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:

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

• Twitter: @0xrafasec
• LinkedIn: rafagomesdev
• Telegram: @ox_rafasec