Hire the Best Blockchain Developers
in the United States

Clients rate our Blockchain developers
Rating is 4.8 out of 5.
4.8/5
Based on 376 client reviews
Anjum S.

Fredericksburg, Virginia

$20/hr
5.0
60 jobs

As a forward-thinking agency, we specialize in delivering cutting-edge Web 3 solutions to businesses, driving innovation across various industries. Our expertise and services are tailored to meet the dynamic needs of our clients, ensuring their projects stand out in the digital landscape. ๐Ÿ”ฅ Our Services ๐ŸŽฎ Meta-Fi Integration: Revolutionize your gaming experience with our advanced NFT trading solutions, enhancing interoperability and engagement. ๐Ÿ’ฑ De-Fi in the Metaverse: Unleash the potential of digital assets with our bespoke cryptocurrency wallets and exchanges. ๐Ÿ•น๏ธ GameFi โ€“ Next-Gen Web3 Gaming: Enter a new era of gaming with our integrated ecosystem that combines blockchain, DeFi, NFTs, and in-game currencies. ๐Ÿ’ป Bespoke Web3 Development: Customized Web3 solutions for businesses of all sizes, leveraging blockchain, NFTs, and cryptography. ๐Ÿ”— Custom Blockchain Solutions: Tailor-made blockchain solutions for startups and enterprises, focusing on automation and streamlined operations. ๐Ÿ“œ Smart Contract Development: Specialized in Solidity and Rust, we deliver versatile smart contracts for applications like De-Fi, DEX, DApp, and NFTs. ๐ŸŽจ NFT Tokenization Services: Transforming collectibles into valuable digital assets with our innovative NFT development. ๐Ÿ›’ NFT Marketplace Creation: Comprehensive NFT marketplace development, blending smart contract protocols and robust programming. ๐Ÿ”„ Decentralized Exchange Development: Secure, scalable, and custom-built DEX solutions for businesses aiming for peak performance. ๐Ÿ”’ Digital & Crypto Wallet Development: Streamlined and secure wallet development services tailored for global digital asset management. ๐ŸŒ Strategic Web3 & Blockchain Consulting: Propel your growth with our strategic consultancy in blockchain and Web3 technologies. โœ… My proficiency spans NodeJS and .NET for robust back-end development, while Django powers seamless integration and powerful functionalities. On the front-end, I excel in ReactJS and Angular, creating captivating user interfaces. โœ… As a Lead Full-Stack Developer, I've successfully managed teams, ensuring timely project deliveries and streamlined workflows. My collaborative approach ensures clear communication and a precise understanding of client needs. โœ… I've contributed to notable projects, demonstrating my commitment to innovation and excellence in delivering tailored solutions using NodeJS, .NET, Django, ReactJS, and Angular. โœ… My expertise extends to databases such as PostgreSQL, MySQL, and MongoDB, ensuring optimized data management. Additionally, I am proficient in mobile application development using React Native. โœ… ๐™Ž๐™ค๐™ก๐™ช๐™ฉ๐™ž๐™ค๐™ฃ ๐˜ผ๐™ง๐™˜๐™๐™ž๐™ฉ๐™š๐™˜๐™ฉ | ๐˜ฟ๐™š๐™ซ๐™Š๐™ฅ๐™จ | ๐˜ผ๐™’๐™Ž | ๐˜ผ๐™ฏ๐™ช๐™ง๐™š | ๐™๐™š๐™ง๐™ง๐™–๐™›๐™ค๐™ง๐™ข | ๐™†๐™ช๐™—๐™š๐™ง๐™ฃ๐™š๐™ฉ๐™š๐™จ | ๐™‚๐˜พ๐™‹: Empower your organization with scalable, resilient, and secure cloud-native solutions crafted by an experienced Solution Architect and DevOps specialist. With expertise spanning AWS, Azure, Google Cloud Platform (GCP), Terraform, Kubernetes, and more, I provide end-to-end services to optimize your cloud infrastructure and drive digital transformation. โœจ Our Track Record Working with esteemed clients like Vulcan Forged, DadaVault, Private Jet Pyjama Party, and Elysium. Celebrated as top 100 metaverse innovators and holding CMMI level 2, V.02 certification. Recognized by Good Firms, Selected Firms, and IT Firms as a leader in blockchain development. Members of the Blockchain Game Alliance and the Metaverse Standards Forum, we remain at the forefront of industry advancements. ๐Ÿš€ Ready to Innovate? Embark on a journey to transform your blockchain dreams into reality with us. Connect on Upwork and letโ€™s craft the future of technology together! ๐ŸŒŸ

  • Blockchain Architecture
  • Blockchain Development
  • Ethereum
  • Smart Contract
  • Cryptocurrency
  • API Development
  • React
  • ASP.NET
  • Node.js
  • Solidity
  • Binance Coin
  • Back-End Development
  • Full-Stack Development
  • Django
  • DevOps
Alwaz A.

Chicago, Illinois

$30/hr
4.4
8 jobs

Over the past 4+ years, I've worked across AI, web development, blockchain, and product design, which means I can take a project from early wireframes all the way through deployment. Here's where I spend most of my time: โœ… AI & LLM Integration - RAG pipelines, custom chatbots, OpenAI/LangChain integrations, FastAPI backends for AI services. โœ… Full-Stack Development - Next.js, React, TypeScript on the frontend. Node.js, Supabase, PostgreSQL, Firebase on the backend. โœ…Mobile Development - React Native for cross-platform iOS and Android apps. โœ… Blockchain & Web3 - Solidity smart contracts, Ethers.js, Web3.js, Rust. Token launches, DeFi protocols, on-chain logic. โœ… Design & UI/UX โ€” I don't just code layouts someone else drew. I design interfaces that make sense, then build them in TailwindCSS with real attention to detail. Why Work With Me? โœ”๏ธ Proven expertise in developing applications & web platforms โœ”๏ธ Best coding practices โœ”๏ธ Fast, efficient and result driven development โœ”๏ธ Dedicated to long-term growth ๐Ÿ“ฉ Letโ€™s build!

  • LangChain
  • Node.js
  • Next.js
  • React
  • Supabase
  • Firebase
  • Large Language Model
  • NodeJS Framework
  • MongoDB
  • Tailwind CSS
  • Chatbot
  • Chatbot Development
  • ChatGPT API Integration
  • AI Agent Development
  • AI Chatbot
Tyler L.

Bristol, Pennsylvania

$40/hr
4.9
28 jobs

I have been working in the space full time since 2018 and have gained a broad range of experiences. I have helped raise over a combined 3.5m for clients in 2021. My primary focus is now Solana where i spend a majority of my time teaching Blockchain Development on Solana. I really enjoy creating Tokenomics and writing Whitepapers. I also have creative direction/branding experience and a network of artists. I have done operations for teams as high as 50 people. 90% of my work comes from Twitter/Discord and past client referrals. I have also have obtained 4 clients legal regulatory compliance for their DAO in the USA. I value morals and ethics so any shady/suspicious requests will be ignored.(No flash loans, bots/scripts, arbitrage products) Services: Smart contract and deployment (-10 hours): Contract Deployment Post Project Consultation Candy Machine Deployment(Solana) Complete Token Project (20 hours): Website Whitepaper Contract Tokenomics Deployment Post Project Consultation Custom Smart Contract/NFT project (40+/- hours): Custom Contract with client specified logic. Token Frontends / Dashboards (React) DEX/Swap Clones NFT Minting Backend/Frontends/ IPFS Other Services: Regulation Consultations General Education Custom NFT Art (1k-10k Generated assets) Supported Standards: ERC-20 - Standard tokens ERC-998 - Composable Tokens ERC-721 - NFTs ERC-1155 - NFTs On-Chain NFTS Supported Networks: ETHEREUM SOLANA POLYGON/MATIC BSC AVALANCHE FANTOM

  • Blockchain
  • Blockchain Development
  • Ethereum
  • Smart Contract
  • Project Management
  • Initial Coin Offering
  • Cryptocurrency
  • web3.js
  • Solidity
  • React
  • HTML
  • JavaScript
  • CSS
Salmaan A.

New York, New York

$50/hr
4.3
11 jobs

๐Ÿš€ Building the future of Web3 and AI-powered innovation. I help startups, founders, and enterprises develop secure, scalable, and gas-optimized blockchain and AI solutions from smart contracts to AI-driven dApps, DeFi protocols, and cross-chain ecosystems. With 8+ years of experience in Solidity, Rust, and full-stack Web3 development, I am not just a coder, Iโ€™m a technical strategist who can turn your blockchain or AI concept into a production-ready product trusted by users and auditors alike. โœ… Core Blockchain & AI Services Smart Contract Development & Auditing -ERC20, ERC721, ERC1155, ERC404, BEP20, SPL token standards -Custom tokenomics: staking, vesting, whitelisting, royalties -Audit-ready code with gas optimization and security best practices AI + Web3 Integrations -On-chain AI data automation, AI agent integration, and model inference -Connecting machine learning APIs to decentralized apps -Smart contracts that interact with AI-powered oracles and analytics DeFi & Cross-Chain Protocols -DEX, lending, staking, and liquidity pool architecture -Cross-chain bridge development (LayerZero, Wormhole) -Yield farming and tokenomics systems Full-Stack dApp Development -Frontend: React, Next.js, TypeScript, TailwindCSS -Backend: Node.js, Python, Rust, Express.js -Web3 libraries: Ethers.js, Web3.js, Solana Web3.js Security & Testing -Unit, fuzz, and integration testing (Foundry, Hardhat, Anchor) -Vulnerability mitigation: reentrancy, flash loan, integer overflow -Audit preparation and refactoring for gas efficiency ๐Ÿ” Popular Project Types >Cross-chain NFT marketplaces >AI-driven smart contracts & analytics dashboards >DAO governance and voting systems >DeFi yield platforms & crowdfunding dApps >zkEVM and L2 integrations >Web3 wallets and automation scripts ๐Ÿง  Tech Stack *Languages: Solidity, Rust, TypeScript, JavaScript, Python *Frameworks: Hardhat, Foundry, Anchor, Brownie, Next.js *Chains: Ethereum, Solana, Polygon, BSC, Avalanche, Arbitrum, zkSync *Infra: IPFS, PostgreSQL, MongoDB ๐Ÿ’ฌ Client Feedback โญ โ€œDelivered an audit-ready smart contract with zero vulnerabilities.โ€ โญ โ€œOptimized our DeFi protocol, reducing gas costs by 40%.โ€ โญ โ€œFlawless communication, felt like having a CTO on the team.โ€ ๐Ÿ“ž Letโ€™s Build the Future Whether youโ€™re creating a Web3 DeFi app, AI-powered blockchain system, or NFT marketplace, Iโ€™ll help you design, develop and deploy with confidence. ๐Ÿ“ฉ Click โ€œInvite to Jobโ€ or message me, letโ€™s bring your blockchain + AI vision to life

  • Blockchain
  • Blockchain Development
  • Ethereum
  • Solidity
  • Smart Contract Development
  • DApps
  • Blockchain, NFT & Cryptocurrency
  • Web3
  • Crypto Wallet Development
  • NFT Marketplace
  • Artificial Intelligence
  • Machine Learning
  • Full-Stack Development
  • DevOps
  • NFT Minting
Nicholas V.

Howell Township, New Jersey

$80/hr
4.6
11 jobs

Extensive expertise, and experience in taking idea to a deliverable product / MVP. Primarily from my experience being the technical lead at a small size venture funded start up I've had the chance to First, explore a wide variety of languages, frameworks, and technologies allowing me to have a full conceptual overview of the tools at my disposal, and their respective benefits + pitfalls, and second have the experience working with, and managing a small distributed team closely with the CEO.

  • Blockchain
  • Smart Contract
  • Web Development
  • Next.js
  • Rust
  • Vue.js
  • Golang
  • React
  • Node.js
  • Web Scraping
  • Solidity
  • AI Model Training
  • AI Development
  • AI Agent Development
  • AI Implementation
  • Machine Vision
  • OpenCV
Calvin L.

Kaysville, Utah

$70/hr
5.0
14 jobs

I am a senior full stack & blockchain developer with 8+ years of rich, real world experience. I enjoy and understand the importance of both technical and creative aspects during the developmental process and strive to deliver perfect results in the quickest time possible, no matter the circumstances or job requirement. My strongest professional skills are included in the following list: - Front-end: HTML, CSS, JavaScript, Bootstrap, Sass, React/Redux, Typescript, Vue.js, GraphQL, Apollo. - Back-end: Node.js, Django, Laravel and Ruby on Rails - Database: MongoDB, MySQL, PostgreSQL -Software UI/UX Design, Graphic Design -AWS Amplify, S3 bucket. - ERC-721, ERC-20, ERC-1155 smart using solidity. - Firmware development for PIC, ARM and FPGA

  • Ethereum
  • React
  • JavaScript
  • Node.js
  • CSS
  • HTML
  • Sass
  • Bootstrap
  • Redux
  • Database Programming
  • Solidity
  • Layer 2 Blockchain
  • DeFi
  • NFT Minting
  • UX & UI

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Cost to hire a Blockchain Developer

Cost to hire a Blockchain Developer

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