All Services Programming & Development blockchain, nft, cryptocurrency, tokens Senior Blockchain Development $40/hr · Starting at $500 Custom blockchain application developmentSmart contract development and auditing supportEthereum, BNB Chain, Polygon, Solana, and Avalanche developmentERC-20, ERC-721, ERC-1155, and custom token developmentNFT marketplace developmentDeFi platform developmentCryptocurrency wallet integrationWeb3 and dApp developmentDAO implementationStaking and yield farming solutionsCross-chain integrationToken launch and deploymentBlockchain API integrationSecurity testing and smart contract optimizationBlockchain consulting and architecture designMaintenance, upgrades, and long-term support About $40/hr · Ongoing Download Resume Custom blockchain application developmentSmart contract development and auditing supportEthereum, BNB Chain, Polygon, Solana, and Avalanche developmentERC-20, ERC-721, ERC-1155, and custom token developmentNFT marketplace developmentDeFi platform developmentCryptocurrency wallet integrationWeb3 and dApp developmentDAO implementationStaking and yield farming solutionsCross-chain integrationToken launch and deploymentBlockchain API integrationSecurity testing and smart contract optimizationBlockchain consulting and architecture designMaintenance, upgrades, and long-term support Skills & Expertise API DevelopmentBlockchainBlockchain DevelopmentDAppDogecoinMonero XMRSmart ContractsSolanaWeb3 Related Work Collections SocketFi 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts App DevelopersAPI DevelopersWordPress ExpertsWeb DevelopersGame DevelopersReact Native DevelopersE-Commerce ExpertsNext.js DevelopersERP ConsultantsWeb DesignersMobile Analytics ExpertsiOS App DevelopersAndroid Game DevelopersDesignersMachine Learning EngineersAWS DevelopersGoogle Play DevelopersUnreal Engine DevelopersSAP ExpertsWordPress DevelopersMobile Game DevelopersCRM ConsultantsGPS ServicesVideo Game Designers and Developers