0xtan1319

Built marketplace infrastructure handling high-volume NFT transactions using Anchor & Rust, PDAs for escrow management, and CPI calls for SPLToken interactions. Developed Anchor/Rust-based smart contracts for an NFT marketplace. Developed a platform with React/TypeScript and Solana Web3.js for NFT auctions, raffles, and NFT-based games. Audited smart contracts based on an NFT factory contract for formal verification, mitigating PDA derivation conflicts in escrow. Automated state pruning for expired listings and implemented an NFT indexing pipeline. Established a multi-cluster CI/CD pipeline with GitHub Actions-driven Anchor test validators, real-time vulnerability scanning, and deployments across devnet and mainnet.

Designed and deployed 24+ production smart contracts, including ERC-20 token systems, vesting schedules with cliff periods, multi-sig governance wallets, and Solidity-based staking pools with yield optimization algorithms. Optimized contract gas efficiency by 40% through EVM opcode-level improvements and storage slot packing techniques (Foundry benchmarks). Migrated legacy Angular frontends to Next.js with TypeScript, integrating real-time blockchain data via Web3.js/Ethers.js hooks and SWR for caching. Engineered secure blockchain infrastructure by implementing Chainlink Automation for low-latency (<2s) contract triggers and price oracle updates. Integrated Tenderly API for transaction simulation. Automated test and deployment pipelines through CI/CD systems using GitHub Actions.

Stayed current with emerging technologies and developed 10+ mobile applications. Designed, developed, and deployed 20+ full-stack web applications tailored to the business objectives and needs of various clients using Angular, React, Vue, Express, MySQL, PostgreSQL, and MongoDB. Led the successful migration of an existing monolithic app from Python 2.x and Flask to Python 3.x and Django, resulting in improved performance and compatibility. Accelerated future schema migrations by 30% through the implementation of optimized SQL scripts. Worked as a part of a team on several Spring and Angular projects, developing new features while fixing bugs and optimizing performance. Implemented SEO techniques in a React application with server-side rendering (SSR) using Next.js and Gatsby, achieving a 23% boost in page views per session for an e-commerce site with a catalog of 20,000+ products. Performed tests and audits for 12+ projects across the Netizens codebase, ensuring data safety and system performance.