Muhammad U.

Hey 👋 I am a Blockchain and Full-Stack Developer with 5+ years of experience building Web3 applications, DeFi protocols, NFT marketplaces, smart contracts, and scalable backend systems. I help startups and businesses turn ideas into secure, production-ready blockchain and web applications, from smart contracts to full dApps and mobile apps. If you're looking for a Solidity developer, Web3 developer, or full-stack developer who understands both blockchain architecture and real-world product development, I can help. 🔗 Blockchain Development (Solidity | Rust | Web3) I design, develop, and deploy secure smart contracts and decentralized applications across multiple chains: Ethereum | BSC | Polygon | Avalanche | Base | Optimism | Solana Experience with: ERC-20, ERC-721, ERC-1155 token development DeFi protocols (staking, farming, vaults, liquidity pools) NFT marketplaces & minting platforms Generative NFT collections Smart contract auditing mindset (security + gas optimization) 🛠 Full-Stack Development (Node.js | Spring Boot | APIs) I build scalable backend systems and REST APIs using: Node.js (Express / NestJS) Java Spring Boot (enterprise-grade systems) REST & GraphQL APIs Microservices architecture (where needed) Databases: PostgreSQL MySQL MongoDB Firebase 🔌 Web3 / dApp Integration I create seamless blockchain user experiences using: Ethers.js / Web3.js Smart contract integration Wallet integrations: MetaMask, WalletConnect, Coinbase Wallet, Phantom, Unisat, Xverse Focus: simple UX for complex blockchain systems 📱 Mobile App Development (React Native / Expo) Cross-platform mobile apps for iOS and Android using a single codebase. Built apps include: Portfolio project: SPORTAINMENT App for both Android and IOS Web3 / crypto apps E-commerce apps Dashboard & utility apps Performance-focused, scalable, and production-ready. 🎨 Frontend Development React.js (Material UI / Chakra UI) Vue.js (Quasar Framework) Focus on clean UI, responsive design, and user-friendly interfaces. ☁️ Cloud & DevOps (AWS / GCP) Production deployment and infrastructure setup using: AWS (EC2, S3, Lambda, RDS, CloudFront, API Gateway) Google Cloud Platform (storage & deployment) I can set up full scalable architecture from backend to deployment pipelines. 🚀 Why clients hire me Strong experience in DeFi, NFT, and Web3 ecosystems Full-stack capability (frontend + backend + blockchain) Production-ready mindset (security, scalability, performance) Clear communication and long-term collaboration I don’t just deliver code, I help build real, usable, scalable products. If you're looking for a Web3 developer, Solidity developer, or full-stack blockchain engineer, feel free to reach out. I’d be happy to discuss your project.