I’m a Senior Blockchain Engineer who builds real, production-ready crypto systems — from token smart contracts and vesting vaults to full DApps, dashboards, and trading automation. My work now covers three main areas: ① Blockchain & DeFi | ② AI & Trading Automation | ③ Web, Mobile & Backend ① Blockchain & DeFi Engineering Solidity / EVM: ERC-20, BEP-20, ERC-721, ERC-1155 Token launches: presales, fee & treasury logic, reflections, burn/mint rules Vesting & lockups: team/marketing/seed vesting, airdrop + claim contracts Protections: anti-bot, max wallet / max tx, cooldown, whitelist & blacklist Governance & safety: multisig, timelocks, role-based access, upgradeable proxies Staking & rewards: staking/farming vaults, reward systems, presale + claim portals AMM & liquidity: Uniswap/PancakeSwap-style integration, Chainlink oracles, subgraphs, analytics Chains & Stack EVM chains: Ethereum, BNB Chain, Polygon, Arbitrum, Base Tools: Hardhat, Foundry, OpenZeppelin, Ethers.js, Web3.js, Wagmi, Viem, The Graph, IPFS/Pinata Security: full test suites, fuzz/invariant tests, gas optimization, audit prep & fixes ② AI, Trading & Automation Strategy design and backtesting in Python and TradeStation EasyLanguage MetaTrader (MQL4/5): indicators, EAs, risk modules Integration with exchange/broker APIs, risk rules (max drawdown, position sizing, daily limits) Data pipelines & reporting, plus light ML (signals, anomaly checks, filters) Can connect on-chain data, CEX/DEX feeds, and AI logic into one system ③ Web, Mobile & Backend Around Your Crypto Web (Frontend): React, Next.js, Vue, Tailwind Token dashboards, DApp frontends, admin panels, investor analytics Mobile: React Native & Flutter companion apps (wallet views, staking, notifications) Backend & APIs: Node/Express, Python (Django/FastAPI), REST/GraphQL PostgreSQL/MySQL, Redis, job queues, webhooks Infra & DevOps: AWS, Firebase, Docker, CI/CD, monitoring, security hardening What You Get New tokens and DeFi contracts ready for audit and launch Staking, vesting, and lockup systems with clear dashboards for holders Complete crypto platforms: DApp frontend + backend APIs + optional mobile app Trading bots and tools with risk-aware design and automation Clean code, clear documentation, and a smooth handover for your team Crypto and blockchain are my core focus, extended with practical AI, trading automation, and full-stack web skills so your project is not just launched, but actually usable and maintainable long-term.