Building Decentralized Systems with Node.js & Web3
๐ London, England
Mr. J. Mercel is a prolific blockchain engineer with expertise in designing and implementing enterprise-grade decentralized systems. With a deep understanding of cryptography, consensus mechanisms, and smart contract optimization, he has architected blockchain solutions serving over 2 million users across multiple blockchain networks. His work focuses on scalability, security, and interoperability in Web3 ecosystems.
Mr. J. Mercel is a prolific blockchain engineer with expertise in designing and implementing enterprise-grade decentralized systems. With a deep understanding of cryptography, consensus mechanisms, and smart contract optimization, he has architected blockchain solutions serving over 2 million users across multiple blockchain networks. His work focuses on scalability, security, and interoperability in Web3 ecosystems.
Designing and auditing gas-optimized smart contracts for Ethereum, Polygon, and Arbitrum using Solidity and Vyper.
Building scalable microservices with Express, NestJS, and GraphQL for blockchain data indexing and API services.
Implementing ECDSA, zero-knowledge proofs, and multi-signature wallets with comprehensive security audits.
Architecting rollup solutions, sidechains, and cross-chain bridges using Arbitrum, Optimism, and Polygon.
Engineering automated market makers, lending protocols, and yield optimization contracts with robust risk management.
Expertise in Hardhat, Truffle, and Foundry with full CI/CD pipelines and automated security testing frameworks.
Open to collaborations on smart contract audits, protocol design, and blockchain infrastructure projects. Let's discuss your next decentralized solution.