediation tracking and human-reviewed AI. Open live workspace ↗ · Private source |
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Authorized recon and vulnerability assessment A structured security engagement covering scope control, passive and active reconnaissance, attack-surface mapping, evidence handling and remediation planning.
Deliverables: sanitized evidence, integrity hashes, risk matrix, technical report, findings audit and remediation roadmap. Confidential engagement · Defensive and authorized use only |
Sustainable datacenter intelligence Interactive monitoring for energy, carbon impact, server health, SRE signals and idle-resource optimization in critical infrastructure.
Product: operational dashboards, alerts, reports, resource marketplace and explicit demo-data boundaries. |
| Project | Signal | What it demonstrates |
|---|---|---|
| CyberJustice Brasil · Live | Cybersecurity product experience | Responsive information architecture for cybercrime cases, protocols, specialists and digital-safety education. |
| Data Sentinel | Data security and LGPD | Python dashboard for sensitive-data analysis with Google Drive integration, Plotly visualization and Docker delivery. |
| VoltEra Nexus | Creative technology | Interactive experience connecting decentralized infrastructure, clean energy, digital art and product storytelling. |
Public prototypes are presented as case studies. Production readiness is stated explicitly inside each project rather than implied by polished UI.
flowchart LR
A["Understand<br/>domain + threats"] --> B["Design<br/>secure architecture"]
B --> C["Build + validate<br/>tests + evidence"]
C --> D["Release<br/>human review + gates"]
- Security before spectacle — authentication, authorization, isolation and sensitive-data handling are architectural concerns.
- AI assists; humans remain accountable — uncertain output stays explicit, reviewable and correctable.
- Evidence over claims — tests, CI, documentation, screenshots, hashes and known limitations support the story.
- Domain context matters — aviation, pentesting and infrastructure products require different failure models.
- Production is a gate, not a vibe — a working demo is not automatically a production-ready system.
| Layer | Tools |
|---|---|
| Frontend | TypeScript, React, Next.js, Vite, Tailwind CSS, shadcn/ui, Motion |
| Backend & APIs | Node.js, Express, Python, FastAPI, REST, webhooks |
| AI & Data | Gemini, LLM integrations, Pandas, Plotly, structured extraction |
| Cloud & Platform | Firebase, Supabase, Docker, Google Cloud, Azure, Vercel |
| Security | Threat modeling, OWASP practices, CVSS, recon, evidence integrity, LGPD |
| Delivery | Git, GitHub Actions, automated tests, CI/CD, technical documentation |
Language cards reflect public repositories and do not represent proficiency by themselves.
I am also a helicopter flight instructor and DJ. Aviation reinforces checklists, risk awareness and calm decision-making; music sharpens timing, adaptation and the ability to read a live system. Both influence how I build.
