Hire the best Solidity Freelancers in England

Check out Solidity Freelancers in England with the skills you need for your next job.
  • $40 hourly
    This is Rohan, Business Manager of TAFSOL TECHNOLOGIES Group!! 🎯 Aiming to deliver $10M+ Projects in 2023-2024 28th profound member of the OpenJS Foundation among other tech giants including Google, Microsoft, IBM, Uber and Coinbase, etc. TAFSOL Technologies is an Award-Winning Digital Agency Recognized by Clutch. co and Manifest as: 1. TOP B2B (Business-to-Business) SERVICES by Clutch. co in the Mobile App Development category. 2. MOST REVIEWED COMPANIES by The Manifest in the Software Development category. Our team of skilled professionals has extensive experience in providing a wide range of digital services such as: ✅ Logo Designing to give your business a Brand Identity ✅ Graphics Designing to make your customers fall in love with ✅ Website Design and Development that tells your business story and sells your products/services globally ✅ Mobile App Design and Development to make your business available at your customers' fingertips ✅ CRM Design and Development to effectively manage your customers ✅ SAAS-based platform Design and Development to streamline your business processes and increase efficiency ✅ ERP solutions Design and Development to integrate all business operations and provide real-time insights ✅ Blockchain Development to create decentralized platforms, decentralized applications (dApps), and smart contracts based on Blockchain networks, Ethereum, BSCSCAN, Solana, Polygon, etc. At TAFSOL, we understand that having a strong online presence is crucial to the success of any business. That's why we take a comprehensive approach to our services, ensuring that every aspect of your digital presence is optimized for maximum impact. From creating eye-catching logos to developing fully-functional and user-friendly websites, web apps, and mobile applications. What we Offer: ✅ 100% Client Satisfaction Rate ✅ 200+ Years of Accumulated Team Experience in IT Services ✅ 1000+ List of Satisfied Clients ✅ 100+ In-house Resources ✅ 42+ Countries in Which Our Clients are Based ✅ Quick Response Time of less than 2-3 Hours ✅ 5 Star Rated Profile Across All Platforms ✅ Dedicated Project Managers with Fluent English ✅ Support Services are available 5 days a week in EST, PST, MST, and GMT time zones. ✅ Physical Presence in the UK, USA, and PK Let's start chat here on Upwork.com so we can discuss your requirements in detail and share our ideas with you. You can also google us “Tafsol Technologies” and enjoy exploring more about our amazing services and reviews. Thanks for Visiting our Profile!!
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    NestJS Development
    NFT
    Material Design
    Blockchain Development
    ERC-20
    NFT Design Customization
    Storybook
    ERC-721
    MERN Stack
    Smart Contract
    Next.js
    JavaScript
    TypeScript
  • $50 hourly
    Hamza is a passionate software engineer with a track record of taking large-scale web applications from the drawing board to production. He developed the world's first web-based multi-threaded setup ceremony that leverages Rust and WASM to run cryptographic functions. He has extensive front-end knowledge using JavaScript, browser APIs, React, WASM, TypeScript, and Rust. In the back end, he excels with Node.js, Solidity (Ethereum), and web3 development. He is also an avid blockchain developer and has worked on multiple leading edge web3/Ethereum projects such as Aleo, radixdlt and NFT projects (kgpnft, skulz). Ethereum tools that he is familiar with are: Solidity, Hardhat, chainlink, polygon and aave He quickly realised after a few years that the companies he worked with were looking for much more than just an engineer. He figured out that most of his client's wanted someone who they could trust as a technical partner for their products. Someone, who can give suggestions right from what tech should be picked up, how to get the roadmap right, how should we plan the product launch, and a lot more. He loves to speak with people, help them find the perfect solutions for their problems, and help bring their ideas to life. As of today, He always strives to keep the quality high and every request is considered with extraordinary care.
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    Smart Contract
    web3.js
    Webflow
    Ethereum
    NFT
    AWS Lambda
    Node.js
    React
    GraphQL
    Web Development
    TypeScript
    Rust
    JavaScript
    Responsive Design
  • $40 hourly
    React, React Native, Vue, Angular, Node and Express. Excellent Result After Best Service! One home run is much better than two doubles. I am a competitive, passionate, ambitious Frontend React developer, who is always eager to improve and learn new technologies, and welcome challenges. I am working as an individual full-time developer now and seeking my career as a freelancer. I enjoy working with passionate people on exciting react projects. I always respect my clients, always take full responsibility for my work, and am never afraid of criticism. Looking forward to building a long term relationship with ambitious clients. And I am usually around during US business hours.
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    Blockchain
    React Native
    Firebase
    Apollo.io
    AWS Lambda
    Vue.js
    ASP.NET
    Node.js
    Azure DevOps
    Angular
    AWS Amplify
    Gatsby.js
    ExpressJS
    React
  • $90 hourly
    Hey! I'm Vlad, a technologist, tech architect and founder of the London-based TGR tech Agency. What started as an enthusiasm for Web3, quickly expanded into an all-encompassing emerging tech agency. Now, TGR touches every corner of emerging tech, from AI and Web3 to AR and biometrics. With 60+ projects under our belt across 15 countries, we're not just about numbers; we're genuinely passionate about assisting businesses to understand, build, and integrate these groundbreaking technologies. Our tech stack includes industry-leading tools like OpenAI, GPT-3, ChatGPT, TensorFlow, Dialogflow, Pinecone, Vector, Python, React, Vercel, Javascript, MySQL, RASA, Restful API, MongoDB, Solidity, Rust and so much more. Avatar/3D/AR design/tech stack is mainly: Blender, Maya, Babylon JS, Three JS, Unity, Unreal, and Elevenlabs. Got tons of experience building complex tech products: ― Slam Girl AI chatbot, a superhero character created by Stan Lee. She was fine-tuned on a version of ChatGPT and is capable of answering a vast array of questions about superheroes. ― Built MassageBook AI Bot, which is connected to 40K+ vendors in the US. Helped the business reduce customer support costs by 30%. Helps users choose the service they need in under 1 minute. ― One of our recent successes was launching Pangeapass, a smart identity verification app that uses AI to scan e-documents through NFC technology and identify e-chip locations. ― Developed a Web3 marketplace (Stadio Labs) with $1m VC-backed funding and integrated physical utility features for the NFTs Would love to help you with your next project! If there is anything you would like to discuss, feel free to DM me here to get started. Happy to meet for coffee in London, in case you are based somewhere close by! 🙌
    vsuc_fltilesrefresh_TrophyIcon Solidity
    Smart Contract
    Blockchain Architecture
    Ethereum
    Blockchain Development
    NFT
    Marketing Analytics
    Music NFT
    NFT Marketplace
    Ecommerce Website
    Blockchain, NFT & Cryptocurrency
    Conversion Rate Optimization
  • $80 hourly
    I offer high-quality, affordable development, providing customized solutions that fit your business's unique needs. With over 8 years of experience in the software industry, I have helped many businesses across different sectors succeed by delivering exceptional custom web/blockchain/AI development services. I guarantee visually engaging, highly interactive, and responsive development work to win the hearts of your ever-demanding customers. I have experience in • Mobile App: Flutter, React Native, Java, Kotlin, Objective-C, Swift, etc. • Frontend: Vue.js, React.JS, Quasar framework, Javascript, • Blockchain: Solidity/Web3 for ERC20/NFT/Tokenomics, Smart Contract/dApp • AI: Python, Django, AI/ML, CNN, NLP • AR/VR: ARFoundation, ARKit, ARCore, Vuforia, Visionlib, and AR dev, also familiar with Oculus, HTC Vive, and VR development. • Game: Mobile and PC, web game with Unity. • Backend: Laravel, Node.js, • Database: MySQL, MongoDB, PostgreSQL • Payment Gateways: Stripe, Braintree, Paypal • 3rd party services: Firebase, ChatGPT, Twilio, Branch.io, Mixpanel, AWS, GCP, Agora.io, OneSignal, Sendgrid, Img.ly If you have any work, I'd be happy to help! Feel free to reach out to me at any time. Thank you!
    vsuc_fltilesrefresh_TrophyIcon Solidity
    Web3
    Python
    AI Development
    Blockchain
    JavaScript
    Kotlin
    Swift
    iOS
    React Native
    Augmented Reality
    Virtual Reality
    Unity
    Android
    C#
  • $45 hourly
    Develop trading strategies using quantitative or machine learning. Data visualization to complement trading algorithms (Matplotlib, Bokeh) Data mining, cleaning, resampling/grouping is a weekly activity. IG market API Interactive Brokers API Binance API (Python, Solidity) ProRealtime code (ProScreener, ProBuilder)... I use them for my strategies. Python Libraries: Pandas, Numpy, Sci-py, Requests, Sklearn, Threading, Teras...
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    Cryptocurrency
    API
    Statistics
    Data Analysis
    Data Visualization
    Machine Learning
    Linear Regression
    Microsoft Power BI
    Python
    Microsoft Excel
    pandas
    NumPy
  • $40 hourly
    I am a certified professional Blockchain Developer with vast years of experience in Blockchain development with expertise in integrating third-party APIs in web3 and Blockchain Dapps. Frontend Development(HTML, JavaScript, CSS, Bootstrap, jQuery) JavaScript libraries (React.js, Vue.js, Angular.js) JavaScript Backend Framework(Node.js, [login to view URL]) PHP Framework(Laravel, CodeIgniter, WordPress) Database(MySQL, MongoDB, Firebase, PostgreSQL) Web Design My Blockchain Specialisation Areas: ✅Smart Contracts development using Solidity ✅Web3 integration ✅Unit testing and testing using test nets such as Ropsten and Goerli networks. ✅Metamask wallet integration ✅NFT Minting DApps and marketplaces (Polygon, Avalanch, Ethereum, Solana, Binance, )In-depth knowledge of ERC20 & ERC721 Smart Contracts ✅Deployment to the main net using Infura. ✅NFT contract ✅Token/ coin Contract ✅DeFi platforms (any dApp, Binance Smart Chain, Ethereum, EOS, Tron) ✅ICO Applications ✅Token on standards- ERC 20, ERC 721, ERC 721A, ERC1155, BEP20. Token on standards- Spl tokens ✅Web Development for Custom Business Web Applications ✅Front-end and Back-end Development ✅Content Management Development ✅Stock exchanges (like Binance, Coinbase, etc) ✅Wallets (crypto/fiat) ✅Blockchain block explorers ✅High-End Enterprise Web Applications ✅Develop Custom RESTFUL APIs For Mobile Applications ✅Blockchain Development ✅Defi EXchange ✅BEP1155 ✅Truffle ✅NFT minit ✅Open sea minting Frameworks & Tools we can use : ✅React for UI ✅Ether JS ✅Hardhat ✅MetaMask Wallet Integration ✅Mocha and Chai tests. ✅Moralis ✅Dapp ✅Defi ✅BSC I have a high standard of creativity in Art creation and NFT collections. ✅NFT Concept and Art ✅NFT 2D Artwork ✅ NFT Art Creation | 2D, 3D, Anime, Pixel Art. ✅ Generative art and collections (10,000 NFTs) ✅NFT 3D Artwork ✅NFT Animations ✅NFT 3D Animations ✅NFT Design from scratch ✅Motion NFT Kindly connect with me if you are looking for these services or let me know if you have any questions, or would like to get into consultation with me. Thanks for reading Best Regards
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    Website Redesign
    WordPress
    JavaScript
    Web Application
    API Integration
    Blockchain, NFT & Cryptocurrency
    React
    Smart Contract
    NFT Marketplace
    DApp Development
    Cryptocurrency
    NFT Minting
    NFT Collection Generation
  • $60 hourly
    My name is Mayur Kale, and I am a Senior Full-Stack Engineer in London, UK. I've successfully delivered software systems for various organisations for over ten years. I am now a hands-on developer CTO for building for clients based UK/US & UAE. I'm a highly skilled and experienced Full Stack Developer specializing in a wide range of technologies including Typescript, Java, React, Node.js, MongoDB, NoSQL, NestJS, Solidity, Smart Contracts, and Blockchain. With a strong foundation in both front-end and back-end development, I offer comprehensive solutions that drive efficiency, performance, and innovation. In addition, my website design and development skills are solid with expertise in React native, CSS, Webflow and Figma. Here's what I bring to the table: ✅ Full Stack Proficiency: I excel in both front-end and back-end development, allowing me to seamlessly integrate and deliver end-to-end solutions. I'm adept at developing responsive and intuitive user interfaces using React and leveraging the power of Node.js to build robust server-side applications. ✅ Typescript and Java Expertise: I have extensive experience in Typescript and Java, enabling me to develop scalable and maintainable applications. I leverage the latest frameworks and libraries to ensure clean code architecture and optimal performance. ✅ React Mastery: With my deep understanding of React and its ecosystem, I create dynamic and interactive user interfaces that provide an exceptional user experience. I'm well-versed in modern front-end practices such as state management, component-based architecture, and UI testing. ✅ Database Proficiency: I have hands-on experience working with MongoDB and NoSQL databases, ensuring efficient data storage and retrieval. I understand the importance of data integrity, performance optimization, and database design principles. ✅ NestJS and Solidity: I'm skilled in using NestJS, a powerful framework for building scalable and modular server-side applications in Node.js. Additionally, my expertise in Solidity allows me to develop smart contracts for decentralized applications, ensuring security and transparency on the blockchain. ✅ Blockchain Integration: I have a strong understanding of blockchain technology and its potential for revolutionizing industries. I can assist in integrating blockchain solutions into existing systems or building decentralized applications from scratch. If you're seeking a dedicated and talented Full Stack Developer with expertise in Typescript, Java, React, Node.js, MongoDB, NoSQL, NestJS, Solidity, Smart Contracts, and Blockchain, I'm here to bring your vision to life. Let's discuss your project requirements and create innovative solutions together. Let's get to work. Mayur Kale
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    Blockchain
    API
    Microservice
    DevOps
    Spring Framework
    React
    NoSQL Database
    Initial Coin Offering
    React Native
    Web Development
    Database
    Node.js
    JavaScript
    Java
  • $45 hourly
    Hello, I am a blockchain and metaverse developer with years of rich experience. Well-versed in smart contract dev and web3 technology on EVM and Solana. These are my services: 1. NFT crypto website, NFT mint, staking, reward, NFT game, NFT marketplace, etc 2. ERC20/Bep20/TRC20 token, web3 & smart contract 3. ICO, IDO, IFO 4. Cryptocurrency trading and arbitrage bot 5. Customized DEX and Defi 6. DApps and smart contract on Ethereum, Solana, Cardano, Near, Algorand, etc 7. Betting, Play to Earn 2D/3D Game 8. Web and mobile app development(Frontend and backend) I am ready to go and will start working right away for your business success. Please feel free to reach out to me if you have any projects or new job opportunities. Best Regards
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    Crypto Exchange Platform
    Cryptocurrency
    DApp Development
    Blockchain
    Game
    Rust
    Ethereum
    Smart Contract
    Web3
    Metaverse
    NFT
    Solana
    DeFi
    JavaScript
  • $65 hourly
    I am a developer with a wide skill set. I completed covered a huge range of projects from web applications to mobile apps to smart contracts to Desktop applications and more. I now have over 5 years experiene of programming. My skills include but are not limited to: ⭐️Javascript/TypeScript/Solidity/Python/Go ⭐️React/React Native ⭐️SQL/MongoDB ⭐️HTML/CSS/TailWindCSS ⭐️AWS What can I help you with ? ⚡️General scripts ⚡️Automation scripts. ⚡️Web scraping scripts ⚡️Web apps ⚡️Mobile apps ⚡️Database work ⚡️Dekstop applications ⚡️Chrome Extensions ⚡️Smart Contracts ⚡️Integrating web3 into websites
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    Automation
    Google Chrome Extension
    Discord
    HTML
    ExpressJS
    Front-End Development
    Database
    API
    React
    TypeScript
    Python
    React Native
    Amazon Web Services
    JavaScript
  • $50 hourly
    Senior Blockchain/Trading developer Blockchain development 1. Developing smart contracts using a Solidity programming language. 2. Developing RPC using client libraries such as Web3. 3. Static analysis of smart contracts for gas consumption and optimization using Remix IDE. 4. Securing smart contracts using libraries like OpenZeppelin. 5. Developing Ethereum dApps using the Truffle, Hardhat framework. 6. Integration with crypto wallets such as Metamask. 7. EVM compatible networks and Solana, Aptos network. Trading bot development 1. Implement custom indicator and strategy using python, node.js, pinescript or MQL4, MQL5. 2. Build telegram or discord bot for trading signals. 3. Build trading bot tool that submits trading to exchanges. 4. FT, NFT sniper/bidding bot, MEV bot development 5. MEV sandwich, arbitrage bot development and product service.
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    Ethereum
    NodeJS Framework
    JavaScript
    React
  • $50 hourly
    With a robust seven-year tenure in web development, I am a Senior Software Engineer specializing in building and enhancing web applications. My career has been enriched by collaborations with innovative startups and medium-sized companies, allowing me to develop a deep understanding of product development and business growth strategies. ❇️ Expertise in Web Application Development: ❇️ ✅ Minimum Viable Product (MVP) Development: Skilled in conceptualizing and building MVPs from the ground up, ensuring rapid deployment and market feedback. ✅ Front-end Technologies: Proficient in creating responsive and dynamic user interfaces using React and Next.js, coupled with extensive experience in state management using Redux. ✅ Back-end Development: Adept in developing robust server-side applications with Node.js and Express, along with Python and Django for high-performing, scalable solutions. Experienced in PHP for diverse project requirements. ✅ Cloud Services and Database Management: Skilled in deploying and managing applications on AWS, with a strong understanding of GraphQL. Expertise in database technologies including MySQL, MongoDB, and PostgreSQL. ❇️ Design and User Experience: ❇️ ✅ UI Frameworks: Proficient in Material-UI, Tailwind CSS, and Bootstrap for crafting aesthetically appealing and functional user interfaces. Quality Assurance: Committed to delivering high-quality products through rigorous testing using Jest, Enzyme, React Testing Library, and Cypress. ❇️ Career Objective: ❇️ As I venture into new industries, my objective is to leverage my comprehensive skill set and rich professional experience to significantly contribute to your product development. I am dedicated to creating solutions that align with technical requirements while driving business success and enhancing user satisfaction.
    vsuc_fltilesrefresh_TrophyIcon Solidity
    Web3
    Redux
    Django
    Python
    Nuxt.js
    TypeScript
    Next.js
    Gatsby.js
    Vue.js
    PHP
    GraphQL
    JavaScript
    React
  • $50 hourly
    DEFI | Cryptography | zkEVM | Cosmos SDK | Metaverse | P2E game | Gambling | NFT | | DEX | Solidity | Rust | Hardhat | Truffle | Web3.js | Ether.js | React | Next.js | Node.js | Typescript | PHP | AWS | eCommerce | Frontend | Backend | Python | AI-ML Senior Software Engineer with a high-level educational background in computer science, and professional work experience in design and development from scratch, maintenance, pro-coding style, code review, and testing. I love coding and challenging new technologies, and as a problem solver, I come up with creative and effective ideas to meet deadlines. My services: ✅Full Stack Web Development ✅Blockchain Development: New Blockchain, DEFI, NFT mint, staking, marketplace, DEX, Crypto Wallet, Play to Earn game, Lending, and Borrowing, etc. ✅Customized CRM / ERP ✅Database Management & Development ✅Hosting and Cloud management ✅Development of various bots ✅Integrations of Softwares & IT Security Implementations ✅OpenAI and ChatGPT integration, AI model implementation. My Skills: ✅Blockchain: Solidity, Rust, Move, Web3.js, Ether.js, Wagmi, AlchemyAPI, Infura, Chainlink, Proxy(Transparent/UUPS) ✅Frontend: React, Angular, Vue.js, Next.js, Nuxt.js, Redux, Sass, TailwindCSS, MaterialUI, ChakraUI, Antd, Vuetify, Typescript, ES6/ES7. ✅Backend: Node.js(Express.js, Nest.js), Python(Django), PHP(Laravel, Symfony, CakePHP, Yii) ✅Database: MongoDB, MySQL, PostgreSQL ✅CI/CD: Git, Docker, Azure Devops, Trello, Slack, Jira, AWS, Heroku, Netlify, Firebase ✅Other: Rust, Go, C#, C/C++, Java Thank you for taking the time to review my profile. I look forward to creating good things together. Sincerely, Javan
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    Angular
    Web Development
    Tailwind CSS
    Web3
    React
    Cryptocurrency
    Blockchain
    Golang
    Python
    TypeScript
    PHP
    Node.js
    Rust
    Smart Contract
  • $80 hourly
    Dynamic Software Engineer with over 20 years of experience: - Solidity, Smart contract Audit, Web3, Foundry, Hardhat - Solana, Rust, Anchor, Token 2022 - HFT, Trading, Forex, MT4, C#, C++, Python - Rust, Go, Cosmos, Blockchain architecture - React, Express, MongoDB, Node.js - AI, Tensorflow, ChatGPT, Python Dynamic Software Engineer with over 20 years of experience, specializing in smart contract development, trading strategies, and AI technologies. Skilled in Solidity for blockchain applications, Python, C++, and JavaScript for trading algorithms, and Rust for blockchain development. Proficient in high-frequency trading (HFT) strategies and AI models for sophisticated solutions. Experienced in designing and implementing secure and efficient software solutions across diverse industries. Motivated by new challenges and dedicated to driving innovation through problem-solving and continuous learning.
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    AI Development
    Trading Strategy
    ChatGPT
    web3.js
    Derivatives Trading
    Ethereum
    Solana
    JavaScript
    Python
    C#
    C++
    TensorFlow
    Golang
    Rust
  • $70 hourly
    Experienced Senior Blockchain Developer with a track record of 5 years in leadership roles, adept at guiding teams across diverse scales and complexities. Proficient systems programmer well-versed in Layer 1 and Layer 2 protocols, with a fervent dedication to blockchain technology and decentralization. Demonstrated expertise in Bitcoin development, possessing a deep understanding of its ecosystem and contributing meaningfully to its advancement.
    vsuc_fltilesrefresh_TrophyIcon Solidity
    Tailwind CSS
    Next.js
    NestJS
    React
    DeFi
    Blockchain
    Bitcoin
    TypeScript
    Rust
    Golang
    Solana
    Ethereum
    Smart Contract
    NFT
  • $50 hourly
    Hello! I'm Asif, a highly skilled Full Stack Blockchain Developer with over 10 years of experience in the technology industry, including a decade specializing in blockchain development. My career is marked by a proven track record of delivering over 100 successful blockchain projects for both startups and Fortune 500 companies, driving innovation and efficiency across various sectors. I have a comprehensive understanding of the blockchain ecosystem, with expertise spanning smart contract development, decentralized application (DApp) creation, and full-stack blockchain architecture. I excel in using platforms such as Ethereum, Hyperledger, and Binance Smart Chain, ensuring that your projects leverage the best available technology. Why Hire Me: 1. Over 10 years in technology and 10 years in blockchain development. 2. Delivered 85+ blockchain projects, including solutions for Fortune 500 companies. 3. Proficient in Ethereum, Hyperledger, Binance Smart Chain. 4. Implementing best practices for secure and compliant blockchain development. 5. Committed to staying at the forefront of blockchain advancements to deliver state-of-the-art solutions. Skills and Services: 1. Crafting secure and efficient smart contracts using Solidity, 2. Building user-friendly and scalable decentralized applications. 3.:Designing robust blockchain solutions tailored to your business needs. 4. Creating engaging and intuitive user interfaces with React.js 5. Developing powerful back-end systems using Node.js. 6. Tokenization and NFTs: 7. Seamlessly integrating blockchain technology into existing systems. Let's connect and discuss how I can help turn your blockchain vision into reality, providing you with a competitive edge in today's rapidly evolving digital landscape. Keywords: Solidity, Etherium, Dapp, Defi, Decentralized, Crypto wallet, smart contract, blockchain dev, Web3
    vsuc_fltilesrefresh_TrophyIcon Solidity
    Ethereum
    Decentralized Exchange
    DeFi
    Web3
    Blockchain Architecture
    Blockchain Development Framework
    Layer 2 Blockchain
    Blockchain, NFT & Cryptocurrency
    Blockchain Tokenization
    Blockchain Security
    Blockchain
    Crypto Wallet Development
    Smart Contract
    Blockchain Development
  • $45 hourly
    I am a highly skilled full stack and blockchain developer with a strong problem solving skills and knowledge about the blockchain and web application development. In more than 10 years of experience, I have developed several projects including POS, ERM, LMS system and e-commerce websites. Also familiar with blockchain development, I have developed several blockchain projects such as DEX, CEX, Dao, Token Bridge and several smart contracts for different aims. As a developer who are always keen on the new technology, I mastered about the new technology - ordinal - which is based on UTXO blockchain. I prefer using modern web frameworks such as React.js, Next.js, Vue.js and also good at development of PHP frameworks such as Laravel, Yuii, Symfony etc. Here are my skills of development. Blockchain development • Bitcoin, Litecoin, Dogecoin, Ethereum, Solana, Polygon, Cosmos • Solidity, Rust, FunC, GoLang, Bitcoin Script, Web Development • React.js, Vue.js, Next.js, Laravel, Yuii, Symfony, Electron • Node.js, Nest.js, Express.js • Javascript, TypeScript, PHP, Jquery, AJAX, Axios • HTML 5, CSS 3, .LESS, History API • MongoDB, MySQL, postgreSQL, SQLite • AWS, Serverless AWS, lambda, CI/CD pipeline • Firebase, Cloud functions Mobile development • React-native, Flutter, Kotlin
    vsuc_fltilesrefresh_TrophyIcon Solidity
    React Native
    NestJS Development
    Mobile App Development
    NFT
    Bitcoin
    Smart Contract
    Solana
    Rust
    Blockchain Development
    Web Development
    Node.js
    TypeScript
    Next.js
    React
  • $75 hourly
    I am a highly skilled IT consultant and developer with over 20 years of experience supporting corporations and educational institutions. Throughout my career, I have excelled in managing both in-house and cloud-based systems, specialising in technical support and cloud administration. My expertise spans system creation, development, deployment, and support across various industries, with a strong focus on organising complex systems for optimal success. Having worked in fast-paced environments, I have honed my ability to handle intricate IT infrastructures, whether in local setups or cloud environments like Azure, GCP, and AWS. Additionally, I bring extensive experience in both software and hardware support. I am continually expanding my knowledge in emerging technologies, including blockchain, cryptocurrency, and web3, to stay ahead in the ever-evolving tech landscape.
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    Python
    FlutterFlow
    IT Management
    IT Infrastructure
    Blockchain, NFT & Cryptocurrency
    Blockchain Tokenization
    Layer 2 Blockchain
    Cloud Management
    IT Consultation
    Swift
    Web Application
    Blockchain Architecture
    PHP
    JavaScript
  • $35 hourly
    ⭐⭐⭐⭐⭐ "Jawed exceeded expectations by delivering scalable Web3 solutions that revolutionized our business. A truly exceptional developer." – Alex T., SaaS Founder With over 12+ years of experience, I am a versatile developer specializing in Blockchain, Cryptocurrency, & Full-Stack Development. From crafting smart contracts and DeFi platforms to developing user-friendly web & mobile applications, I empower businesses to thrive in the Web3 era. I deliver cutting-edge blockchain solutions & scalable full-stack systems tailored to meet your unique business needs. Whether you need a custom dApp, secure tokenomics, or a high-performance MERN stack platform, I bring expertise and innovation to every project. 🌟 Core Expertise: ✅ Blockchain Development - Smart Contracts: Expertise in Solidity and Rust for Ethereum, Solana, and Polygon. - DeFi Protocols: Liquidity pools, staking systems, and yield farming. - Web3 Integrations: Wallets (MetaMask, Phantom) and blockchain APIs. - NFT Marketplaces: Custom platforms for minting, trading, and showcasing NFTs. - Decentralized Applications (dApps): Secure and scalable dApps for industries like gaming, e-commerce, and finance. ✅ Full-Stack Development - Frontend: React.js, Next.js, and TailwindCSS for sleek, responsive user interfaces. - Backend: Node.js, Express.js, GraphQL, & FastAPI for scalable APIs. - Database Management: MongoDB, PostgreSQL, and Firebase for optimized data handling. ✅ Crypto-Specific Solutions - Token Development: ERC20, ERC721, ERC1155, and SPL tokens. - Blockchain Analytics: On-chain data processing and visualization. - Multi-Chain Integration: Ethereum, Solana, Binance Smart Chain, and Polygon. - Crypto Wallet Integration: Seamless connections for MetaMask, Phantom, and other wallets. ✅ DevOps & Cloud Solutions - CI/CD Pipelines: Expertise in Jenkins, GitHub Actions, and AWS CodePipeline. - Docker & Kubernetes for scalable, containerized deployments. - Cloud Platforms: AWS, GCP, and Azure for hosting and scaling blockchain systems. 🌟 Recent High-Impact Projects: 1️⃣ DeFi Yield Farming Platform ✅ Challenge: Develop a secure platform for staking and liquidity farming with dynamic rewards. ✅ Solution: Designed custom Solidity smart contracts and integrated Web3.js for real-time staking management. ✅ Result: Achieved $20M+ in Total Value Locked (TVL) and a 30% increase in user retention. 2️⃣ NFT Marketplace ✅ Challenge: Launch a multi-chain NFT marketplace with minting & auction capabilities. ✅ Solution: Built an intuitive React.js frontend, integrated with Ethereum and Solana smart contracts. ✅ Result: Enabled 100k+ NFTs minted and traded within the first 6 months. 3️⃣ Cross-Chain Payment Gateway ✅ Challenge: Create a seamless crypto payment gateway for e-commerce platforms. ✅ Solution: Developed a multi-chain solution with wallet integration (MetaMask, Phantom) and real-time transaction monitoring. ✅ Result: Processed over $5M in transactions within the first quarter. 4️⃣ E-Commerce Blockchain Loyalty Program ✅ Challenge: Develop a blockchain-based loyalty rewards system for an e-commerce platform. ✅ Solution: Designed a decentralized loyalty program using smart contracts and integrated with Web3 for real-time tracking. ✅ Result: Boosted customer retention by 40%. 🌟 Technical Skills: ✅ Blockchain Development - Languages: Solidity, Rust, TypeScript - Tools: Hardhat, Truffle, Remix - Platforms: Ethereum, Solana, Polygon, Binance Smart Chain - Standards: ERC20, ERC721, ERC1155, SPL Tokens ✅ Frontend Development - React.js, Redux, Next.js - TailwindCSS, Material-UI for modern, responsive designs ✅ Backend Development - Node.js, Express.js, FastAPI - RESTful APIs, GraphQL - Real-time APIs: WebSockets, Pub/Sub patterns ✅ DevOps & Cloud - Docker, Kubernetes, Terraform - CI/CD Pipelines: GitHub Actions, Jenkins, CircleCI - Cloud Platforms: AWS (EC2, Lambda, S3), GCP, Azure ✅ Database Management - MongoDB, PostgreSQL, Firebase - Real-time synchronization and optimization 🌟 Industries Served: - DeFi & Blockchain Startups: Tokenomics, smart contracts, and decentralized platforms. - Gaming: Play-to-Earn systems and NFT game development. - FinTech: Blockchain-based payment gateways and analytics tools. - E-Commerce: Crypto payment solutions and blockchain loyalty programs. - Healthcare: HIPAA-compliant blockchain solutions for secure patient data. 🌟 Why Choose Me? ✅ Blockchain-Only Focus: Deep specialization in blockchain development ensures cutting-edge solutions. ✅ Proven Results: $15M+ in DeFi TVL, $7M in crypto payments processed, 75k NFTs minted. ✅ End-to-End Expertise: From smart contract audits to multi-chain integrations, I cover the entire blockchain stack. ✅ Client-Centric Approach: I collaborate closely to align solutions with your business goals. ✅ Future-Proof Solutions: My systems are scalable, secure, and ready for Web3 growth. 🚀 Let’s Build the Future of Web3 Together! Click “Invite to Job” and let’s get started! 🚀
    vsuc_fltilesrefresh_TrophyIcon Solidity
    Amazon Web Services
    Docker
    CI/CD
    MERN Stack
    React
    Node.js
    Solana
    Ethereum
    Crypto Wallet Development
    Web3
    NFT Marketplace
    DeFi
    Smart Contract
    Blockchain Development
  • $80 hourly
    I have been working as a technology architect and lead engineer for more than 10 years. I have developed highly complex engineering apps architecture on different blockchains. I am an expert in Finance/Banking platforms, Defi, Smart contracts, Cross-blockchain protocols, Yielding/Farming, Staking protocols, and end-to-end frontend/backend integration. Why Me? ● Passionate meeting aggressive deadline with highest code quality ● Expert in end-to-end Software Development Life Cycle using Agile Development Methodologies ● Free Technical support of 4-6 weeks after releasing the product to the Production ● Available 40+ hrs/week ● Full satisfaction guaranteed I can demo some of the projects I developed from requirements specification to deploying in production including setting up AWS/GCP infrastructure. Expertise: ● Ethereum & Bitcoin blockchains expert ● Cross-blockchains like Polkadot ● Multi-layer blockchains like Matic ● End-to-end Defi protocol development experts including yielding/farming, staking, AMM, liquidity mining ● Experts working with Uniswap, 1inch, and other DEX aggregator protocols ● Cryptocurrency API Integration handling millions of data points from data providers like CoinMarketCap, CoinGeko, and On-chain data ● Decentralised Applications (DAPPs) ● JavaScript/ Typescript Experts - Vue.js, React.js, Node.js, Eather.js, Web3.js
    vsuc_fltilesrefresh_TrophyIcon Solidity
    Ethereum
    API
    Cryptocurrency
    Research & Development
    Blockchain
    Smart Contract
    React
    Angular
    MongoDB
    Rust
    Node.js
    Python
  • $50 hourly
    I am a full-stack developer with experience in Edtech, FinTech, and HealthTech. I have worked as an individual developer and with scrum teams at startups and enterprises. I have a strong understanding of the JavaScript, Typescript, and React ecosystems, and I am proficient in using libraries and tools like Node.Js, React.Js, Next.js, Express.js, Nest.js, GraphQl, Docker, SQL and NoSQL databases, React Native, CI/CD, and DSA. I am also passionate about the client experience and work to empower my clients so they can achieve their goals with ease. In addition, I have extensive experience in backend development and frontend development, which makes me the perfect candidate as a freelancer full stack developer for your team. In choosing me to be your developer, you can be sure that you are getting someone with the skills, experience, and work ethic needed to get the job done well. ★ FAST, EFFICIENT REACT DEVELOPMENT - React and React Native are my fortes – I can build high-quality React and React Native apps quickly and efficiently. ★ NODE.JS AND GRAPHQL WIZARD - I have a deep understanding of different libraries and tools, such as Node.js and GraphQL, which gives me an edge over other developers. ★ ROBUST API DEVELOPMENT - I have experience with backend development, which allows me to create robust and powerful APIs. ★ 100% CLIENT SATISFACTION - My client engagement skills ensure clients are happy and empowered throughout the development process. ★ PASSION FOR CYBERSECURITY - Finally, my passion for cybersecurity means that clients can trust me to keep their data safe and secure. Backend Development My experience in backend development has given me a deep understanding of problems such as scalability and performance. I've worked with different tools like Express, Nest, SQL databases among others to build monolithic apps that can also take advantage when necessary on Microservices architecture for maximum efficiency by shipping them out into various Cloud hosting solutions including Amazon’s AWS, Google cloud platform GCP or Microsoft's Azure. For a full list of the backend development libraries and methodologies I use, please see below: ⚒ Node.js ⚒ Express.js ⚒ Nest.js ⚒ GraphQl ⚒ TypeORM ⚒ Sequelize ⚒ MongoDB ⚒ PostgreSQL ⚒ MySQL ⚒ SQL ⚒ Jest ⚒ Cypress Frontend Development Frontend development is all about efficiency. When building traditional client apps with blazing fast Html, Css and Js/Ts and React in different flavours (Legacy Class Based, Functional + hooks + Redux, and Next.js), I'm an experienced engineer that can efficiently understand how to use SSR or Lazy loading for performance benefits while keeping up your app's user interface smoothness without any bugs! I've tested these techniques on React applications too where it’s crucial not only delivering high-quality code but also making sure you're using best practices like unit testing frameworks so no story gets overlooked during compilation time. For a full list of the Frontend development libraries and methodologies I use, please see below: ⚒ React ⚒ React Native ⚒ Next.js ⚒ Bootsrap ⚒ TailwindCss ⚒ Html5/Css3 ⚒ Chakra UI ⚒ D3.js ⚒ Snap.js ⚒ SCSS ⚒ Material UI ⚒ Mocha Chai ⚒ Redux ⚒ Redux Saga/Thunk ⚒ Context Api
    vsuc_fltilesrefresh_TrophyIcon Solidity
    React Native
    MySQL
    GraphQL
    HTML5
    CSS 3
    React
    ExpressJS
    DApps
    NoSQL Database
    Blockchain
    web3.js
    JavaScript
    Node.js
    TypeScript
  • $50 hourly
    Hello, welcome Starting from the middle of 2016 began proactively working on blockchain-related projects as a Blockchain software engineer. My experience range from creating both front-end blockchain applications to back-end architecture design and implementation, smart contract development, testing, auditing, and development for Fintech and other industries that need the power of decentralization, tokenization, and smart contracts. Expertise in Public Blockchain Platforms: Solana | Bot Engineer - Developing smart contracts by Rust Programming languages. - Developing RPC using client libraries such as Web3js. - Integration with crypto wallets such as Phantom. Deploying smart contracts on test networks as well as Solana mainnet. - Bot Development on various chain.(Trading bot, NFT bidding bot, betting bot and etc) Expertise in Private & Consortium Blockchain Platforms Hyperledger Fabric - Developing Chaincode using the Go/Rust Programming language - Developing proof of concepts using Hyperledger Composer. - Creating RESTful APIs for client applications to communicate with the blockchain network. ... I hold expertise with: -Solidity / Rust / Golang - JavaScript / React.js - MySQL / MongoDB / PostgreSQL / MSSQL - AWS / DO/ Heroku - GIthub / Gitlab / Bitbucket / Trello / Asana, etc. Here are the applications that I've built so far - Dapp, DeFi development - NFT game/marketplace development on Ethereum & Solana blockchains in Solidity & Rust & Golang - Ethereum & Binance Smart Chain token development on ERC20, ERC721, ERC1155, BEP20, BEP721 & BEP1155 protocols - ICO / ITO / IDO / STO, Cryptocurrency exchange & Cryptocurrency Wallet Development
    vsuc_fltilesrefresh_TrophyIcon Solidity
    Blockchain
    DApps
    Bot Development
    Blockchain, NFT & Cryptocurrency
    Cryptocurrency
    Web3
    Solana
    NFT
    Blockchain Architecture
    Rust
    Ethereum
    NFT Minting
    DApp Development
    Smart Contract
  • $50 hourly
    Recruiter turned web3 developer. Specializing in smart contract development with Solidity. Well-versed in implementing ERC standards such as ERC20, ERC721 & ERC1155 and I like to keep up-to-date with the latest EIPs for best practices. I have built various NFT Marketplaces where bidders can to auction and create custom pricing for their NFTs, built DeFi protocols based on makerDAO, and worked on creating smart contract lotteries using ChainLink to create a random number using VRF. I am proficient with modern day frameworks including Foundry and Hardhat. Experienced in deploying smart contracts across multiple environments including local development nodes (Anvil), public testnets (Sepolia), and Layer 2 solutions (zkSync) Currently learning to develop dApps utilizing the scaffold-eth framework. I am passionate about contributing to the future of decentralized finance, and working on a trust-less and permissionless web! Tech Focus: Solidity | Smart Contracts | Foundry | Hardhat | TypeScript | DeFi | NFT | dApps | ERC Standards
    vsuc_fltilesrefresh_TrophyIcon Solidity
    HR & Recruiting Software
    Forex Trading
    Business
    Physical Fitness
    Health & Fitness
    Trading Lesson
    Trading Strategy
    Health
    Ethereum
    Blockchain Development
    Blockchain Security
    Blockchain
    Web3
  • $150 hourly
    Not Available for new projects till June 2024 Software engineer, hacker, AI breeder, data wrestler, blockchain mechanic, web app blacksmith - Expert Vetted Badge acquired. These days, my main focus is on applications that leverage LLMs and other AI technologies. I like to design and build stuff, but the thing I enjoy most is problem solving. I sometimes get bored easily and thrive on new challenges, be they algorithmic or even the occasional bug-hunting - I actually like debugging! With a solid background in full-stack engineering, machine learning, data engineering, and complex web scraping, and a recent interest in blockchain technologies, I am able to design and efficiently implement a wide range of solutions.
    vsuc_fltilesrefresh_TrophyIcon Solidity
    Amazon Web Services
    JavaScript
    React
    Web3
    Full-Stack Development
    NoSQL Database
    Data Visualization
    Ethereum
    Web Scraping
    Data Engineering
    Blockchain
    SQL
    Machine Learning
    Python
  • $40 hourly
    Hello! I am Edgaras, a developer with a passion for games, websites, blockchain technology. With a background in php, mysql, solidity, I am dedicated to delivering high-quality services to meet the unique needs of my clients. My expertise lies in game developing, testing, or just community support. Whether you need ideas in game developing, blockchain projects, I am committed to providing results that exceed expectations
    vsuc_fltilesrefresh_TrophyIcon Solidity
    Automation
    Blockchain
    Data Entry
    HTML
    SQL
    Game
    Python
    PHP
  • $30 hourly
    I am a professional full-stack and blockchain developer, with good experience building websites that make a difference in a business bottom line. George developed over 5+ seamless and scalable webstes from small to large as a Full Stack Developer. He also developed Ethereum blockchain contracts framework with Smart Contracts Framework dev and Solidity+Assemble in order to allow updates to smart contracts in existing cotracts. I have several years of professional experience, ranging from freelancer to small contract jobs. Especiallym, I am passionate about well-designed code and adheres to the practices of Agile development, Solid and modularization. JavaScript Framework technologies - React, React Native, Next, React-Redux and Redux-Saga - Vue, Vuex, Vuetify, Quasa - Angular, Flux - SvelteKit - Express/TypeScript Python Framework - Django, Flask Scripts - Vanilla JavaScript - ECMAScript (ES6/ES7/ES8) - TypeScript - Python HTML technologies - HTML5, CSS3, Sass, Less, and Scss - Tailwind CSS, Bootstrap, Material Design, Semantic UI, Ant Design Back-end - Node.js and Express.js - Python Django and Flask - Laravel and CodeIgniter - MySQL, PostgreSQL, and MongoDB Blockchain - Solidity, Smart Contract, DEFI, Crypto, Dapp - Hardhat, Truffle, Foundary - Web3, Ethers.js, Wallet Connect, Wagmi, ThirdWeb Cloud platform - AWS, AWS EC2, AWS Lambda, AWS S3, ElasticSearch - Google Cloud Platform, Firebase, Firebase Serverless If you have an idea you need created from scratch, I am happy to start from zero and rapidly create a prototype for you. If you have something existing that needs to be modified, I have lots of experience working with legacy systems. I am looking forward to working with you.
    vsuc_fltilesrefresh_TrophyIcon Solidity
    TypeScript
    AWS Amplify
    Firebase
    Blockchain
    Jenkins
    Docker
    API Integration
    API Development
    Web3
    Flask
    Django
    MERN Stack
    PHP
    Python
  • $40 hourly
    💡 𝑬𝒙𝒑𝒆𝒓𝒕 𝑿𝑹𝑷𝑳 & 𝑩𝒍𝒐𝒄𝒌𝒄𝒉𝒂𝒊𝒏 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒆𝒓 | 𝑰𝑪𝑶𝒔 | 𝑫𝒆𝑭𝒊 | 𝑵𝑭𝑻 𝑴𝒂𝒓𝒌𝒆𝒕𝒑𝒍𝒂𝒄𝒆𝒔 | 𝑪𝒓𝒐𝒔𝒔-𝑪𝒉𝒂𝒊𝒏 𝑩𝒓𝒊𝒅𝒈𝒆𝒔 I am an XRPL blockchain specialist with deep expertise in the entire XRPL ecosystem lifecycle—from token creation and ICOs to staking, NFT marketplaces, and cross-chain interoperability. Whether you need to launch a token with presale and airdrop mechanics, develop a yield farming system, or implement governance and automated trading solutions, I bring the skills to deliver scalable and secure blockchain applications. 🔹 𝕄𝕪 𝔼𝕩𝕡𝕖𝕣𝕥𝕚𝕤𝕖 𝕀𝕟𝕔𝕝𝕦𝕕𝕖𝕤: ✅ 𝐗𝐑𝐏𝐋 𝐓𝐨𝐤𝐞𝐧 𝐋𝐢𝐟𝐞𝐜𝐲𝐜𝐥𝐞 𝐌𝐚𝐬𝐭𝐞𝐫𝐲 – Token launch, ICO, presale, and airdrop game development ✅ 𝐗𝐑𝐏𝐋 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 – Custom integrations leveraging XRPL's built-in features ✅ 𝐃𝐞𝐅𝐢 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 – Staking, yield farming, and liquidity incentives ✅ 𝐍𝐅𝐓 𝐌𝐚𝐫𝐤𝐞𝐭𝐩𝐥𝐚𝐜𝐞𝐬 – XLS-20-based NFT platforms on XRPL ✅ 𝐆𝐨𝐯𝐞𝐫𝐧𝐚𝐧𝐜𝐞 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 – On-chain and off-chain voting mechanisms ✅ 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐞𝐝 𝐓𝐫𝐚𝐝𝐢𝐧𝐠 & 𝐕𝐨𝐥𝐮𝐦𝐞 𝐁𝐨𝐭𝐬 – Market-making and liquidity management ✅ 𝐂𝐫𝐨𝐬𝐬-𝐂𝐡𝐚𝐢𝐧 𝐁𝐫𝐢𝐝𝐠𝐞𝐬 – Secure interoperability between XRPL & BSC/Other Chains 🔹 𝕎𝕙𝕪 𝕎𝕠𝕣𝕜 𝕎𝕚𝕥𝕙 𝕄𝕖? ✔ 𝐌𝐚𝐬𝐭𝐞𝐫𝐲 𝐨𝐟 𝐭𝐡𝐞 𝐅𝐮𝐥𝐥 𝐗𝐑𝐏𝐋 𝐄𝐜𝐨𝐬𝐲𝐬𝐭𝐞𝐦 𝐋𝐢𝐟𝐞𝐜𝐲𝐜𝐥𝐞 ✔ 𝐃𝐞𝐞𝐩 𝐊𝐧𝐨𝐰𝐥𝐞𝐝𝐠𝐞 𝐨𝐟 𝐗𝐑𝐏𝐋 & 𝐄𝐕𝐌-𝐂𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞 𝐂𝐡𝐚𝐢𝐧𝐬 ✔ 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐞𝐝, 𝐇𝐢𝐠𝐡-𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 ✔ 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲-𝐅𝐨𝐜𝐮𝐬𝐞𝐝, 𝐒𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 ✔ 𝐏𝐫𝐨𝐯𝐞𝐧 𝐓𝐫𝐚𝐜𝐤 𝐑𝐞𝐜𝐨𝐫𝐝 𝐢𝐧 𝐃𝐞𝐅𝐢, 𝐍𝐅𝐓, 𝐚𝐧𝐝 𝐓𝐨𝐤𝐞𝐧𝐨𝐦𝐢𝐜𝐬 With a focus on XRPL’s high-speed, low-cost transactions, I build next-gen blockchain applications that drive adoption and growth. If you're looking for an expert in tokenomics, DeFi, NFT ecosystems, or XRPL innovations, let’s discuss your vision! 📩 ʟᴇᴛ’ꜱ ᴛᴀʟᴋ! ᴍᴇꜱꜱᴀɢᴇ ᴍᴇ ᴛᴏᴅᴀʏ ᴛᴏ ʙʀɪɴɢ ʏᴏᴜʀ ᴘʀᴏᴊᴇᴄᴛ ᴛᴏ ʟɪꜰᴇ. 🚀
    vsuc_fltilesrefresh_TrophyIcon Solidity
    PostgreSQL
    Node.js
    React
    JavaScript
    TypeScript
    Cryptocurrency Trading
    Bot Development
    NFT
    Decentralized Exchange
    DeFi
    Web3
    Ethereum
    Ripple
    Blockchain
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