edumelo

Senior Blockchain Engineer | Smart Contract Security Specialist

Senior Blockchain Engineer with 4+ years of expertise in smart contract development, security auditing, and DeFi protocols. Proven track record of deploying NFT collections worth 2,400+ ETH, securing $114M+ in staked assets, and preventing multi-million dollar exploits through security audits. Full-stack Web3 developer specializing in Solidity, cross-chain infrastructure, and enterprise blockchain solutions.


Experience: 5 years

Yearly salary: $62,000

Hourly rate: $35

Nationality: 🇧🇷 Brazil

Residency: 🇧🇷 Brazil


Experience

Web3 / Smart Contract Auditor
FearsOff
2024 - 2025
Audited protocols for Tier-1 exchanges including Crypto.com, HTX, and Smardex. Identified critical vulnerabilities preventing potential multi-million dollar losses. Audited protocols with combined $100M+ TVL with 100% issue resolution before mainnet. Delivered comprehensive audit reports with remediation guidance.
Solidity Engineer
Orium Network
2024 - 2024
Maintained production smart contracts for multi-chain NFT lending protocol across Ethereum, Polygon, and Arbitrum. Led The Graph integration reducing query response time by 70% for 10K+ users. Supported 6 enterprise clients with custom NFT rental mechanisms. Implemented gas optimizations saving users $50K+ monthly.
Senior Blockchain Developer
Seedify
2022 - 2023
Led team of 5 blockchain developers in Web3 gaming ecosystem development. Deployed 2 NFT collections generating 2,472 ETH total volume: Seedworld Vanguards: 1,432 ETH, Mounts of Seedworld: 1,040 ETH. Launched GMFAM token reaching $156K market cap. Secured $114M+ in SFUND staking contracts with zero security incidents. Improved deployment efficiency by 30% using Hardhat/Foundry automation.
Blockchain Developer
Rhizom
2022 - 2022
Designed DeFi pool aggregator integrating Chainlink, Uniswap, and Compound protocols. Developed 'Pollen' Protocol - NFT-backed DeFi platform with automated staking. Created custom oracle system for real-time price feeds. Reduced operational overhead by 60% through DeFi automation.
Solidity Developer
Jigstack
2021 - 2022
Developed Stakbank (decentralized staking) and Lemonade (token launch platform). Implemented full-stack solutions using Solidity, React, Docker, and Node.js. Maintained secure infrastructure with AWS and VPC.
Senior SharePoint/Office 365 Developer
Beck et al. Brasil
2020 - 2022
SharePoint Consultant
Avanade
2018 - 2020
Systems Analyst
Neoenergia
2015 - 2018

Skills

blockchain
hardhat
javascript
node
openzeppelin
solidity
tech-lead
typescript
english
portuguese