DeFi | NFT Development by Tony Wen

DeFi | NFT Development

Tony Wen

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About this service

Summary

I offer end-to-end blockchain and DeFi application development, delivering secure smart contracts, scalable web applications, and seamless Web3 integrations. With 4+ years of dApp experience and 8+ years in full-stack engineering, I combine technical depth with a strong focus on user experience and security. What makes me unique is my ability to take projects from concept to deployment, ensuring both technical excellence and real-world usability.

What's included

DeFi application development
I deliver end-to-end decentralized finance (DeFi) solutions: Custom smart contracts (tokens, staking, liquidity, presale, swapping), Secure & scalable web applications with React & Node.js, Wallet integration (MetaMask, WalletConnect, Coinbase Wallet), Web3-enabled transaction handling and blockchain interaction, Deployment to testnet and mainnet environments, Full testing, security best practices, and performance optimization, Clear documentation and post-delivery support
NFT marketplace development
I design and develop secure, scalable, and user-friendly NFT marketplaces tailored to your project’s needs. My services include Smart Contracts(Custom ERC-721/ERC-1155 contracts for minting, buying, and selling NFTs), Marketplace Features(Listing, bidding, auctions, royalties, and secondary sales support), Frontend Development, Backend Development, Payments & Transactions(secure Web3-enabled purchase flow with multiple token/payment support)

Example projects