Hire the best Smart Contracts Developers in Spain
Check out Smart Contracts Developers in Spain with the skills you need for your next job.
- $55 hourly
- 5.0/5
- (4 jobs)
+15 years of experience as Full Stack web developer always interested in new technologies and methodologies. Hands-on team leader providing executive leadership, technical expertise and product management. I write clean and high quality code on time in many different languages and frameworks. Experienced with lots of languages, frameworks, platforms and libraries. In lasts projects: Creaton: - FE (Typescript, React+hooks, antd, tailwind, ethers.js, NuCypher, LitProtocol) - SC (Solidity. Upgradable, Metatx (Biconomy), SuperFluid) - TheGraph Coinvise: - FE (Typescript, React+hooks, antd, tailwind, ethers.js) - Backend (Typescript, Koajs, posgresql) - SC (Solidity. Upgradable, Metatx (Biconomy)) Youcheck: - Frontend: React - Redux - Saga using Ant Design based components - Backend: Typescript on Koajs using Posgresql with TypeOrm - Some services used: GitlabCI, Docker, Sendgrid, Stripe, Cloudflare, Google Compute Engine Adf.ly (and microservices). Used a lots of stuff, worth mentioning: - Go Lang / Echo framework - Twitter Bootstrap - Mysql / MongoDB / Google Bigquery - CakePHP / Lumen (Laravel) / Silex (Symfony) - PHPCI - Memcache, Redis - Elasticsearch - Python - Docker, Vagrant
Smart Contracts
SolidityNode.jsMongoDBTwitter/X BootstrapRedux SagaMySQLBlockchainDAppsTypeScriptweb3.jsSmart ContractCakePHPCryptocurrencyReact - $60 hourly
- 4.9/5
- (12 jobs)
Hello. Thanks for visiting my profile. My name is Alex Corcuera and I am from Spain. I have 7+ years of experience in React web app development and all of the JavaScript-based web frameworks. As well as web development skills, I also have strong blockchain background and experience. Especially, I can speak native English. I am sure I can be a big help for your project and business. Hope to build a strong relationship with you. Thanks.
Smart Contracts
AutomationEthereumweb3.jsSoliditySmart ContractJavaScriptBlockchainReduxBack-End DevelopmentNode.jsReact - $38 hourly
- 5.0/5
- (1 job)
𝗜 𝗵𝗲𝗹𝗽 𝗰𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀 & 𝗲𝗻𝘁𝗿𝗲𝗽𝗿𝗲𝗻𝗲𝘂𝗿𝘀 𝗯𝘂𝗶𝗹𝗱 𝘁𝗵𝗲 𝗯𝗲𝘀𝘁 𝗪𝗲𝗯𝟯 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗮𝗻𝗱 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗯𝗿𝗮𝗻𝗱𝘀 📈 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗦𝗖𝗔𝗟𝗔𝗕𝗟𝗘 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗮𝗻𝗱 𝗦𝗧𝗥𝗔𝗧𝗘𝗚𝗜𝗖 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗶𝗻𝗴 🔥 +175 projects, +20M in revenue, +3M in funds raised 𝗔𝗹𝗹 𝗼𝗳 𝘁𝗵𝗲𝗺 𝘁𝗮𝗸𝗲𝗻 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗺𝘆 𝗔-𝗭 𝗽𝗿𝗼𝗰𝗲𝘀𝘀 𝘁𝗼 𝗰𝗿𝗲𝗮𝘁𝗲 𝘁𝗵𝗲 𝗯𝗲𝘀𝘁 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗮𝗻𝗱 𝗶𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 𝗲𝗻𝘀𝘂𝗿𝗶𝗻𝗴 𝘀𝗲𝗰𝘂𝗿𝗶𝘁𝘆 & 𝗲𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝗰𝘆. 🎯 "𝙉𝙤 𝙦𝙪𝙚𝙨𝙩𝙞𝙤𝙣𝙨 𝙖𝙨𝙠𝙚𝙙, 𝙩𝙝𝙞𝙨 𝙜𝙪𝙮 𝙞𝙨 𝙩𝙝𝙚 𝙗𝙚𝙨𝙩 𝙤𝙛 𝙩𝙝𝙚 𝙗𝙚𝙨𝙩. 𝙄 𝙝𝙖𝙫𝙚 𝙙𝙤𝙣𝙚 𝙖 𝙫𝙚𝙧𝙮 𝙩𝙝𝙤𝙧𝙤𝙪𝙜𝙝 𝙧𝙚𝙨𝙚𝙖𝙧𝙘𝙝 (𝙛𝙤𝙧 𝙬𝙚𝙚𝙠𝙨!) 𝙩𝙤 𝙛𝙞𝙣𝙙 𝙖 𝙧𝙚𝙖𝙡𝙡𝙮 𝙜𝙤𝙤𝙙 𝙗𝙡𝙤𝙘𝙠𝙘𝙝𝙖𝙞𝙣 𝙙𝙚𝙫𝙚𝙡𝙤𝙥𝙥𝙚𝙧, 𝙖𝙣𝙙 𝙝𝙚 𝙚𝙭𝙘𝙚𝙚𝙙𝙚𝙙 𝙢𝙮 𝙚𝙭𝙥𝙚𝙘𝙩𝙖𝙩𝙞𝙤𝙣𝙨 1000%. 𝙉𝙤𝙩 𝙤𝙣𝙡𝙮 𝙝𝙚 𝙞𝙨 𝙫𝙚𝙧𝙮 𝙥𝙧𝙤𝙛𝙚𝙨𝙨𝙞𝙤𝙣𝙖𝙡 𝙖𝙣𝙙 𝙨𝙠𝙞𝙡𝙡𝙚𝙙 𝙬𝙝𝙚𝙣 𝙞𝙩 𝙘𝙤𝙢𝙚𝙨 𝙩𝙤 𝙘𝙪𝙨𝙩𝙤𝙢𝙞𝙯𝙚 𝙨𝙢𝙖𝙧𝙩 𝙘𝙤𝙣𝙩𝙧𝙖𝙘𝙩𝙨, 𝙢𝙞𝙣𝙩𝙞𝙣𝙜 𝙬𝙚𝙗𝙨𝙞𝙩𝙚𝙨, 𝙗𝙪𝙡𝙠 𝙪𝙥𝙡𝙤𝙖𝙙𝙨 𝙩𝙤 𝙤𝙥𝙚𝙣𝙨𝙚𝙖, 𝙨𝙚𝙩𝙩𝙞𝙣𝙜 𝙨𝙚𝙧𝙫𝙚𝙧𝙨 𝙚𝙩𝙘, 𝙗𝙪𝙩 𝙝𝙚 𝙞𝙨 𝙖𝙡𝙨𝙤 𝙫𝙚𝙧𝙮 𝙣𝙞𝙘𝙚, 𝙥𝙖𝙩𝙞𝙚𝙣𝙩, 𝙖𝙣𝙙 𝙝𝙚𝙡𝙥𝙨/𝙛𝙞𝙭𝙚𝙨/𝙖𝙙𝙟𝙪𝙨𝙩𝙨 𝙙𝙪𝙧𝙞𝙣𝙜 𝙩𝙝𝙚 𝙬𝙝𝙤𝙡𝙚 𝙥𝙧𝙤𝙘𝙚𝙨𝙨. 𝙄 𝙝𝙞𝙧𝙚𝙙 𝙖 𝙙𝙤𝙯𝙚𝙣 𝙥𝙚𝙤𝙥𝙡𝙚 𝙛𝙤𝙧 𝙢𝙮 𝙉𝙁𝙏 𝙥𝙧𝙤𝙛𝙚𝙘𝙩, 𝙖𝙣𝙙 𝙩𝙝𝙞𝙨 𝙬𝙖𝙨 𝙗𝙮 𝙛𝙖𝙧 𝙢𝙮 𝙜𝙧𝙚𝙖𝙩𝙚𝙨𝙩 𝙚𝙭𝙥𝙚𝙧𝙞𝙚𝙣𝙘𝙚. 𝙏𝙝𝙖𝙣𝙠𝙨 𝙖 𝙡𝙤𝙩 𝘼𝙣𝙞𝙤𝙡 😀" ⭐️⭐️⭐️⭐️⭐️ 🗣 Tom Olssen - Vengeaful Beasts 🗣 𝗟𝗶𝗸𝗲 𝘄𝗵𝗮𝘁 𝘆𝗼𝘂’𝗿𝗲 𝗵𝗲𝗮𝗿𝗶𝗻𝗴? 𝗜𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗷𝗼𝗯 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝘁𝗼 𝘀𝗰𝗵𝗲𝗱𝘂𝗹𝗲 𝗮 𝗙𝗥𝗘𝗘 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 𝗰𝗮𝗹𝗹 𝘁𝗼 𝗳𝗶𝗻𝗱 𝗼𝘂𝘁 𝗶𝗳 𝘄𝗲 𝗰𝗮𝗻 𝗯𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗮𝗺𝗮𝘇𝗶𝗻𝗴 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 🔎 𝗛𝗲𝗿𝗲’𝘀 𝘄𝗵𝗮𝘁 𝘀𝗲𝘁𝘀 𝗺𝗲 𝗮𝗽𝗮𝗿𝘁 𝗳𝗿𝗼𝗺 𝗮𝗻𝘆𝗼𝗻𝗲 𝗲𝗹𝘀𝗲 𝘆𝗼𝘂 𝗰𝗼𝘂𝗹𝗱 𝗵𝗶𝗿𝗲 𝘁𝗼 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂: 🔸 I deliver exceptional results from the start. Many clients reach out to me after trying less experienced talent or in-house solutions that didn’t meet their expectations. By choosing me, you’re securing a product that will make you proud and run smoothly for years to come. 🔸 You’re never reliant on me to stay in control! My development approach emphasizes clear, ongoing communication and transparency. I ensure that you have full ownership and understanding of everything built. 🔸 Working closely with Blockchain companies has allowed me to establish exclusive partnerships with some of the most prominent names in the Web3 industry. From Marketing, PR, Go-to-Market Strategy, and Tokenomics to NFT Strategy, Legal Structure Setup, VC Fundraising, and KOL, I offer comprehensive expertise. 🔸 Security is never compromised. Too many times in the Web3 world we see projects getting shattered - funds stolen, servers crashing, trust from users lost. That’s why I include thorough quality assurance testing at every stage, with final checks before your product is delivered. 𝗜𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗷𝗼𝗯 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝘁𝗼 𝘀𝗰𝗵𝗲𝗱𝘂𝗹𝗲 𝗮 𝗙𝗥𝗘𝗘 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 𝗰𝗮𝗹𝗹 𝘁𝗼 𝗳𝗶𝗻𝗱 𝗼𝘂𝘁 𝗶𝗳 𝘄𝗲 𝗰𝗮𝗻 𝗯𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗮𝗺𝗮𝘇𝗶𝗻𝗴 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 🔎 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦 & 𝗦𝗢𝗟𝗨𝗧𝗜𝗢𝗡𝗦: ✅ Ethereum / Solana / BSC / Polygon (EVM) Customized Smart Contract Development ✅ Blockchain & Web3 Consultation (Smart Contract Ecosystem Design, Tokenomics, Whitepaper) ✅ EVM Smart Contract Audits (Automated Testing, Security Breach Search, Gas Efficiency, etc.) ✅ NFT Collection (ERC721 / ERC721A / ERC1155) creation (Whitelist, Shareholder Dividends, Burn mechanism, Reveal/Unreveal, Access Control, etc.) ✅ NFT Minting Dapps ✅ NFT Staking Contracts + Staking Dapps ✅ ERC20 Tokens (Basic Tokenomics, Staking Features, Buy Limits, Fees, etc.) + ICOs / IDOs ✅ DAOs ✅ NFT Marketplace ✅ Decentralized Exchange (Uniswap / Pancakeswap) ✅ Launchpad (Seedify) ✅ Yield Farming + DeFi Protocol ✅ Image & Metadata Generation Algorithm for NFT Artwork + IPFS Upload ✅ Solana NFT Smart Contract + Minting Dapp (Candymachine, Metaplex) ✅ 2D & 3D Graphic Design, Animations, and Promo Teaser Videos 𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞: ✅ Solidity, Hardhat / Truffle / Remix, Slither, Ethereum / Binance / Polygon / Avalanche / Optimism / Solana ✅ React.JS + Next.JS (Web3.JS, ethersJS), AngularJS, HTML, CSS & JavaScript (jquery, Bootstrap) ✅ Node.js, NestJS, ExpressJS, Docker, Python, Amazon AWS, MongoDB, MySQL ✅ Figma, AdobeXD, PSD ✅ Github / Gitlab / Bitbucket, Slack, Trello / Notion / Clickup / Jira 𝗜𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗷𝗼𝗯 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝘁𝗼 𝘀𝗰𝗵𝗲𝗱𝘂𝗹𝗲 𝗮 𝗙𝗥𝗘𝗘 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 𝗰𝗮𝗹𝗹 𝘁𝗼 𝗳𝗶𝗻𝗱 𝗼𝘂𝘁 𝗶𝗳 𝘄𝗲 𝗰𝗮𝗻 𝗯𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗮𝗺𝗮𝘇𝗶𝗻𝗴 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 🔎
Smart Contracts
Blockchain ArchitectureAPINFTSoliditySolanaPythonSmart ContractEthereumJavaScriptNode.jsCryptocurrencyReactNext.jsBlockchain DevelopmentBlockchain - $50 hourly
- 4.9/5
- (19 jobs)
# Roles - Agile project manager / engineering manager / lead developer / developer. # Current availability - Part-time. # Current interests - Web3, DeFi, Blockchain, Fintech, Crypto. - Software development productivity and good practices for small to mid-sized teams. - Challenging projects and learning new things (any role, including developer). - React.js, Angular.js, Nest.js, Express.js, Node.js, MongoDB, cloud (Docker, Kubernetes). # Experience - December 2021 - current: crypto market and modern banking startup. Project manager / engineering manager / technical director directly reporting to the CEO & founders. - March 2017 - May 2020: Power Software Consulting. Lead developer (MEAN stack) for a complex multimedia CMS. - August 2011 - August 2014: MockupScreens.com. Project manager. - July 2005 - current: Freelancer.com and other markets. Freelance developer. More than 400 projects successfully completed, being one of the top-rated developers. # Education - 2003-2009 Public University of Spain: Technical Engineer in Telecommunications (BSc. Degree equivalent in the USA). # Languages - English: - Writing: almost native. - Speaking: good. - Spanish: native. # Other - I have been using (GNU?/)Linux as my main OS for many years, and I have a preference for open-source software.
Smart Contracts
BlockchainSmart ContractNestJSAgile Software DevelopmentReactAngularMongoDBJavaScriptAngularJSPHPNode.jsMySQLJava - $70 hourly
- 4.9/5
- (55 jobs)
I’m a full-stack developer with a focus on Python, Django, and web technologies (Vue.js), bringing expertise in both front-end and back-end development. I’ve had the opportunity to work with a wide range of clients, helping them achieve their goals with high-quality, efficient solutions. I pride myself on being proactive in solving problems and maintaining excellent communication throughout every project. My clients appreciate my ability to understand their needs, provide insightful suggestions, and offer innovative approaches that improve the final product. I’ve worked on various projects, including DeFi applications, complex data visualization systems, and custom web solutions. I’m always open to learning new technologies to meet the evolving requirements of a project, and I adapt quickly to changes. Whether I’m working individually or in a small team, I ensure that projects stay on track with a focus on quality and detail. I strive to make the development process as smooth as possible for my clients and value building strong, long-lasting professional relationships. If you’re looking for a reliable, skilled developer who can not only meet your expectations but exceed them, I’d be happy to discuss how I can help with your next project. Main experiences: Create, maintain, and extend web applications based on Python\Django. Front-end development using Vue.js, Nuxt.js, Figma\PSD. Web3 Software: PyCharm Professional, Trello, Github, Github Copilot. Hardware: i9-14900KF, 32GB RAM, SSD, RTX 4070ti, Meta Quest 3.
Smart Contracts
Front-End DevelopmentSmart ContractHerokuStripeSolidityBack-End DevelopmentDigitalOceanRESTful APIWebsiteWeb DevelopmentWeb ApplicationCSSDjangoJavaScriptThree.jsNuxt.jsPython - $50 hourly
- 4.9/5
- (222 jobs)
👉 Currently, I am working as a 🚀 Python, React, AI, OpenAI, and Web 3.0 Developer, with hands-on experience in 🤖 ChatGPT, 🎨 DALL-E 2, and 🗣️ Whisper. 👨💻 I have been deeply involved in web development for over 8 years and bring more than 12 years of experience in programming. Although I hold a degree in 🎓 Theoretical Physics, I have discovered my true passion lies in cutting-edge internet technologies, including 🌐 Web Development, 🧠 AI, and 🌍 decentralized Web 3.0 solutions on the blockchain. My extensive experience spans across a broad spectrum of technologies, with a strong focus on 🐍 Python, AI development, and blockchain integration. 💼 In my current role, I specialize in creating and optimizing Web3 and blockchain solutions, leveraging the power of Python, Django, and AI to build scalable, secure, and innovative applications. My background also includes extensive work in developing high-performance, AI-driven systems and integrating these with decentralized platforms, positioning me at the intersection of AI and blockchain. 🛠️ Technologies I am experienced with: Python, Django, AI, Web3, Blockchain, .NET, C#, JS, Linux, among others. 📂 GitHub: @cesarlpb
Smart Contracts
PythonDjangoTutoringRESTful ArchitectureRESTful APIAPI DevelopmentC#SolidityAPIEthereumBlockchainSmart ContractWeb DevelopmentEnglish - $16 hourly
- 5.0/5
- (6 jobs)
Hello! I am César from Spain, I have more than 5 years of experience as a web designer, blockchain and web developer. Let's make your proposal a reality: ✅ Web Design ✅ Web Development ✅ Dapp Development ✅ Blockchain Development ✅ Wordpress ✅ Figma to Web ✅ HTML, CSS, JS, React, Angular, ect...
Smart Contracts
Web3EthereumNFTNFT MintingSoliditySmart ContractNFT Collection GenerationBlockchain, NFT & CryptocurrencyNFT MetadataBlockchain DevelopmentBlockchainFigmaWeb DesignWeb Development - $80 hourly
- 0.0/5
- (1 job)
👋 Hey there! I'm Ignacio, fullstack Web3 Developer. I craft smart contracts with Solidity and I am focused on NFTs and blockchain gaming. 🛠️ Blockchain Mastery: Smart Contracts: I code with Solidity, using both Hardhat and Foundry. Token Standards: From ERC721 and ERC1155 to the cutting-edge ERC6551, you can use them way beyond just PFPs – think token-gated communities, blockchain gaming, marketplaces, and more! Upgradability: I've delved deep into upgradable patterns and proxy contracts. 💻 Beyond Blockchain: Frontend: Other than the hardcore blockchain work, I enjoy building frontends with Next.js(anyone else a fan of v13?) and making them interact with smart contracts using ethers.js, wagmi and viem </br> Backend: Sometimes I find myself creating a Merkle Tree for an allowlist, setting up dynamic metadata for NFTs, or architecting subgraphs for a marketplace contract, and that's fun!
Smart Contracts
NFTEthers.jsWeb3SoliditySmart ContractNode.jsTypeScriptReact - $200 hourly
- 5.0/5
- (3 jobs)
I am software developer with 7 years experience who focuses on quality, execution and speed. I have built different products across many industries and I always prioritize to build the right things in a simple way. Some of this products currently have more than 1 million visits per month. I have also won 8 prizes across different hackathons in the world during 2023. These are my main areas of expertise: 01. Smart Contract Development. (Solidity, Foundry, Hardhat, NFTs, DEFI, DAOs). 02. Web Development. (React, Typescript, Javascript, NextJS, HTML, CSS). 03. Mobile and Desktop Applications. (Capacitor and Electron). 04. APIs, Databases, Infrastructure. (NodeJS, MongoDB, SQL). 05. Product Design and UX. 06. SEO Optimization. 07. MongoDB Optimization. 08. AWS Cloud Infrastructure. (ECS, ECR, EFS, EC2, Route 53, S3 and VPC). I am passionate about understanding my clients' needs and delivering tailored solutions that exceed their expectations. If you're looking for a dedicated and skilled developer to bring your project to life, I am here to help. Please feel free to explore my portfolio to see some of my past projects and get in touch to discuss how I can contribute to your success.
Smart Contracts
DAppsNFTSmart ContractCryptocurrencySolidityBlockchain ArchitectureAPINext.jsDesktop ApplicationAmazon Web ServicesReactTypeScriptNode.jsJavaScriptMongoDB - $50 hourly
- 0.0/5
- (0 jobs)
PROFILE I am a Senior Full-Stack developer with more than 5 years of working experience. Once you decide, I will make it real for you. Because of my breadth of experience, I believe that I could make you 100% satisfied. My expertise spans over a vast range of services, which includes: ~~~~~~~~~~Web development.~~~~~~~~~~ - JS frameworks: Angular, React, Vue.js, Next.js, React-Native etc. - PHP frameworks: Laravel, CodeIgniter etc. - Python framework: Django. - DB: MySQL, Oracle, MongoDB ~~~~~~~~~~Blockchain development~~~~~~~~~~ - ERC-20 Token | ERC-721 NFT Token , Solidity - Web3.js | Ethers.js | JSON-RPC - Ethereum, Binance, PancakeSwap, Solana Ecosystem ~~~~~~~~~Mobile development~~~~~~~~~ React Native, Flutter , Ionic I have been exposed to a wide variety of technologies in my career and consider myself to be very adaptable. I work to ensure that all my work is error-free, on-time, and done precisely to the client's expectations.
Smart Contracts
FlutterSmart ContractReact NativeFront-End DevelopmentCodeIgniterReactBlockchainPHP - $35 hourly
- 0.0/5
- (0 jobs)
Having worked with many blockchain companies, along with big companies, I’m confident not only in my abilities but my professionalism. I constantly stay ahead of the game, learning and mastering all the relevant software applications and tools necessary to create the most efficient web and software apps in the industry.
Smart Contracts
Smart Contractweb3.jsSolidityCrypto Exchange PlatformBlockchainCrypto Wallet DevelopmentDAppsNFTBlockchain, NFT & CryptocurrencyFull-Stack DevelopmentNode.jsJavaScriptTypeScriptReactNext.js - $48 hourly
- 0.0/5
- (0 jobs)
Hi, My name is Raul, a senior full stack developer with rich experience. I like programming and worked on many game & blockchain projects. I find daunting problems fun and entertaining in my fast-paced mind. Finding new technologies always excites me and I find it so amazing that there are always new ones coming out every day. I have a passion to teach new people age them to continue working hard every day. thanks!
Smart Contracts
RustWeb DevelopmentThree.jsWebGLWeb3UnityGame DevelopmentSmart ContractNFTSolidityBlockchainReact NativePython - $40 hourly
- 0.0/5
- (0 jobs)
Thank you for visiting my profile. I am a full stack developer with over 10 years of rich experience in web & blockchain development and project management. Enthusiasm , challenge-driven, test-driven are my favorites. Always ready for web development using Python/Django/Flask, Node/Express/Next, React/Angular/Vue/Web3.js and blockchain development using Solidity/Vyper. - Back-end Development * Python / Django, Flask, Ruby / Ruby on Rails * Node.js / Express.js / Nest.js * AWS (EC2, S3, Serverless, etc) * PHP / Laravel - Front-end Development * Advanced JavaScript frameworks - React/Redux, Angular, Vue.js, Next.js, Nuxt.js * General web technologies - HTML5, CSS3(SASS/LESS/SCSS), Bootstrap, jQuery * Languages - JavaScript ES6/7, Typescript - Blockchain Development * Ethereum Smart Contract(Solidity, Vyper) * ERC20, ERC777, ERC721, ERC1155 Token development * NFT(minting, marketplace with attracting UI and IPFS in Ethereum, Cardano, Binance, Solana, etc) * Web3.js and digital wallet integration like MetaMask, Phantom -Database *Non-realational Database: MongoDB, AWS Lambda *Relational Database: MySQL, PostgreSQL, Oracle - Other * Management Tools: Jira, Trello * Operating Systems: Linux, Windows * Tools: GitHub, GitLab, BitBucket, Docker, Kubernetes I always enhance my skills and learn new technology/languages/systems. I prefer to join large and long-term projects. Willing to work with you and make your idea into results-focused and world-class project. Able to work full time on your time zone. Thank you
Smart Contracts
React NativeShopifyBlockchain, NFT & CryptocurrencyUnreal EngineCardanoSolanaSoliditySmart ContractWordPressPythonLaravelRuby on RailsVue.jsReactRust - $35 hourly
- 0.0/5
- (0 jobs)
A professional blockchain developer - Ethereum, Polygon, Avalanche Solidity is my tack and sharp skill.
Smart Contracts
RustReactNFT MarketplaceSolidityNFT MintingERC-721BlockchainMERN StackEthereumSmart ContractBlockchain ArchitectureNFTJavaScriptPython - $40 hourly
- 0.0/5
- (0 jobs)
Thank you for visiting my profile. I am a full stack developer with over 10 years of rich experience in web & blockchain development and project management. Enthusiasm , challenge-driven, test-driven are my favorites. Always ready for web development using Python/Django/Flask, Node/Express/Next, React/Angular/Vue/Web3.js and blockchain development using Solidity/Vyper. - Back-end Development * Python / Django, Flask, Ruby / Ruby on Rails * Node.js / Express.js / Nest.js * AWS (EC2, S3, Serverless, etc) * PHP / Laravel - Front-end Development * Advanced JavaScript frameworks - React/Redux, Angular, Vue.js, Next.js, Nuxt.js * General web technologies - HTML5, CSS3(SASS/LESS/SCSS), Bootstrap, jQuery * Languages - JavaScript ES6/7, Typescript - Blockchain Development * Ethereum Smart Contract(Solidity, Vyper) * ERC20, ERC777, ERC721, ERC1155 Token development * NFT(minting, marketplace with attracting UI and IPFS in Ethereum, Cardano, Binance, Solana, etc) * Web3.js and digital wallet integration like MetaMask, Phantom -Database *Non-realational Database: MongoDB, AWS Lambda *Relational Database: MySQL, PostgreSQL, Oracle - Other * Management Tools: Jira, Trello * Operating Systems: Linux, Windows * Tools: GitHub, GitLab, BitBucket, Docker, Kubernetes I always enhance my skills and learn new technology/languages/systems. I prefer to join large and long-term projects. Willing to work with you and make your idea into results-focused and world-class project. Able to work full time on your time zone. Thank you
Smart Contracts
React NativeShopifyBlockchain, NFT & CryptocurrencyUnreal EngineCardanoSolanaSoliditySmart ContractVue.jsPythonLaravelRustRuby on RailsWordPressReact - $35 hourly
- 0.0/5
- (0 jobs)
I am a blockchain developer and full stack engineer with 6+ years of experience in Web sites developing and now on Freelancer platform to put my skills into this field. I am confident that you will be satisfied with the quality, timelines of my work and my responsibility. I am very skilled in below areas. -Solana Blockchain -Blockchain coin forking, Smart Contract for DApp -Cryptocurrency Exchange System, DeFi, Gambling -Uniswap & Pancakeswap for Limit Order and Market Order -Wallet for Web & Mobile -ICO Development with created Token (Coin) -Token Development(ERC20, ERC223, ERC721, BEP20) -NFT(Non Fungible Token) Marketplace -Hyperledger, Stellar My skilled languages: -solidity, Truffle framework and Web3.js -Javascript/Typescript, React.js, Vue.js and Node.js -MySQL, SQLite, MongoDB, PostgreSQL You give me chance, I will give you satisfaction. Feel free to reach me anytime regarding discussion of your project. I always try to deliver my best in every single project. I am willing to be a part of your success story. Thanks
Smart Contracts
GSAPNFT MarketingNFT MintingBlockchainSoliditySmart ContractUnityVue.jsAngularNode.jsReactThree.jsRustWebGL - $35 hourly
- 0.0/5
- (0 jobs)
I have 6 years of Blockchain Full-Stack Engineer experience. I would like to apply for this position with 100% confidence about technical specifications and requirements of Blockchain and Full-Stack project. While working as a Web Developer I have strong knowledge and enough experience with different JavaScript frameworks and libraries, was able to complete more than 10 complex websites and web applications using them. I always prefer long term projects, always want to build real trustworthy with clients.
Smart Contracts
EthereumCryptocurrencyBlockchainNFTSolanaSoliditySmart Contractweb3.jsTruffleJavaScriptExpressJSNode.jsNext.jsReactTypeScript - $40 hourly
- 0.0/5
- (0 jobs)
⭐WELCOME!!!⭐ Thanks for your interesting. I have solid knowledge in programming and have 8+ years experience. Strong experience in Web/App development, Machine Learning, Blockchain, etc. My goal is to make sure you are satisfied with your project and it’s delivered on time and within your budget. AREAS OF EXPERTISE: ⭐Blockchain, Solidity, Smart Contact Web3 ⭐C/C++/C#/Python/Java/Matlab ⭐Web Development ✔️MERN, MEVN & MEAN stack, ✔️HTML/CSS/Javascript, Bootstrap, jQuery, Tailwind CSS, SCSS ✔️React.js, Redux, React Bootstrap, React Material UI, Redux, Redux-Sega, Nextjs, Semantic UI, React Motion, React Fuse, etc ✔️Vue, Vuex, Vuetify, BootstrapVue, Buefy, CoreUI Vue, Vue Material, Keen UI, ✔️D3.js, C3.js, Chart.js, HighCharts, AnyChart, Plotly, Morris charts, etc ✔️REST API, GraphQL ✔️Typescript, Node.js, Express.js, Nestjs, Meteor.js, and other JS frameworks. ✔️PHP, Codeigniter, Laravel, Symphony, CakePHP, Wordpress, Joomla ✔️Python, Flask, Django, Web2py, Pyramid ✔️ASP.NET, Swagger, Saaskit, Azure, Agile ✔️MySQL, MariaDB, MongoDB, PostgreSQL, MSSQL, etc ⭐Image Processing, Image Recognition, ⭐Data science, Data Processing, Web Scraping ⭐OpenGL, Unity3D, Game Development ⭐Algorithm, Mathematics, Machine learning, Deep Learning ⭐⭐⭐DESIGN|ART MASTER⭐⭐⭐ Warm Regards
Smart Contracts
MERN StackEthereumSoliditySmart Contractweb3.jsUnityBlockchain, NFT & CryptocurrencySolanaMySQLVue.jsLaravelC#PythonJavaScriptPHP - $44 hourly
- 0.0/5
- (0 jobs)
!! 𝐒𝐞𝐧𝐢𝐨𝐫 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 !! I have extensive experience with Blockchain projects. During the last few years I have had many big & complex projects. I have solid understanding and professional experience with: — Blockchain — Ethereum — Smart contracts — Web3.js — MetaMask — ERC-721 — Token development — NFTs — Cryptocurrencies 𝐈 𝐂𝐀𝐍: * design blockchain protocols & network architecture, * design the network architecture that can be used for the centralizing or decentralizing the data, * design security patterns for the network, * supervise the network, plan and manage the development process, * develop Smart Contracts, * develop Blockchain application on Ethereum/Web3, * develop interactive and high-quality front-end designs for Dapps, * develop backend according to the Blockchain protocols, * develop front-end designs according to client requirements, * design secure blockchain technologies, * develop application features and interfaces, * maintain client and server-side applications. 𝐈 𝐇𝐀𝐕𝐄: - English language proficiency, good communication skills - Ability to work on my own and provide high-quality results - Ability to manage time effectively and meet deadlines - Problem solving and bug-fixing skills 𝐌𝐲 𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲: - Full-time (40hrs/week) - Long-term - Immediate start Leave a short message to discuss further your project details.
Smart Contracts
NFT MarketplaceEthereumContractNFTSoliditySmart ContractNFT MintingBlockchain ArchitectureBlockchainSolanaReactNode.jsMongoDBNext.jsBootstrap - $40 hourly
- 0.0/5
- (0 jobs)
I am writing to you in reference to the job posting you have made. I believe I would be an excellent fit for this position since I am a software engineer with a wide variety of experience in the field. I tend to view myself as a generalist since I try not to focus on any given technology. My skills range from PHP(CI, Laravel), Node, React, Vue, Angular, Ruby On Rails, Java, Swift, React-Native, Flutter, Django to Mysql, Postgres, MongoDB, and I have 8 years of experience. For 3 years I focused on the Blockchain skill such as Solidity and Solana. Especially, I have good experience in Solana. As a software engineer, I'm familiar with GitHub, GitLab, etc for version control and Jira and Trello for tasks management. Also, I'm familiar with several kinds of testing systems. I have been exposed to a wide variety of technologies in my career and consider myself to be very adaptable. Sincerely,
Smart Contracts
EthereumCryptocurrencyNFTSoliditySmart ContractReact NativeWeb3BlockchainBlazorJavaScriptC#C++PythonReactASP.NET - $60 hourly
- 0.0/5
- (0 jobs)
I’m a Blockchain expert having 6 years of experience in developing decentralized solutions. I'm a crypto trader and blockchain enthusiast. With my leadership and Fintech business knowledge I helped companies to grow and uphold. I worked on multiple start-up projects related to blockchains and cryptocurrency, gaining experience covering blockchain, consensus algorithms, Hyperledger, bitcoind, geth, ethminer, JSON RPC, transactions, testnets, on-chain atomic swaps, cryptocurrency mining, coin trading, centralized and decentralized exchanges, and crypto ecosystem modeling. I have developed multiple DAPP’s by writing smart contracts on Ethereum, Binance Smart chain, Solana and Tron. Also making sure that all the test cases are completed in Chai Mocha. I also have hands-on experience with ERC standards like ERC20, ERC721, ERC998, ERC1155, ERC223, ERC1400, etc. I use my FullStack skills (MERN Stack) to interact with smart contracts in Web Applications. Have run my own full nodes of BTC, ETH, DASH, XRP, LTC along with ERC20 deposit withdrawal functionality for mobile wallets and crypto exchanges. In which I also designed a highly efficient trading engine using REDIS and achieved a TPS of 7000 Transactions per second. SERVICES: -Blockchain Development -Blockchain Forks -Smart Contracts Development -NFT Marketplace like OpenSea, Rarible. Mintable -NFT Collections and Minting website Development -Real Estate Tokenization -Token & ICO Development (Cryptocurrencies) -DeFi development, Dapps -Decentralized Exchange like Uniswap (DEXes) -Cryptocurrency Exchange (like Binance) -Crypto and Fiat Banking systems, payment gateways
Smart Contracts
Vue.jsSmart ContractReactBinance CoinBlockchain DevelopmentMongoDBEtherEthereum ClassicJavaScriptPython - $20 hourly
- 0.0/5
- (0 jobs)
I'm a 5-year experienced full-stack web developer with React.js Node.jsand blockchain . I can cover almost aspect of a web app including: frontend clients, backend servers, database, hosting, CI/CD, etc. I am skillful to work in REDUX workflow through MERN stack developing for several years, and my all react projects are always quality product, as I have been focusing on constructing my project to well-structed & smart component whenever every developments. I can recommend solutions and design architecture that will fulfill all the requirements and expectations. My expertise include Ethereum, Bitcoin, Smart contract, DAPPS, TRON, DEFI, SOLIDITY, Smart contracts, Solana, NFT , TOKENS, and many more. I have successfully completed many projects for my clients all over the world. I've been providing them with full cycle web solutions, cryptocurrency exchange systems, cryptocurrency trading bots and many other custom Blockchain solutions. MAJOR POINT:
Smart Contracts
AngularFront-End DevelopmentTypeScriptSmart ContractBlockchainSolidityReactLaravelPHPNode.jsJavaScript - $30 hourly
- 0.0/5
- (0 jobs)
QUALIFICATIONS SUMMARY - Over 7 years' Web Development experience, with a proven background, successfully managing all facets of site development, from initial design and architecture to site deployment and client management - Specialized in Blockchain, Smart contract development and NFT field - Demonstrated ability to complete high-end projects in deadline-oriented environments - Adept at successfully revamping Web sites to enhance user satisfaction and retention time, streamline navigation, and increase ad revenue and sales - Excellent problem-solving skills - Able to effectively communicate with a wide range of clients and coworkers - Good Practitioner of Best Practices, DevOps, SCRUM, Agile & Continuous Delivery
Smart Contracts
Smart ContractPHPPythonDjangoCodeIgniterJavaScriptWordPressNode.jsMongoDBCSS 3HTML5ReactVue.jsExpressJS - $30 hourly
- 0.0/5
- (0 jobs)
I am a senior full-stack developer with more than 6 years of experience in web and dApp development. My full-stack experience in JavaScript/TypeScript, React/Vue/Angular, Node/Express, Python/Django, Ruby on Rails, Web3.js/Ether.js and AWS would be an additional plus to your team who is working for a decentralized solution.
Smart Contracts
EthereumBlockchainMaterial DesignFront-End DevelopmentSmart Contractweb3.jsTailwind CSSGitHubVue.jsAngularMySQLMongoDBReact Want to browse more freelancers?
Sign up
How hiring on Upwork works
1. Post a job
Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.
2. Talent comes to you
Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.
3. Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
4. Payment simplified
Receive invoices and make payments through Upwork. Only pay for work you authorize.