Henry K.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Professional Overview Full-stack blockchain architect pioneering advanced DeFi solutions with expertise in cross-chain infrastructure, liquid staking protocols, automated market makers (AMM), and NFT financialization. Specialized in account abstraction (ERC-4337) and zero-knowledge protocols, delivering innovative cross-chain lending protocols using Layer Zero, Axelar, and Chainlink CCIP for secure Token Lending and Bridge implementations. Deep experience in DeFi primitives including AMM design, liquidity provisioning, and yield optimization strategies. Extensive experience with modern Web3 development stack (Foundry, Viem, Wagmi) and comprehensive oracle integration (Chainlink, Pyth, Axelar) for reliable price feeds, cross-chain messaging, and General Message Passing (GMP). Core Expertise - Cross-Chain Architecture: Design and implementation of protocols enabling secure multi-chain asset transfers and lending mechanisms for stablecoins and Real World Assets (RWA) - DeFi Infrastructure: Development of bridge protocols connecting Traditional Finance with DeFi, including robust fiat on/off ramp solutions - Smart Contract Engineering: Creation of gas-optimized, security-first smart contracts for DAO governance and DeFi protocols - Account Abstraction: Implementation of ERC-4337 compliant smart accounts and paymasters - ZK Solutions: Development of zero-knowledge proofs for scalable and private DeFi applications Key Achievements - Architected and deployed a cross-chain lending protocol that facilitated over $1M in transaction volume - Developed and launched a React Native SDK enabling enterprise-grade wallet integration - Led and mentored a 5-person development team in successfully delivering a DeFi bridge platform - Successfully shipped a production-ready fiat onramp/offramp platform with comprehensive KYC integration Technical Stack Frontend Development - React.js, Next.js - TypeScript - wagmi, viem Backend Systems - Node.js - MongoDB - AWS Infrastructure - Rust - TypeScript Blockchain Development - Solidity (Smart Contracts) - Layer Zero - Chain Link CCIP & Oracle Networks - Pyth Oracle Integration - Zero-Knowledge Proofs - Ethers.js, Web3.js, Viem - Hardhat & Foundry (Testing) Areas of Focus - Cross-chain protocol architecture - DeFi platform development - Account Abstraction implementation - ZK-powered DeFi solutions - Scalable blockchain infrastructure Project Engagement Preferences - Full-stack DeFi development - Cross-chain protocol design and implementation - Smart contract architecture and auditing - Technical leadership roles