Full-stack Web3 engineer with 5+ years of software engineering experience and 4+ years involved in the development of production-grade decentralized applications across EVM, Solana, Hedera, and L2 ecosystems. Expert in end-to-end dapp ownership, from Solidity and Rust smart contracts through NestJS backends and data indexers to pixel-perfect React frontends. Delivered over 40 projects at a Web3 consultancy spanning DeFi protocols, NFT launchpads, multi-chain wallet integrations, gamification platforms, and real-time analytics dashboards. Strong grasp of Web3 security practices including signature-based access control, on-chain randomness (Chainlink VRF), and account abstraction (Abstract Global Wallet).
Experience: 6 years
Yearly salary: $48,000
Hourly rate: $30
Nationality: 🇨🇴 Colombia
Residency: 🇨🇴 Colombia
Experience
Full-Stack Web3 Engineer
Web Three Consulting and Auditing 2024 - 2026
Owned full-stack dapp development across EVM, Solana, Hedera, and L2 networks, from smart contract design to React frontend and NestJS backend infrastructure. Built complex on-chain integrations using ethers.js, wagmi, viem, and wallet adapters for MetaMask, RainbowKit, Abstract Global Wallet, and Hashpack across multiple blockchain ecosystems. Developed and deployed smart contracts covering NFT minting mechanics, Dutch auctions, presales, revenue splitting, DeFi vaults, and Chainlink VRF-powered randomness. Integrated account abstraction (Abstract Global Wallet) for gasless minting experiences across multiple production dapps. Built multi-chain event indexers tracking ERC-20, ERC-721, and staking activity, powering real-time leaderboards, badge systems, and analytics dashboards. Conducted smart contract security audits reviewing for reentrancy, access control, and common EVM vulnerabilities.
Full-Stack Developer
Invorious Software 2021 - 2024
Deployed NFT smart contracts on Ethereum supporting over 100,000 mint transactions in production. Built React-based wallet connection flows and on-chain transaction execution using ethers.js across multiple client projects. Developed on-chain event indexers feeding PostgreSQL databases powering real-time frontend data. Progressed from junior frontend to full-stack developer, taking ownership of dapp architecture and client delivery using NX monorepo and CI/CD pipelines.
Skills
backend
defi
front-end
hardhat
nestjs
nft
node
postgres
python
react
rust
solana
typescript
solidity
