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.