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Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: Public SponsorAchievement: QuickdrawAchievement: YOLO

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fecasagrandi/README.md

Felipe Casagrandi

I build backends, and I find what your developers missed.

Full-stack developer working with TypeScript, and security researcher on the side. Web apps, Android apps, cloud environments. If it has an attack surface, I work it. My background in development is not a detour. It's the reason I'm effective as a pentester: I know how things are built, so I know exactly how they break.

Development

  • Full-stack developer (PJ) since October 2024
  • NestJS in production on a private client project
  • Data modeling and queries with PostgreSQL and MySQL
  • Caching with Redis, environments with Docker
  • API consumption and process automation with n8n
  • Claude Code as my AI tool in daily development

Kaizen (capstone project): built with NestJS, Prisma and Next.js

Security

  • Web application pentesting
  • Android APK analysis and runtime manipulation
  • Network infrastructure and Active Directory attacks
  • Bug bounty hunting with custom automation
  • Social engineering and phishing simulations

Stack

TypeScript NestJS Next.js PostgreSQL MySQL Redis Prisma Vite Docker n8n

Burp Suite Kali Python Metasploit Frida Nmap Wireshark

C Python Bash Assembly PowerShell TypeScript

Contact

📧 fcasagrandi38@gmail.com 💼 LinkedIn 🌍 Brazil · Remote

Open to backend roles (PJ). Security work on authorized targets only.

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