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 188 client reviews
Salmaan A.

New York, New York

$50/hr
4.3
11 jobs

🚀 Building the future of Web3 and AI-powered innovation. I'm a Blockchain & AI Developer specializing in Smart Contracts, Solana development, and full stack development across decentralized ecosystems. As a Blockchain & AI Developer, 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 Solana-native ecosystems. With 13+ years of experience in Solidity, Rust, and full stack development in Web3, I'm not just a coder, I'm a technical strategist who can turn your blockchain or AI concept into production-ready products. I specialize in building Smart Contracts on Solana, Ethereum, and other blockchain networks using Rust and Solidity. ✅ Blockchain & AI Developer Services 🔗 Smart Contracts Development & Auditing • ERC20, ERC721, ERC1155, ERC404, BEP20, SPL token standards • Smart Contracts with custom tokenomics: staking, vesting, whitelisting, royalties • Audit-ready Smart Contracts with gas optimization and security best practices • Solana Smart Contracts using Rust and Anchor framework 🤖 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 • Blockchain solutions powered by advanced AI capabilities 💱 DeFi & Cross-Chain Protocols • DEX, lending, staking, and liquidity pool architecture • Cross-chain bridge development (LayerZero, Wormhole) • Solana DeFi ecosystem development and yield farming systems • Blockchain-based yield farming and tokenomics systems 🛠️ Full-Stack dApp Development • Frontend: React, Next.js, TypeScript, TailwindCSS • Backend: Node.js, Python, Rust, Express.js • Full Stack Development across Solana, Ethereum, and multi-chain environments • Web3 libraries: Ethers.js, Web3.js, Solana Web3.js 🔐 Security & Testing • Unit, fuzz, and integration testing (Foundry, Hardhat, Anchor) • Vulnerability mitigation in Smart Contracts: reentrancy, flash loans, overflow • Blockchain audit preparation and Rust-based security protocols 🔍 Blockchain & AI Developer Specializations • AI-driven blockchain systems & analytics dashboards • Solana token launches and SPL Smart Contracts • Blockchain-based DAO governance and voting systems • DeFi yield platforms built with Rust and Solana • Smart Contracts for zkEVM and L2 integrations • Web3 wallets and automation scripts using Rust 🧠 Full Stack Development Tech Stack • Languages: Solidity, Rust, TypeScript, JavaScript, Python • Frameworks: Hardhat, Foundry, Anchor (Rust framework), Brownie, Next.js • Chains: Ethereum, Solana, Polygon, BSC, Avalanche, Arbitrum, zkSync • Infra: IPFS, PostgreSQL, MongoDB 💬 Client Feedback • "Delivered audit-ready Smart Contracts with zero vulnerabilities." • "Blockchain protocol optimization reduced gas costs by 40%." • "Solana Smart Contracts deployment was flawless—felt like having a CTO on the team." 📞 Let's Build the Future Whether you're launching a Solana token, building blockchain DeFi apps, or creating AI-powered Smart Contracts, I'll design, develop, and deploy with confidence. As your Blockchain & AI Developer, I bring Rust expertise and full stack development capabilities to every project. 📩 Click "Invite to Job" or message me—let's bring your blockchain and 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
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: ✅ AI & LLM Integration - RAG pipelines, custom chatbots, OpenAI/LangChain integrations, FastAPI backends for AI services. ✅ Full-Stack Development - Next.js, React, TypeScript on the frontend. Node.js, Supabase, PostgreSQL, Firebase on the backend. ✅Mobile Development - React Native for cross-platform iOS and Android apps. ✅ Blockchain & Web3 - Solidity smart contracts, Ethers.js, Web3.js, Rust. Token launches, DeFi protocols, on-chain logic. ✅ Design & UI/UX — 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? ✔️ Proven expertise in developing applications & web platforms ✔️ Best coding practices ✔️ Fast, efficient and result driven development ✔️ Dedicated to long-term growth 📩 Let’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
Michael S.

Garland, Texas

$60/hr
5.0
1 jobs

👋 Hi, I'm a Full Stack Blockchain Developer | Web3 Engineer | NFT & DeFi Specialist I help startups and enterprises build and scale their ideas into real-world blockchain applications. From early-stage consulting to full product delivery, I partner with businesses to integrate blockchain, NFTs, smart contracts, and decentralized systems into their models, securely and efficiently. With years of hands-on experience, I have developed and led full-cycle blockchain solutions, including NFT marketplaces, DeFi protocols, custom smart contracts, and token launches on Ethereum, Solana, and other major networks. I don't just write code, I offer strategic insight to help you align your tech stack with your business goals. 🔧 What I Do ✅ Custom Blockchain Development – Build solutions tailored to your needs, from the ground up ✅ Smart Contract Development – Design, audit, and deploy secure contracts (ERC-20, ERC-721, ERC-1155) ✅ NFT Marketplace Development – Launch NFT platforms for digital art, real estate, collectibles, and more ✅ **DeFi Protocols** – Develop and integrate staking, farming, token swaps, liquidity pools ✅ **Web3 dApp Development** – User-friendly decentralized applications powered by React, Next.js, and Web3.js ✅ **Crypto Wallet & Exchange Integration** – Secure wallets and seamless crypto transactions ✅ **Blockchain Consulting** – Translate your business idea into a blockchain-ready architecture ✅ **POC/MVP Creation** – Get investor-ready with lean, functional Proof of Concepts ✅ **Private & Permissioned Blockchain Solutions** – Built on Hyperledger, Substrate, or Multichain ✅ **Ongoing Maintenance & Support** – Keep your platforms secure, fast, and up-to-date 💻 Tech Stack I Work With **Blockchain / Smart Contracts** 🔹 Solidity, Rust, Golang 🔹 Ethereum, Solana, Polygon, Binance Smart Chain, Substrate 🔹 ERC-20, ERC-721, ERC-1155 standards 🔹 Truffle, Hardhat, Remix, OpenZeppelin 🔹 Web3.js, Ethers.js, 0x.js 🔹 Metaplex, Anchor, Phantom Wallet Integration 🔹 IPFS, Moralis, OpenSea API 🔹 Crypto Bot and AI Blockchain Tools **Backend Development** 🔸 Node.js, Nest.js, Express.js 🔸 Python, Golang 🔸 PostgreSQL, MongoDB, MySQL 🔸 Firebase, AWS, Azure 🔸 CI/CD: Git, Jenkins, Docker, GitHub Actions **Frontend Development** 🔸 React.js, Next.js, Gatsby, Vue.js 🔸 Tailwind CSS, Material UI 🔸 TypeScript, JavaScript 🧠 Why Clients Work With Me * I take time to **understand your business model**, not just your tech stack * I deliver **clean, scalable, and maintainable code** * I offer **end-to-end solutions**—from concept to post-launch support * I provide **timely communication**, flexibility with time zones, and full transparency * I’ve built **long-term relationships** with clients by being consistent, proactive, and accountable ✅ Let’s Build the Future of Web3 Whether you're launching a **DeFi project**, building an **NFT platform**, or exploring **custom blockchain use-cases**, I can help you build secure, scalable, and user-friendly solutions that deliver real value. 📩 Let’s connect and turn your blockchain vision into reality. 🔍 Keywords (for visibility): blockchain developer, smart contract developer, solidity developer, web3 developer, NFT developer, ethereum developer, solana developer, rust blockchain developer, erc20 developer, erc721 developer, erc1155 developer, defi developer, nft marketplace, crypto wallet developer, smart contracts, full stack blockchain developer, web 3.0 development, ethereum smart contracts, custom blockchain solutions, decentralized app development, dApps, truffle, hardhat, openzeppelin, metaplex, opensea api integration, blockchain consulting, ico development, crypto exchange developer, token development, blockchain maintenance, decentralized finance, layer 1 blockchain, AI crypto bot, blockchain integration

  • Blockchain Architecture
  • Blockchain Development
  • Blockchain, NFT & Cryptocurrency
  • React
  • Node.js
  • PostgreSQL
  • Next.js
  • MongoDB
  • Web3
  • Algorithm Development
  • Quantitative Analysis
  • Solana
  • AI Trading
  • Cryptocurrency Trading
Myroslav K.

Aventura, Florida

$69/hr
5.0
52 jobs

10+ Years as a Full stack developer and Fractional CTO - using React.js, React-Native, Vue.js, Node.js, Next.js, Nest.js, and overall Full stack development in web and mobile. 10+ Years specifically building SaaS projects. SaaS development from MVP to complex high loaded products. 10+ Projects built with high user load in the role of Full stack developer - Delivered robust applications with a 100% job success score. (As an example app called Niya has over 💲 50.000 💲 active users) As a Full stack developer - I’m using in frontend (React, Next.js, React Native Tailwind, shadcn and other style UI libraries, Vercel), backend (Node.js, MongoDB, PostgreSQL) Neon, Render, also deep work with supabase (popular for AI Vibe coding). Also as a Full stack developer I made over 15 apps using React Native CLI and React Native Expo, so I’m open to mobile app developer opportunities. I used to work separately as a web developer only as well. As a Fractional CTO I gained a skill to be more specific on the project stack based on project goals, budget and plans. Performance & Scalability - Being Full stack developer is not only to build and ship it’s also to optimized solutions for speed, SEO, and scalability. I have worked on SEO on domains with high domain authority. Worked a lot with different backend infra providers. Starting some basics, like serverless solutions, finishing AWS services. Agile Collaboration - Transparent communication, iterative workflows, and timely delivery. I used to be on some projects in the role of project manager as well, I know the right way to manage things. I handle the entire development lifecycle, from React Native UI UX design to backend architecture, API integration, cloud deployment, overall a whole full stack delivery.. Hey, I’m Myroslav, a full stack developer and Fractional CTO on steroids with AI usage and large knowledge as a React developer & Senior web developer & IOS developer & Android developer as well. with over 10 years of experience since 2016, specializing in the Full stack development with different technologies React.js, Node.js, Next.js, Nest.js, React-Native CLI, React-Native, Expo, Vue.js, in generally mostly javascript based. I really love mern and mern stack in general, but nowadays I'm using PostgreSQL for most of the projects. My focus as a full stack developer is to deliver a fully functional, and production ready MVP for you within 20-40 days, you don’t need to hire ux designer, I’ll handle everything in house. ). I can even handle your "Replit" or "Base44" or "Lovable" or any other AI/Vibe-coding tools you used to make your project. Making sure that we have a great structure & architecture of the application, and making sure it’s ready to get heavy lifting features later on, and supporting hundreds of thousands requests hourly bases. My Fractional CTO experience will bring a new breath to your project. Industries: In the past I worked a lot with heavy loaded services that requested difficult mapping, maps, routes integration, orders functionality, complex payment integrations. Also worked many times with Health and Wellness, Transport & Geo, Retail, Dating and Lifestyle, Food Delivery, Fintech and Banking, Entertainment and Media, Logistics and Manufacturing, Productivity and Education, Marketplaces and Advertising, Automotive and Travel. Frameworks and staff: as a full stack developer, I used a lot of mern and mern stack. I also have experience working as a react developer or web developer only, and full stack developer django in the past. For the last 4 years I've been actively going deep into LLMs and machine learning which is mostly python based, so I’d say I can call myself a senior python developer as well. Let’s Connect! GET YOUR MVP WITHIN 20 DAYS! Click the “Invite to Job” button, and let’s discuss turning your idea into reality.

  • API
  • HTML
  • JavaScript
  • CSS
  • React
  • Node.js
  • Web Application
  • Software Development
  • Full-Stack Development
  • API Integration
  • PHP
  • Python
  • Vue.js
  • Laravel
  • WordPress
  • HTML5
  • Tailwind CSS
  • Web Design
  • Software Architecture & Design
  • MySQL
Tyler R.

New York City, New York

$20/hr
5.0
3 jobs

College Graduate with an Associate's Degree in Computer Science. Curious and determined programmer, constantly searching for challenges, finding pleasure in problem-solving, and driven by results. Experienced with object-oriented programming, allowing the ability to develop, test, and debug code effectively, and ensure clients receive reliable and efficient solutions. Prioritizing the needs of clients, always eager to learn and master new technologies, ensuring that top-notch services are provided. Dedicated to delivering the best results ensuring that every project is approached with 100% effort, and taking great pleasure in solving difficult problems to fulfill clients' requirements effectively.

  • Computer Science
  • HTML
  • C++
  • CSS
  • JavaScript
  • Microsoft Excel
  • Microsoft Visual Studio
  • Tech & IT
  • SQL
  • Python
  • Web Development
  • Software Development
  • Microsoft Office
  • Troubleshooting
Nida M.

Clifton Park, New York

$30/hr
4.5
78 jobs

Hi, I'm Nida; a website designer and full-stack developer with 6+ years of proven experience building high-performing websites for startups, ecommerce brands, and service businesses. What I Do I design and build custom websites that blend strategy, UX, and clean development. My approach ensures your website is visually strong, fast-loading, conversion-focused, and reflects your brand identity. Core Services ✔ Website Design & UI/UX (Figma wireframes to pixel-perfect builds) ✔ WordPress Website Design & Custom Theme Development ✔ Shopify Store Design & Theme Customization ✔ Full-Stack Development: Design → CMS Setup → Launch → SEO ✔ Landing Page Design for Lead Generation & Sales ✔ WooCommerce & Ecommerce Solutions ✔ CMS Development (Webflow, Wix, Squarespace) ✔ Conversion Rate Optimization & Performance Tuning ✔ Mobile-First, Responsive, Accessibility-Ready Builds My Process 1. Discovery: Understand your brand, audience, competitors, and business goals 2. UX Architecture: Wireframes and user flows designed for clarity and conversions 3. UI Design: Modern, brand-aligned designs in Figma before any development 4. Development: Pixel-perfect, responsive builds with custom functionality 5. Optimization: Speed, SEO, accessibility, and conversion improvements 6. Support: Training and post-launch support to keep things running smoothly Why Work With Me ✓ End-to-end solutions from strategy to launch ✓ Proven track record: $80k+ completed projects ✓ Clear communication with regular progress updates ✓ Fast turnaround and responsive to feedback ✓ Selective with projects, quality over volume ✓ Experience across ecommerce, SaaS, agencies, wellness, nonprofits, and more I'm selective about the projects I take on because I've learned that the best results come from clear communication, aligned expectations, and genuine partnership with clients who value quality work. If you're looking for a website that's strategic, well-designed, and built to perform, let's talk about your project. Send me a message and I will guide you through the ideal structure and approach for your project. Warm regards, Nida Muzammil. ⭐You can also find me through searches related to: Website Design, Web Designer, UI Design, UX Design, UI/UX Designer, Web Development, WordPress Developer, Shopify Developer, Front End Development, Figma Designer, Landing Page Design, Conversion Focused Website Design, Custom WordPress Website, WooCommerce Developer, Shopify Theme Developer, Liquid Developer, Elementor Expert, Divi Expert, Webflow Designer, Wix Designer, Squarespace Designer, Framer Designer, CMS Developer, Responsive Website Design, Mobile Friendly Web Design, Website Redesign, High Fidelity UI Design, User Flow Design, Wireframing, Prototyping, Modern Website Design, Minimal Website Design, Aesthetic Website Design, Luxury Website Design, SaaS Website Design, Ecommerce Website Design, Service Business Website, Startup Website, Portfolio Website, Custom CMS Development, ACF Developer, Custom Post Type Developer, PSD to WordPress, Figma to WordPress, Figma to Shopify, Figma to Webflow, Frontend Animations, Homepage Design

  • WordPress

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