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Achievements

Achievement: Pair Extraordinairex3Achievement: YOLOAchievement: QuickdrawAchievement: Pull Sharkx3Achievement: Arctic Code Vault Contributor

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0xrafasec/README.md

Hi there, I'm Rafa 👋

Full-Stack Developer Lead | Security Researcher | Innovative Product Builder

I am based in Brazil (GMT -3), a seasoned full-stack developer and lead at a remote American blockchain company. I'm passionate about leveraging cutting-edge technologies to build innovative products and solutions, with deep expertise in blockchain, cybersecurity, and disruptive tech. I constantly explore new technologies to create business opportunities.

Connect with me:

LinkedIn Twitter GitHub

Technologies & Tools:

Development:

  • Frontend: React, Next.js
  • Backend: Node.js (Nest, Express), Python (Django), Golang (Gin)
  • Mobile: Flutter, React Native
  • Blockchain: Solidity, Rust, Go - Distributed systems architecture

Security:

  • Smart Contracts: EVM auditing, DeFi protocols, Static analysis (Slither, Foundry, Echidna)
  • Offensive Security: Red team operations, Penetration testing, Exploit development
  • Infrastructure: Docker, Kubernetes, AWS, Advanced Linux hardening

Low Level: Rust, Assembly

Security Research & Red Team

Independent security researcher with expertise across multiple domains:

Smart Contract Security:

  • EVM-based protocol auditing and vulnerability research
  • DeFi exploit analysis and prevention strategies

Offensive Security:

  • Red team operations and adversary simulation
  • Full-cycle penetration testing (reconnaissance → exploitation → post-exploitation → persistence)
  • Vulnerability research and responsible disclosure
  • Bug bounty programs and security consulting

Tools & Methodologies:

  • Static analysis, fuzzing, formal verification
  • Network penetration, web application security
  • Binary exploitation, reverse engineering

Interests & Hobbies

  • Security Research: Exploit development, smart contract vulnerabilities, advanced attack vectors
  • Investment & Tech: Cryptocurrency, emerging technologies, market analysis
  • Linux Enthusiast: Arch Linux advocate, system optimization, security hardening
  • 3D Modeling: Blender for high-quality 3D asset creation
  • Aviation: Virtual flight simulation

Looking For

Open to opportunities in:

  • Blockchain security & smart contract auditing
  • Red team operations & penetration testing
  • Full-stack development
  • Security consulting & private audits
  • Innovative tech projects at the cutting edge

Available for freelance/consulting work.

Contact

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  1. ecies-bls12381 ecies-bls12381 Public

    ecies-bls12381 is a Go package that simplifies keypair generation, encryption, and decryption using ECIES with the BLS12381 elliptic curve. It leverages the Kyber cryptographic library for secure o…

    Go 2

  2. rfirewall rfirewall Public

    RFirewall is a cutting-edge, user-centric firewall solution for Linux systems, currently in the planning and development stages.

    Rust 1