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Rating is 4.7 out of 5.
4.7/5
based on 1,666 client reviews
  • $45 hourly
    • 5.0/5
    • (12 jobs)
    I have 4+ years of experience working with Blockchain, Artificial Intelligence and DevOps related technology. I have a degree in Computer Science and have prior experience dealing with research level mathematics. If you have the time feel free to checkout my GitHub: github.com/thinktanktom
    Featured Skill Ethereum
    Front-End Development
    DApps
    Cryptocurrency
    Docker
    Solidity
    Node.js
    Rust
    API
  • $20 hourly
    • 5.0/5
    • (94 jobs)
    ๐“๐จ๐ฉ-๐‘๐š๐ญ๐ž๐ ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง & ๐€๐ˆ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ž๐ซ | ๐Ÿ๐ŸŽ+ ๐˜๐ซ๐ฌ ๐„๐ฑ๐ฉ๐ž๐ซ๐ข๐ž๐ง๐œ๐ž | ๐–๐ž๐›๐Ÿ‘, ๐’๐ฆ๐š๐ซ๐ญ ๐‚๐จ๐ง๐ญ๐ซ๐š๐œ๐ญ๐ฌ, ๐‚๐ซ๐ฒ๐ฉ๐ญ๐จ ๐€๐ฉ๐ฉ๐ฌ, ๐€๐ˆ ๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง ๐Ÿ”น ๐’๐œ๐š๐ฅ๐š๐›๐ฅ๐ž ๐–๐ž๐›๐Ÿ‘, ๐’๐ž๐œ๐ฎ๐ซ๐ž ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง, and ๐’๐ฆ๐š๐ซ๐ญ๐ž๐ซ ๐€๐ˆ ๐’๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง๐ฌ. Looking for a senior blockchain developer or Web3 expert to build a next-gen crypto platform or AI-powered solution? Iโ€™m here to help. With over 10 years of experience, 1800+ hours logged, and a 100% job success rate, I specialize in creating secure, scalable, and innovative solutions that deliver real business value. ๐Ÿ’ก ๐’๐ž๐ซ๐ฏ๐ข๐œ๐ž๐ฌ ๐ˆ ๐Ž๐Ÿ๐Ÿ๐ž๐ซ ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ - Smart contract development (Ethereum, BSC, Tron, Polygon) - DeFi platforms & DEXs (staking, yield farming, trading bots) - NFT marketplace development (AI-powered pricing, fraud detection) - RWA tokenization, DAO platforms, Depin systems - Blockchain consulting for startups & enterprises ๐€๐ˆ + ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง ๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง - AI-enhanced smart contracts (self-learning logic, automation) - AI-backed crypto wallets with predictive tools - Cross-chain bridges using AI interoperability - DeFi with AI-powered analytics & trading strategies ๐–๐ž๐›๐Ÿ‘ & ๐€๐ฉ๐ฉ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ - Web3 app development using React.js, Next.js, Node.js - Crypto apps for iOS & Android with Flutter & Dart technology - Decentralized AI apps (Chatbots, dashboards, voice assistants) - Custom Web3, NFT marketplace, and smart UX experiences โœจ ๐–๐ก๐ฒ ๐‚๐ฅ๐ข๐ž๐ง๐ญ๐ฌ ๐‚๐ก๐จ๐จ๐ฌ๐ž ๐Œ๐ž?? - Top-rated freelance blockchain & AI developer - ISO 9001, ISO 27001, and ISO/IEC 27701 certified process - Fast communication, reliable timelines, free consultations - Transparent pricing with scalable & secure architecture โœจ ๐“๐ž๐œ๐ก ๐’๐ญ๐š๐œ๐ค - Blockchain: Solidity, Web3.js, Tron, EVM, Polygon, BSC - AI/ML: OpenAI, Langchain, Whisper, TensorFlow - Web/Mobile: React.js, Next.js, Node.js, TypeScript, Flutter, Express.js - DevOps: Docker, GitHub Actions, CI/CD Letโ€™s build your crypto app, smart contract, or AI platform. I was hoping you could send me a message for a free consultation. Iโ€™ll help you choose the right tech stack and strategy for your project.
    Featured Skill Ethereum
    Generative AI
    OpenAI API
    AI Development
    Hyperledger Fabric
    Next.js
    PIVX
    Smart Contract
    Blockchain
    Cryptocurrency
    Solidity
    Bitcoin
    React
    Mobile App Development
    Flutter
  • $111 hourly
    • 4.8/5
    • (70 jobs)
    โœ…Frontend: HTML, CSS, JS, TS, React, Vue, Svelte, Web3 โœ…Backend: Solidity, Rust, Golang, Python, Node โœ…Protocol: Solidity, Anchor, Hardhat, Foundry Software developer that enjoys tackling interesting challenges, designing novel solutions and problem solving.
    Featured Skill Ethereum
    Rust
    web3.js
    Golang
    Python
    Node.js
    Smart Contract
    Solidity
    React
    Linux
    Digital Marketing
    MQTT
    Vue.js
    DApps
  • $45 hourly
    • 4.9/5
    • (25 jobs)
    โญโญโญโญโญ "Akhil is totally fantastic. His work had a tremendous impact on our product. He is very punctual, responsive, and professional in every way imaginable." Hi, Iโ€™m Akhil โ€” a full-stack developer and AI/Web3 engineer with over 6 years of experience. I help startups and teams turn ideas into real, working products. Whether it's building smart contracts, AI tools, or full platforms from scratch, I can jump in and get things done fast. ๐Ÿ”ง What I Can Do โœ… 6+ years of Web3 experience: smart contracts, DeFi, NFT platforms, on-ramp/off-ramp payment systems, and more โœ… AI + Full Stack Development: skilled with Solidity, React, Node.js, TypeScript, Go, Python, OpenAI, LangChain, and cloud setup โœ… I run Coding Sheep: a small dev agency that helped launch 20+ Web3 and AI products in the past 4 years โœ… Clear and constant communication: you'll always know what's going on with your project ๐Ÿš€ Projects Iโ€™ve Worked On โค๏ธ Mooz โ€“ A marketplace for AI-generated music โค๏ธ Density โ€“ A crypto exchange for trading derivatives โค๏ธ LiveWager โ€“ Real-time online casino and betting platform โค๏ธ 3dSpot โ€“ AI tool that turns 2D images into 3D models ๐Ÿ† Why Clients Like Working With Me 1๏ธโƒฃ Trusted to Deliver โ€“ I focus on building real value, not just completing tasks 2๏ธโƒฃ Easy to Work With โ€“ I reply fast, stay available, and keep everything clear 3๏ธโƒฃ Can Work in Any Codebase โ€“ Whether the code is new, messy, or old, I can pick it up quickly and start improving it 4๏ธโƒฃ I Solve Problems โ€“ I donโ€™t stop at writing code โ€” I help you figure out what works best for your product If you're building something in Web3 or AI, or just need a reliable engineer to get things moving, Iโ€™d love to hear from you.
    Featured Skill Ethereum
    DApps
    Cryptocurrency
    Blockchain
    Solana
    Tezos
    Bitcoin
    React
    Node.js
    web3.js
    NFT Marketplace
    Solidity
    Smart Contract
    Blockchain Development
  • $60 hourly
    • 5.0/5
    • (34 jobs)
    Top 1% Freelancer: Upwork has awarded this freelancer the Expert Vetted Badge! Blockchain | AI | Mobile Co-Founder @InMindSoftware | CTO @ TIEX Tech enthusiast, always looking to enhance and activate businesses for my customers through new technologies, especially blockchain, AI, and mobile. Amateur runner. Our team enjoys doing great work and forming long-term partnerships with our clients. We love innovation and working hard to solve problems that others cannot.
    Featured Skill Ethereum
    Blockchain
    Mobile App Development
    Android App Development
    iOS Development
    Kotlin
    Java
    Amazon Web Services
    Swift
    Node.js
    Objective-C
  • $35 hourly
    • 5.0/5
    • (21 jobs)
    Hi there! If you're visiting my page, perhaps you're looking for a professional. I'm a software developer, programmer, and tech lead with 7 years of experience in the industry. My strong sides are responsibility, attention to client's needs, strong will to achieve the final results of team efforts. I've been working with various programming languages and platforms. My favor is Python for the last 6 years. Also been experienced with JS, PHP, Android, Java, Dart. It's enough comfortable for me to work both in the team and stand-alone development. I can do IT =)
    Featured Skill Ethereum
    Web Development
    RESTful Architecture
    Angular
    Android
    Blockchain
    Raspberry Pi
    Django
    React
    Machine Learning
    JavaScript
    TensorFlow
    Python
  • $75 hourly
    • 4.7/5
    • (222 jobs)
    Stop paying for mediocre IT services that drain your budgetโ€”partner with us for digital solutions that push your boundaries. I'm Roy, founder of Interactivated Solutions. Since 1999, our 25+ years of Dutch innovation help businesses unlock their full potential. My team comprises 75+ full-time IT specialists and a network of freelance experts, all working remotely, to provide you with the best skills and talent to blend cutting-edge technology with a robust Agile mindset, ensuring that every project not only meets but exceeds your expectations. At Interactivated, we provide tailored solutions by delivering individual developers or assembling complete teams focused on E-Commerce, Marketplaces, Custom Software, SaaS, Apps, and more - ensuring a smooth, hassle-free experience for you. Core Expertise: * GenAI โ€ข E-Commerce: Platforms, applications, stores, plugins, and mobile apps. AI/ML Solutions for E-Commerce: Implementing AI virtual shopping assistants, bespoke plugins and extensions, and other intelligent solutions. โ€ข Marketplaces: User-friendly scalable marketplace platforms for startups and scaleups, facilitating seamless transactions and user interactions. Smart Contract Solutions for E-Commerce: Including NFT marketplaces, wallets, and ICO launches. โ€ข Custom Software: Tailored software solutions designed to meet the unique needs of your business, ensuring functionality and scalability. Including rapid prototyping, PoC, and MVP development to accelerate your product journey, test your hypotheses, validate ideas, and secure vital investor support for a quick and efficient market launch. In eCommerce, we excel with headless, PWA, and Composable Commerce solutions, utilizing technologies such as Adobe Commerce, Shopify Plus, BigCommerce Enterprise, and Commerce Tools. For custom software projects, we tailor solutions to your specific needs, ensuring seamless integration with existing systems and delivering scalable, high-performance applications. We develop and optimize marketplace platforms, providing end-to-end solutions that facilitate seamless transactions, enhance user experiences, and support business growth. We understand that every business is unique, and a one-size-fits-all approach simply won't cut it. That's why we offer a comprehensive suite of custom digital solutions, carefully tailored to meet the specific needs and objectives of our clients business and industry. Our approach is technology-agnostic, recommending the best stack for each project. Types of Projects We Deliver: โ€ข Healthcare Uber Platform โ€ข Etsy for Local Craftsmen โ€ข Airbnb Alternatives โ€ข AI Nutrition and Meal Planning App โ€ข Steam-like Cloud Gaming Platform โ€ข Dropbox for Legal and Government โ€ข NFT History Learning Game โ€ข NFT Marketplaces โ€ข All Prototype, PoC and MVP Development โ€ข E-commerce: - Design and Development of New Storefronts - Seamless Integration of 3rd Party Solutions - Custom Plugin Development and Integrations - Site Upgrades Technologies We Use: - PHP and Laravel Framework, JavaScript, TypeScript, React, Vue, Node, Next, Nuxt, GoLang, Python, C#/.Net Core - Cloud Services: AWS, Azure, Google Cloud, Hetzner Cloud, Vercel - E-commerce back-ends: Magento2 (Adobe), Shopify, BigCommerce, Laravel, WooCommerce (rare cases) Check out our GitHub: github.com/interactivated Team and Specialist Solutions: โ€ข On-Demand Specialists: Hire individual experts for short-term or long-term project needs. โ€ข Complete Team Assembly: We build dedicated Agile teams tailored to your project requirements. โ€ข End-to-End Project Management: We manage complete projects from concept development and product realization to market launch Our Clients: โ€ข Startups โ€ข Scale-Ups โ€ข SMEs Why Choose Interactivated? In todayโ€™s fast-paced world, business owners face overwhelming challenges and decisions on a daily basis. Building an IT solution can spiral into chaos, causing stress and a feeling of overwhelm. At Interactivated, we offer a no-hassle, stress-free alternative. We partner with you to transform IT chaos into a streamlined, efficient process that not only meets your business objectives but propels them forward. Here's how we do it: Peace of Mind: We are committed to a transparent, client-focused journey. Less stress for you means less stress for us, resulting in a longer, happier, and more successful partnership. Your Success is Our Success: We focus on launching new products with ruthless prioritization, shaping LEAN prototypes, PoCs, MVPs, and full products. Our goal is to help you validate critical assumptions quickly and speed up market entry. Simplicity and Results: We break down complex IT challenges into manageable elements, delivering results iteratively so youโ€™re never in the dark. We adjust reporting to your needs, ensuring you understand what youโ€™re paying for. Partner with Interactivated to challenge the status quo, unlock limitless possibilities, building market-ready solutions for sustainable business growth.
    Featured Skill Ethereum
    Machine Learning
    Web Development
    .NET Framework
    Python
    Golang
    Vue.js
    Website Migration
    TypeScript
    Laravel
    Business Analysis
    React
    PHP
    Node.js
    Magento 2
    NFT Marketplace
  • $65 hourly
    • 5.0/5
    • (40 jobs)
    Welcome to my freelance profile! I'm Alexis, a passionate data scientist/data engineer, ready to tackle your challenges with enthusiasm and expertise. Here's what I can do for you: ๐Ÿ› ๏ธ Design and implementation of data pipelines to handle massive data volumes (~TB). Data Retrieval: โ€ข Web scraping (Playwright, Selenium, Request with headers/cookies) Examples of scraped services: Telegram, Instagram, Google, Google Maps, LinkedIn, Twitter... โ€ข API interactions โ€ข Reading files in various formats: JSON, CSV, text, Excel Data Processing: โ€ข Cleaning and processing data with Pandas/Polars/Apache Spark โ€ข Storage in suitable databases: MySQL, PostgreSQL, InfluxDB & Neo4J โ€ข Or data wharehouses : BigQuery, Snowflake โ€ข Dbt, Airtable, Airflow, Pyspark, Kafka Cloud Deployment: โ€ข GCP / AWS ๐Ÿ” Application of advanced machine learning/AI/LLM models to extract relevant insights. โ€ข XGBoost / LightGBM for 'classic' classification algorithms โ€ข HuggingFace & Transformers for processing textual data โ€ข LLMs/Langchain for Question Answering with a database or building chatbots โ˜๏ธ Deployment of fast and reliable APIs in the cloud. โ€ข Flask, FastAPI, Dash, or Streamlit โ€ข Docker / Kubernetes โ€ข Apache druid ๐Ÿ“ˆ Trading indicators computing, strategies backtesting and live orders execution on various exchanges โ€ข Custom indicators going from candles and moving averages signals to NLP applied to social media posts. โ€ข Implementation of pre-defined strategy or machine learning model training in order to estimate the best strategy given a set of indicators and dates of entry/exit. โ€ข Spot/future/margin orders on exchange or you choice, CEX, DEX ... ๐Ÿ’ผ Diverse Experiences: โ€ข Blockchain data analysis โ€ข Process automation, especially in trading and financial analysis โ€ข Business lead generation through social media scraping โ€ข Cloud infrastructure cost estimation ๐ŸŒŸ Commitment to quality and client satisfaction. โ€ข Documented & well commented code, including strong typing, docstrings and pep8 compliance. โ€ข CI/CD - Git hooks Contact me to discuss how we can collaborate to achieve your goals !
    Featured Skill Ethereum
    Data Processing
    API
    Algorithm Development
    Scripting
    Google Cloud Platform
    API Development
    Data Scraping
    Data Mining
    Flask
    Scrapy
    Machine Learning
    Data Science
    Python
    Natural Language Processing
  • $55 hourly
    • 5.0/5
    • (14 jobs)
    ๐Ÿ” TOP 10% of Upwork Agencies ๐Ÿ’ฏ Job Success โญ๏ธ 5-Star Rating ๐Ÿ† Hackathon winners ๐Ÿ”Ÿ/๐Ÿ”Ÿ Smart Contracts Rating Audited by Hacken โœ… โญ๏ธโญ๏ธโญ๏ธโญ๏ธโญ๏ธ "We look forward to continuing our collaboration on the next phase! Yevhen, Dexola, and the rest of the team have been an absolute pleasure to work with. Very knowledgeable and responsive, would highly recommend!" โญ๏ธโญ๏ธโญ๏ธโญ๏ธโญ๏ธ "It was a pleasure working with Yevhen. He is highly skilled and very professional. Will definitely work with him again. Highly recommended." As a CTO with over 10 years of experience and 45 blockchain-based projects completed, I have a proven track record in delivering high-quality, scalable, and secure web solutions. My expertise lies in blockchain and Web3 technologies. I am passionate about building innovative blockchain and Web3 products that solve real-world problems. Furthermore, I am committed to working closely with my clients to understand their needs and ensure that their projects are a success. ๐Ÿ“ Blockchain & Web3 Development: - DAO, DeFi and GameFi solutions - EVM Chain (Ethereum/ETH) - Solana - Solidity, Rust ๐Ÿ“ Smart Contracts: - NFT Smart Contract - Staking, Minting, Airdrops - Security Smart Contracts Audit ๐Ÿ“ Full-Stack Development - Node.js, React.js, web3.js, Vue.js, TypeScript etc. - API Integration - Building & Deploying Scalable and Secure Applications ๐Ÿ“ Trading & Automation: - Decentralized Exchange (DEX/CEX) - Trading Bots (bonding curve keys, volume bot, telegram bot) - Crypto Casinos ๐Ÿ“ Integration & Bridges: - Wallet Integration (WalletConnect, Coinbase Wallet, etc.) - Blockchain Bridges โŒ›๏ธ Proven success in delivering projects on time and within budget ๐Ÿ™Œ Excellent communication and interpersonal skills Let's hop on a call and discuss how I can make your project happen.
    Featured Skill Ethereum
    AI Chatbot
    Blockchain, NFT & Cryptocurrency
    Cryptocurrency
    React
    Ethers.js
    Web3
    DeFi
    Blockchain
    Smart Contract Development
    Solana
    Solidity
    Node.js
    Smart Contract
    web3.js
  • $50 hourly
    • 5.0/5
    • (6 jobs)
    I've been working on Blockchain-related projects since 2019. Besides that, I've been doing back-end / embedded / system software development since 2011. I designed and develop many back-end applications for Windows and Linux Platform. Major programming languages I've used are Solidity/Solana(Rust)/Web3/JavaScript/Go-lang/C/C++, plus few popular scripting languages. I've also experienced Truffle, Hardhat, Ganache, STL, Boost, multithreading, IPC, Socket Programming, etc My areas of expertise: โœ… Token Implementation: ERC-20, ERC-721, ERC-721A, ERC1155, ERC-1363, Web3 โœ… Smart contract security audit (EVM and SOLANA) โœ… Block-chain dApps: Defi, Metaverse, NFT, DAO, IDO LaunchPad, Staking, Lending/Borrow. โœ… Payments integrations with Stripe, Coinbase (Bitcoin, Ethereum, etc.) โœ… Block-chain Plugin: metamask, trustwallet, Binance Wallet, etc. โœ… VoIP Software: SIP, H.323, Kamailio, OpenSIPS, rtpengine, RTPProxy, FreeSWITCH, Asterisk. โœ… Networking firewall designing (IPTables, DHCP, PPPOE, STUN, ICE.) Programing Language: Solidity, Solana(Rust), Vyper, Web3, JavaScript, Go-Lang, C, C++ Blockchain Stack: Web3, Ether.js, Truffle, Hardhat, MetaMask/Remix, BTC, ETH, IBM Hyperledger, IPFS I really appreciate your quick response and love to discuss this project further with you.
    Featured Skill Ethereum
    Blockchain Development
    VoIP Software
    Cryptocurrency
    DApps
    Solidity
    Blockchain Architecture
    Blockchain
    Smart Contract
    C
    ExpressJS
    JavaScript
    Node.js
    C++
  • $40 hourly
    • 4.9/5
    • (24 jobs)
    Welcome! ๐Ÿ‘‹ I'm delighted to connect with you. I bring over 9 years of expertise as a seasoned Full Stack Developer, specializing in Blockchain and Web3 development. ๐Ÿš€ Are you ready to elevate your web, mobile, or Blockchain projects to new heights? Here's what I bring to the table: ๐Ÿ› ๏ธ Technical Skills: ============================================================================ Web: ReactJS, Angular, Next.js, Node.js, Express.js, Django, Laravel, CSS 3, HTML 5, Tailwind CSS. Mobile: React Native. Database: MySQL, MSSQL. API: Restful APIs. E-commerce: WordPress, WooCommerce, Shopify. Other: Vue.js, Nuxt.js, TypeScript, CodeIgniter, MongoDB, Ruby on Rails. DevOps: MEAN Stack, .NET Core, .NET Framework. Blockchain: Smart Contracts, Solidity, Ether.js, Web3.js, DApps. ๐Ÿ’ก Challenges I Solve: ============================================================================ E-commerce Website Challenges Data Complexity Seamless Blockchain Integration Mobile App Development NopCommerce Untangling User-Friendly Interface Crafting ๐ŸŒ Why Choose Me: ============================================================================ 9+ years of expertise Blockchain development skills Client satisfaction focus Regular project updates Flexible availability Blockchain Development Services: ============================================================================ ERC-20, Solidity, Smart Contract development Blockchain-based services: Ethereum, EOS, Other coins Cryptocurrency & Arbitrage/Market Making Bot Development Wallet Integration: Electrum, Parity, Mist, Metamask, MyEtherWallet API Development: blockchain.info, poloniex.com, bitfinex.com, hitbtc.com, coinbase.com, kraken.com, cex.io Technology Experience: ============================================================================ Nodejs, Blockchain Development Stack Solidity, Parity, EOSIO, Trezor, Ledger, MetaMask/MIST/Remix, BTC, Electrum, ETH DApps (decentralized applications) ERC20 tokens development EOS Smart Contract development Distributed Ledger technology Code versioning tools: Git, Jira, Bitbucket, SVN Node JS & Python Scripting languages, REST/JSON API integration Agile and DevOps environment, Elliptic Curve Cryptography(ECC), P2P Networking. ๐Ÿ‘ฅ Previous Experience: ============================================================================ 50+ successful projects Worked with renowned clients Extensive Mobile and Decentralized app development ๐Ÿค Let's Work Together: For web, mobile, or Blockchain projects, let's connect! I prioritize outstanding results and client satisfaction. Excited for a stable and long-term cooperation! ๐Ÿ“ฌ Contact Me: Message me to discuss your project or schedule a consultation. Ready to contribute to your project's success! ๐Ÿš€
    Featured Skill Ethereum
    Bitcoin
    Android App Development
    Blockchain
    Mobile App Development
    Flutter
    iOS
    Ionic Framework
    Amazon Web Services
    Node.js
    Python
    AngularJS
  • $19 hourly
    • 4.9/5
    • (31 jobs)
    ๐Ÿ† 100% JSS โญTop Rated Plus ๐Ÿ•ฐ๏ธ ๐€๐ฏ๐š๐ข๐ฅ๐š๐›๐ฅ๐ž ๐ข๐ง ๐ญ๐ก๐ž ๐”๐’, ๐‚๐š๐ง๐š๐๐š, ๐”๐Š, ๐€๐ฎ๐ฌ๐ญ๐ซ๐š๐ฅ๐ข๐š, ๐จ๐ซ ๐ฉ๐ซ๐ž๐Ÿ๐ž๐ซ๐ซ๐ž๐ ๐ญ๐ข๐ฆ๐ž ๐ณ๐จ๐ง๐ž๐ฌ ๐Ÿฅ‡ GOLD MEDALIST ๐ŸŒŸ 7+ Years of Experience โœ” 80+ Successful Projects ๐Ÿ•’ 2400+ Hours of Development Work โœ… Guarantee of High-Quality Product Delivery ๐Ÿ“ž Availability: 40+ hours per week ๐๐ซ๐ข๐ง๐ ๐ข๐ง๐  ๐‚๐ฎ๐ญ๐ญ๐ข๐ง๐ -๐„๐๐ ๐ž ๐’๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง๐ฌ ๐ข๐ง ๐…๐ฎ๐ฅ๐ฅ ๐’๐ญ๐š๐œ๐ค ๐Œ๐„๐‘๐ & ๐ƒ๐ฃ๐š๐ง๐ ๐จ, ๐๐ฒ๐ญ๐ก๐จ๐ง ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ ๐ฐ๐ข๐ญ๐ก ๐Ž๐ฏ๐ž๐ซ 7 ๐˜๐ž๐š๐ซ๐ฌ ๐จ๐Ÿ ๐„๐ฑ๐ฉ๐ž๐ซ๐ญ๐ข๐ฌ๐ž I am a Senior Full Stack Developer with expertise in MERN Stack, Python (Django), and Blockchain Development. With a strong background in web and blockchain technologies, I specialize in building scalable, high-performance applications tailored to business needs. My experience spans across frontend and backend development, smart contracts, DeFi, NFT marketplaces, and enterprise blockchain solutions. What I Offer: โœ… Full Stack Web Development โ€“ Expert in MERN (MongoDB, Express.js, React.js, Node.js), Python (Django, Flask), Next.js, and NestJS for building secure, fast, and user-friendly web applications. โœ… Blockchain Development โ€“ Proficient in Solidity, Hyperledger, Smart Contracts, NFT Marketplaces, DeFi, and DAO development for secure and transparent decentralized applications. โœ… Frontend Expertise โ€“ Skilled in React.js, Angular, and Next.js to develop interactive, high-performing UIs with seamless user experiences. โœ… Backend & Database Management โ€“ Strong experience in Node.js, Express.js, Django, MongoDB, SQL, and PostgreSQL, ensuring smooth backend operations and database optimization. โœ… Crypto Exchange Development โ€“ Hands-on experience in developing secure crypto exchange platforms, integrating payment gateways, and optimizing trading experiences. Why Work With Me? โœ” Proven Experience โ€“ Successfully delivered multiple web and blockchain projects, ensuring reliability and efficiency. โœ” Scalability & Security โ€“ Prioritizing performance, data security, and future-ready solutions. โœ” End-to-End Development โ€“ From planning to deployment, I handle the complete development cycle. โœ” Effective Communication โ€“ Clear project updates, smooth collaboration, and adherence to deadlines. Letโ€™s collaborate to bring your web or blockchain project to life! ๐Ÿš€ Feel free to reach out, and letโ€™s discuss how I can help. Fullstack Developer | MERN| | ReactJs| Angular | NextJS| Machine Learning| Python| Chatbot development| NodeJs | MongoDB | SQL | Express | Django| Full Stack Blockchain Developer | Hyperledger | Solidity | MERN | Python | NFT | Crypto Exchange | Smart Contracts | DeFi | DAO
    Featured Skill Ethereum
    Dart
    Firebase
    Mobile App Development
    React Native
    Large Language Model
    LangChain
    Natural Language Processing
    OpenCV
    Chatbot Development
    Artificial Intelligence
    Machine Learning
    Django
    Python
    Next.js
    Node.js
  • $75 hourly
    • 4.9/5
    • (24 jobs)
    Senior blockchain developer with 7+ years of experience in Web3 & a strong background in writing smart contracts. Proficient in using various blockchain technologies to create high-performance and scalable applications. In addition to my expertise, I am well-versed in Hyper ledger, EVM, Cryptography, DeFi, NFTs, Dexs, Layer 2, Bridges, Wallets, Chainlink Oracles & Liquidity Pools. Although my core expertise are in Solidity, I also have extensive experience with Javascript, GoLang & some exposure to Rust. I have designed, built, tested, deployed, and maintained high-traffic, complex smart contracts. I have designed and developed product architectures that balanced flexibility with speed & enabled rapid iteration. Technologies -Solidity, GoLang, Node.JS, Rust, Javascript, C++ -AWS & Google Cloud Certified -React Native, React.js Clean scalable Code with excellent Communication - Let's talk about your project!
    Featured Skill Ethereum
    React Native
    Augmented Reality
    UI/UX Prototyping
    Virtual Reality
    DApps
    iOS Development
    Android App Development
    Blockchain
    Node.js
    Artificial Intelligence
    Smart Contract
    Solidity
    DeFi
  • $55 hourly
    • 4.3/5
    • (40 jobs)
    Hello! I'm Arshad K., a seasoned Full Stack Developer with over 10 years of experience in delivering innovative and immersive gaming experiences. My expertise spans Casino platform development, Unity game development, and AR/VR applications, along with Blockchain integration and smart contract development. Over the years, I've honed my skills in creating engaging, high-quality casino games, cutting-edge AR/VR experiences, and integrating blockchain technologies into various applications. Here's an overview of my areas of specialization: Casino Game & Platform Development: Casino Platform Development: From building robust and scalable casino platforms to ensuring smooth user experiences and payment integration. Casino Game Development: Expertise in designing and developing a wide range of engaging casino games such as Poker,, Blackjack, Roulette, Baccarat, Dice games, Mystery Box Games, and more. Mobile Casino Games: Building optimized, high-performance mobile casino applications for iOS and Android. Lottery and Raffles Applications: Developing exciting and interactive lottery and raffle-based games with robust backend systems. Game Development in Unity & Other Engines: Unity Game Development: Leveraging Unity to create immersive, high-quality 2D and 3D games for mobile, desktop, and web platforms. AR/VR Game Development: Specializing in AR/VR experiences for MetaQuest 2, MetaQuest 3, and Vision Pro. I design and develop interactive, cutting-edge AR/VR games and applications that offer truly immersive experiences. Other Game Engines: Proficiency in Unreal Engine and Godot for advanced game development and simulation projects. Blockchain & Web3 Development: Blockchain Integration: Expertise in integrating blockchain technologies into gaming platforms, including cryptocurrency payments, smart contracts, and NFT marketplaces. Smart Contracts & dApps: Strong experience with Ethereum, TON, and other blockchain platforms to develop secure, decentralized applications (dApps) and smart contracts. Crypto Wallet Integration: Seamless integration of crypto wallets into applications, enabling secure transactions and user interaction. Additional Expertise: UI/UX Design for Gaming Platforms: Focused on crafting intuitive and engaging user interfaces for casino platforms and games. Payment Gateway Integration: Ensuring smooth and secure payment processing systems for casino and gaming platforms. Interactive Telegram Bots & Clicker Games: Experience in developing Telegram-based mini-games, including clicker games and other interactive bots. I pride myself on delivering solutions that are tailored to your unique needs, ensuring they are high-quality, engaging, and innovative. Whether you're looking for a sophisticated casino platform, a fun mobile game, or an immersive AR/VR experience, I'm committed to bringing your vision to life with cutting-edge technologies. Letโ€™s create something amazing together! Feel free to reach out for any inquiries or project collaborations.
    Featured Skill Ethereum
    Unity
    Gatsby.js
    Socket.io
    Mobile Game
    Node.js
    Tailwind CSS
    Bitcoin
    AWS Lambda
    Magento
    WordPress
    React
    Figma
    Board Game
    Card Game
    Game Customization
    2D Game Art
    Mobile Game Development
    UX & UI Design
    Game Design
    UI/UX Prototyping
    Game
    Online Gambling Website
    Game Development
  • $35 hourly
    • 5.0/5
    • (1 job)
    ๐Ÿ‘‹ Greetings! ๐Ÿ˜Š I'm Faheem, an experienced ๐—ช๐—ฒ๐—ฏ ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—ฒ๐—ฟ and ๐—•๐—น๐—ผ๐—ฐ๐—ธ๐—ฐ๐—ต๐—ฎ๐—ถ๐—ป ๐—˜๐—ป๐˜๐—ต๐˜‚๐˜€๐—ถ๐—ฎ๐˜€๐˜ with over ๐Ÿด+ ๐˜†๐—ฒ๐—ฎ๐—ฟ๐˜€ of specialized expertise in ๐—๐—ฎ๐˜ƒ๐—ฎ๐—ฆ๐—ฐ๐—ฟ๐—ถ๐—ฝ๐˜ (๐—ฅ๐—ฒ๐—ฎ๐—ฐ๐˜๐—๐—ฆ, ๐—ก๐—ผ๐—ฑ๐—ฒ๐—๐—ฆ, ๐—˜๐—–๐— ๐—”๐—ฆ๐—ฐ๐—ฟ๐—ถ๐—ฝ๐˜), ๐—ช๐—ฒ๐—ฏ๐—”๐˜€๐˜€๐—ฒ๐—บ๐—ฏ๐—น๐˜†, ๐—ฅ๐˜‚๐˜€๐˜, ๐—ฆ๐—ผ๐—น๐—ถ๐—ฑ๐—ถ๐˜๐˜†, ๐—š๐—ผ๐—น๐—ฎ๐—ป๐—ด, ๐—š๐—ฟ๐—ฎ๐—ฝ๐—ต๐—ค๐—Ÿ, and much more. When it comes to web development, I have a remarkable ability to create stunning websites and deliver top-notch services. From crafting custom themes that perfectly suit your vision ๐ŸŽจ๐Ÿ’ช to effortlessly tackling complex projects, my diverse portfolio spans various business types: ๐Ÿ›๏ธ E-commerce shops ๐Ÿ“ Review-based systems ๐Ÿ“‚ Custom directories ๐Ÿ“… Events planners ๐ŸŽฎ Game scoring systems ๐Ÿข Real estate ๐Ÿ‘ฅ Personal portfolios ...and many more! But that's not all! My true passion lies in the blockchain world, where I excel as a ๐—™๐˜‚๐—น๐—น ๐—ฆ๐˜๐—ฎ๐—ฐ๐—ธ ๐—•๐—น๐—ผ๐—ฐ๐—ธ๐—ฐ๐—ต๐—ฎ๐—ถ๐—ป ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ with over ๐Ÿฑ+ ๐˜†๐—ฒ๐—ฎ๐—ฟ๐˜€ of experience! ๐Ÿš€ Specializing in Bold (sans): ๐—•๐—ฎ๐—ฐ๐—ธ๐—ฒ๐—ป๐—ฑ ๐—ฑ๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—บ๐—ฒ๐—ป๐˜, ๐——๐—ฎ๐˜๐—ฎ๐—ฏ๐—ฎ๐˜€๐—ฒ ๐—ผ๐—ฝ๐˜๐—ถ๐—บ๐—ถ๐˜‡๐—ฎ๐˜๐—ถ๐—ผ๐—ป, ๐—ฆ๐—ฒ๐—ฟ๐˜ƒ๐—ฒ๐—ฟ ๐˜€๐—ฒ๐˜๐˜‚๐—ฝ, ๐—ช๐—ฒ๐—ฏ ๐Ÿฏ.๐Ÿฌ, ๐——๐—ฒ๐˜ƒ๐—ข๐—ฝ๐˜€, ๐—ฐ๐˜‚๐˜€๐˜๐—ผ๐—บ ๐—ฏ๐—น๐—ผ๐—ฐ๐—ธ๐—ฐ๐—ต๐—ฎ๐—ถ๐—ป ๐—ฑ๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—บ๐—ฒ๐—ป๐˜, ๐—ฎ๐—ป๐—ฑ ๐—”๐—ฃ๐—œ ๐—ถ๐—ป๐˜๐—ฒ๐—ด๐—ฟ๐—ฎ๐˜๐—ถ๐—ผ๐—ป with other services. My expertise covers a wide array of technologies: ๐Ÿ”จ JavaScript (ReactJS, NodeJS, ECMAScript) ๐ŸŒŸ WebAssembly ๐ŸŒŸ Rust ๐ŸŒŸ Solidity ๐ŸŒŸ Golang ๐ŸŒŸ GraphQL ๐ŸŒŸ PostgreSQL ๐ŸŒŸ LevelDB, RocksDB ๐ŸŒŸ PlayCanvas, WebXR ๐ŸŒŸ Blockchain Protocols ๐ŸŒŸ Copy trading protocols and architecture ๐ŸŒŸ Smart Contract Audit ๐ŸŒŸ Exchange development (CEX) ๐ŸŒŸ Decentralized exchange development (DEX) ๐ŸŒŸ Arbitrage and Trading bots development ๐ŸŒŸ ICO/IDO/IBCO/LBP/IFO ๐ŸŒŸ Flash loans bots ๐ŸŒŸ Front-running, snipe, and sandwich bots ๐ŸŒŸ TradingView configuration ๐ŸŒŸ Meta, Metaverse, DeFi, NFT, GameFi I've contributed to notable projects like ๐—˜๐—น๐—ฟ๐—ผ๐—ป๐—ฑ (๐—˜๐—š๐—Ÿ๐——), where I successfully launched an ๐—œ๐—˜๐—ข and developed a cutting-edge sharding system. ๐ŸŒ Additionally, I've been involved in building and auditing secure payment gateways for projects like ๐—–๐—ฟ๐˜†๐—ฝ๐˜๐—ผ ๐—ช๐—ฎ๐—น๐—น๐—ฒ๐˜ ๐—•๐—ฟ๐—ฒ๐—ฎ๐—ฑ (๐—•๐—ฅ๐——) and ๐—–๐—ผ๐—ถ๐—ป๐—ฃ๐—ฎ๐˜†๐—บ๐—ฒ๐—ป๐˜๐˜€, ensuring the safe storage of cryptocurrency funds. With hands-on experience in various services and technologies like ๐—”๐—ช๐—ฆ, ๐—Ÿ๐—ถ๐—ป๐˜‚๐˜…, ๐——๐—ผ๐—ฐ๐—ธ๐—ฒ๐—ฟ, ๐—๐—ฒ๐—ป๐—ธ๐—ถ๐—ป๐˜€, ๐—š๐—ถ๐˜, and more, I guarantee the stability and security of your blockchain applications. ๐Ÿ›ก๏ธ So, whether you're looking for a top-notch Full Stack Developer to create visually appealing and responsive websites, or a Blockchain Expert to revolutionize your decentralized projects, I'm your go-to professional! ๐ŸŒŸ Let's connect over Zoom and discuss your project further. ๐Ÿ“ž๐Ÿ‘€
    Featured Skill Ethereum
    MongoDB
    Amazon Web Services
    Web3
    Solidify
    DeFi
    Back-End Development
    Blockchain
    React
    Docker
    NFT
    Blockchain Architecture
    Smart Contract
    Node.js
    JavaScript
  • $60 hourly
    • 5.0/5
    • (37 jobs)
    ๐Ÿ’Ž Hackathon + Grant Winner (Starknet Thailand 2024, A51.Finance) โœจ Praised by Kerberus.com founder (Top 10 PayPal Hacker, Dropbox Hall of Fame) ๐Ÿฅ‡ Top 1% EVM + Solana Talent on Upwork ๐Ÿ“ˆ $33M+ TVL | 28+ DApps Built | 7+ Token TGEs ๐Ÿ‘‹ Hey! Iโ€™m Sami โ€” a full-stack product engineer specializing in Blockchain, AI, and rapid product development. I take your app from idea to working product in days, not months, starting at just $500. From tokenized protocols and smart contract systems to GPT-powered apps and real-time dashboards โ€” I help startups and teams ship fast and scale smart. ๐Ÿš€ What I Do Best ๐Ÿ”ง MVPs & Full App Builds Rapid prototyping with tools like Replit, Cursor, and Framer โ€” or built from scratch with production-grade stacks. ๐Ÿง  AI-Powered Systems OpenAI/GPT integrations, vector DBs, agents, internal copilots, smart automation, and analytics bots. ๐Ÿช™ Blockchain Engineering Smart contracts, token launches, DeFi protocols, liquidity automation, staking, cross-chain messaging, and NFT infra. ๐Ÿ“Š Dashboards & Internal Tools Admin panels, analytics dashboards, Airtable-style views, and operational control centers. ๐Ÿ“ฆ Full-Stack Architecture Frontend, backend, infra, and on-chain โ€” fully integrated and ready to deploy. ๐Ÿ›  Tech Stack Frontend: React, Next.js, TypeScript, Tailwind, Framer Backend: Node.js, NestJS, Express, Golang AI/ML: OpenAI, LangChain, Pinecone, Vercel AI SDK Blockchain: Solidity, Rust, Cairo, Foundry, Hardhat, Web3.js, Ethers.js Infra & Cloud: Supabase, Vercel, AWS, Docker Data: PostgreSQL, MongoDB, Redis, Dune, The Graph ๐Ÿงญ Ecosystems & Protocols Chains: Ethereum, Solana, Arbitrum, Optimism, zkSync, Starknet, BNB, Polygon Cross-Chain: LayerZero, Wormhole, Axelar, ThorChain DEXs: Uniswap, Curve, PancakeSwap, Raydium, 1inch, Jupiter Token Standards: ERC-20, ERC-721, ERC-1155, SPL Enterprise: Hyperledger Fabric, Quorum ๐Ÿง  I Can Help You With... Blockchain architecture & protocol design Tokenomics, liquidity strategies, and yield mechanisms Smart contract audits and gas optimization AI feature planning and system integration Product scoping, dev workflows, and fast iterations Shipping your idea to users or investors in record time ๐Ÿ“ฉ Letโ€™s Build Something Great โ€” and Fast. Click "Invite" and tell me what youโ€™re working on. Iโ€™ll bring it to life.
    Featured Skill Ethereum
    Crypto Wallet
    Tokenomics
    MERN Stack
    NFT Marketplace
    NFT Minting
    DApps
    Smart Contract Development
    Cryptocurrency
    Web3
    Blockchain Development
    Blockchain, NFT & Cryptocurrency
    DeFi
    Solidity
    Solana
  • $30 hourly
    • 4.3/5
    • (16 jobs)
    Blockchain - Smart Contracts - DEFI Apps - DApps - Wallets - Crypto Exchange - Trading Bots Are you looking for a skilled and experienced Blockchain developer to bring your ideas to life? Look no further! With 10+ years of experience in developing Smart Contracts, DEFI Apps, DApps, Digital Wallets, Crypto Exchanges, and Trading Bots, I am well-equipped to handle your project. In addition to my expertise in Blockchain development, I bring a wealth of coding experience spanning over 18 years. I am proficient in technologies such as ASP.Net, .Net Core, React Native, Node.Js, and the MERN Stack. My knowledge extends to Linux, SQL, DevOps, and project management tools like JIRA, Trello, Asana, and GitHub. Throughout my career, I have had the privilege of working with high-profile clients from around the world. I have successfully delivered projects in various domains, including custom Windows application development, database application development, API development and integration, ecommerce solutions, and banking and insurance software solutions. Furthermore, I have expertise in iOS/Android app development. When you choose to work with me, you can expect professionalism and dedication. My commitment to delivering quality work sets me apart from others. Here are the traits that differentiate me as a freelancer: 1. On-time Delivery: I understand the importance of meeting deadlines and will ensure that your project is delivered promptly. 2. Open to Change and Compatibility: I am flexible and adaptable, willing to make changes and adjustments based on your requirements. 3. Honest and Open Communication: I believe in transparent communication to ensure a smooth collaboration and clear understanding of project goals. 4. Punctuality: I value your time and will always strive to be punctual in my deliverables and communication. 5. Diversity: I embrace diversity and bring a fresh perspective to every project, enabling innovative solutions. Let's connect and work together to build something great! Feel free to reach out to discuss your project requirements and how I can contribute to its success. Looking forward to collaborating with you. -- Best regards, Parry
    Featured Skill Ethereum
    Blockchain
    Forex Trading
    React Native
    Blockchain Development
    Block Creation
    Solidity
    ASP.NET MVC
    Node.js
    Smart Contract
    Hyperledger Fabric
    Blockchain Architecture
    MySQL
  • $80 hourly
    • 5.0/5
    • (23 jobs)
    Hey there! My name is Choi and Iโ€™m an Atlanta, USA-based full-stack developer and designer focused on building top-notch custom, responsive, and mobile-friendly sites, software, and applications. Iโ€™ve worked with clients like Red Bull, MoviePass, Unreal, Wolfgang Puck, Nobu, Ponix, Bonobos, and TB12 to deliver top-tier websites and I can help you do the same! All of my work includes the integration of search engine optimization (SEO) and conversion rate optimization (CRO). The types of clients I chose to work with are serious about results, organized, know what they want, and are open to suggestions and trust in expertise. Hereโ€™s what my site build-out process typically looks like: 1) Discovery - Deep dive into your organization and goals. 2) Design - Create wireframe mockups, review with clients, and annotate real-time changes. I provide up to three design rounds/iterations. 3) Development - Once approved, I develop the design into functional code utilizing a CMS. 4) QA - Test the website for responsiveness and functionalities on all popular browsers and devices. 5) Launch - We are live! Clients then go through a training session on how to manage the website and I hand the keys to the site over. The types of work I usually help my clients with include: - WordPress and Webflow Website & Landing Page Development, Design & Redesign - Software Development - Web & Mobile App Development - Web3 Site Development & Deployment - Smart Contracts - 3D Interior Design Renderings - Architect & CAD Renderings The platforms and frameworks I commonly work with include: - CMS - WordPress, Shopify & WooCommerce - Polygon & Ethereum Main Net - Flutter, Django, Angular, iQuery Mobile & ReactNative Development Languages I have expertise in: - HTML, HTML5, CSS, PHP, React, SQL, Python, Java, Node, Solidity, and more. Software I use for 3D modeling include: SketchUp, AutoCAD, Blender, MAYA, and Photoshop. Looking forward to learning about your project so that we can bring it to life together! Send me an invite on Upwork to get the process started. Talk soon! Choi
    Featured Skill Ethereum
    NFT Marketplace
    Blockchain Architecture
    Blockchain Development Framework
    Blockchain
    Corporate Branding
    Mobile App Development
    Web Application Development
    Mobile App
    Java
    React
    WordPress
    Elementor
    Smart Contract
    WordPress Development
    Blockchain Development
    Web Design
    Cryptocurrency
    Website Redesign
  • $30 hourly
    • 4.9/5
    • (85 jobs)
    Hello! Thanks for visiting my profile. I am a software developer who has 7+ years of experience. As a full-stack engineer with transferable skills and close attention to detail, I am able to handle projects from start to finish with minimal supervision because I have an excellent general sense of what a product should and shouldn't do. - front-end development: React/Angular/Vue, Html/CSS, Scss, Less, various CSS theme - mobile app development: React-Native/Expo/Build fire - webrtc: Jitsi/Janus/zoom - back-end development: PHP/Node/Ruby on Rails - MVC, cms: Laravel, Zend, WordPress, Woocommerce, Shopify - static site generation: Jekyll/Hugo/Gatsby/Gridsome/Hexo/Middleman - database development: MySQL, Postgres, MongoDB, SQLite, Oracle - product management, hosting: Git, Gitlab, Bitbucket, AWS, Heroku, Firebase - Blockchain: Ethereum, Stellar, Smart Contact, Dapp, ICO website Always open to learning new tech! Let's make great things based on ideas together. Looking forward good and long engagement. Thank you
    Featured Skill Ethereum
    Hugo
    Jekyll
    Gatsby.js
    Vue.js
    React Native
    PHP
    Node.js
    HTML5
    JavaScript
    TypeScript
    React
  • $19 hourly
    • 5.0/5
    • (3 jobs)
    As a Senior Blockchain Engineer with extensive hands-on experience in Solidity, Rust, and Ride, I specialize in building secure, scalable, and innovative blockchain applications across major networks like Ethereum, Solana, Polygon, Binance Smart Chain, and Waves. Over the past several years, Iโ€™ve successfully delivered end-to-end blockchain solutions including: โœ… Smart Contracts โœ… Custom Tokens & Crowdsales โœ… NFT Marketplaces & Utilities โœ… DEX/DeFi Protocols & Liquidity Pools โœ… Full-stack dApps โœ… Wallet Integrations (Custodial/Non-custodial) โœ… Blockchain Consulting & Audits ๐Ÿ”ง Core Technical Expertise: ๐Ÿง  Blockchain Development: โœ…Solidity, Rust, Ride (Waves) โœ… EVM-compatible and Non-EVM chains โœ… DeFi protocols, staking systems, DAO implementations โœ… NFT minting, metadata, royalties, and marketplaces โœ… Wallet, exchange, and bridge integrations โœ… Hyperledger & Private Blockchains โœ… Crowdsales, ICO/IDO Platforms ๐Ÿ’ป Smart Contract & DApp Expertise: โœ… Secure smart contract design and audit โœ… Frontend: React.js, Angular, Web3.js, Ethers.js โœ… Backend: Node.js, PHP (Laravel/Yii2/CakePHP) โœ… API integration: CoinPayments, MetaMask, Stripe, PayPal ๐Ÿ“ฆ Infrastructure & DevOps: โœ… AWS, Ubuntu/Linux โœ… Redis, MongoDB, PostgreSQL, MySQL โœ… CI/CD, Docker, Git ๐ŸŽฏ What You Can Expect: โœ… Clean, maintainable code with best practices โœ… Security-focused development (reentrancy, overflow protection, etc.) โœ… Agile communication and reliable delivery โœ… Scalable architecture with ongoing support & upgrades
    Featured Skill Ethereum
    NFT Character
    Blockchain
    Bitcoin
    Python
    NFT Marketplace
    Solidity
    NFT
    Blockchain Architecture
  • $20 hourly
    • 4.8/5
    • (50 jobs)
    I am an experienced Full Stack Blockchain Developer. Some of my other skill sets include Full Stack Web Development with MERN Stack and Django. I am also proficient with Mongodb, Postgresql ,and I have some experience using CI/CD Tools like docker and k8s. I have experience in: โœ… Building Web3 DApps on top of Ethereum and other EVM Blockchains โœ… Writing Smart Contracts in Solidity โœ… Writing from the Front-End with web3 to interact with them โœ… Deploying and developing multiple contracts on Ethereum and EVM chains Feel free to check out my portfolio to know more about my work: haidaralimasu.com Send me a message and letโ€™s discuss your Blockchain Development needs. Haidar Ali.
    Featured Skill Ethereum
    NFT Minting
    NFT Metadata
    Smart Contract
    Solidity
    Truffle
  • $60 hourly
    • 5.0/5
    • (41 jobs)
    I have 1.5+ year of professional Software Development experience in startups as well as established Software Companies. I've spent considerable amount of time designing projects from scratch, solving complex problems, rapid iterative prototyping and implementing changes. I have been working with Solidity and Blockchain projects for more than a year now. I have considerable experience in the following: - Token Launches (ERC20 - Mintable - Burnable - Reflections - TxFee) - Presale / IDO / ICO for tokens via ETH/ERC20 NFTs - ERC721 / ERC1155 - Standard NFTs with Whitelist/Royalties - Presale / Public Sale - Dutch Auctions - IPFS Hosting - Dynamic NFTs (via ChainLink) All my contracts feature the following: - Latest Solidity Version - Latest contract design standards - Large number of tests to check all code - Making sure security practices are followed - Initial Testnet deployment for testing by the client - Contract verification on Etherscan (or corresponding block explorer) I have worked with the following blockchains - Ethereum - Binance Smart Chain (BSC) - Polygon (or Matic) - Tron - Harmony About my Backend Development Experience: I have single handedly managed the entire backend in the startup I worked for and have quite some experience working on NodeJS/MySQL/MongoDB tech stack.
    Featured Skill Ethereum
    Distributed Ledger Technology
    Bitcoin
    Java
    Blockchain
    Solidity
    JavaScript
    Spring MVC
    Node.js
    MySQL
    MongoDB
  • $60 hourly
    • 5.0/5
    • (29 jobs)
    ๐Ÿ‘‹ Hello there! I am an expert Full Stack Developer with over 10 years of experience, specializing in Python and AI/ML. My passion lies in leveraging cutting-edge technologies to create innovative and intelligent solutions. ๐Ÿ”ง Technical Proficiencies: Programming Languages: Python, JavaScript, Node.js, React.js, PHP AI/ML Expertise: Developing and deploying machine learning models, natural language processing, and data analysis Databases: SQL, MongoDB, Firebase Cloud Platforms: AWS, GCP, Azure ๐Ÿš€ Key Commitments: Crafting clean, efficient, and maintainable code. Implementing state-of-the-art AI/ML algorithms and techniques. Collaborating effectively with clients to understand their needs. Delivering solutions on time and to the client's satisfaction. ๐Ÿง  As a lifelong learner, I stay updated with advancements in technology and industry best practices. My focus on Python and AI/ML allows me to tackle complex problems and deliver intelligent, data-driven solutions. If you are looking for a reliable, skilled, and proactive professional to deliver high-quality work and innovative AI/ML solutions, feel free to contact me. Let's discuss how I can help bring your project to life! ๐ŸŒŸ Let's build something amazing together! ๐ŸŒŸ
    Featured Skill Ethereum
    API
    Database
    Large Language Model
    Solidity
    Emerging Tech Consultation
    Blockchain Development
    Next.js
    PostgreSQL
    JavaScript
    Golang
    Python
    Node.js
    React
    AI Development
    LangChain
  • $30 hourly
    • 4.5/5
    • (142 jobs)
    With 8 years in IT engineering, I'm your go-to person for Blockchain, Web3, Backend work, Python, and Server setup. I'm all about the details, thriving on solving tricky problems with creative solutions. Why choose me? I'll build your custom apps just the way you want, and I'll make sure it's all done on time and hassle-free! *Successful Projects: $18M in ERC-20 token market cap, $10M funding raised in a blockchain project, and $1M in NFTs* I've been part of some cool projects: - MBD Financials: Helped launch the NFT Marketplace - Omni Mosquitoes NFT: Helped them with multichain NFT Collection - CryptBartex: Helped them to develop a complete solution for Digital Assets Swap Here's what I bring to the table: Languages: - JavaScript (ReactJS, NextJS, NodeJS) - Python - Solidity Databases: - MongoDB - PostgreSQL - MySQL Blockchain Skills: - Blockchain Protocols - Copy trading tricks - DEFI - Ethereum Dapps - Ethereum Smart Contracts - Ethereum NFTs and Tokens - Telegram Crypto Bots - Telegram Mini Apps - NFT Marketplace - Staking Dapp - Token Launchpad and Token Crosschain Bridge - Escrows - Smart Contracts - Smart Contract Audit - Exchange development (CEX) - Decentralized exchange work (DEX) - ICO/IDO - Wallets - TradingView configuration - Metaverse - GameFi Blockchain Development Tools: OpenZeppelin Truffle - MetaMask - Wallet Connect - Ganache - Remix IDE - Geth - Web3py - Web3.js - Ethers.js - Infura - Brownie - Alchemy Blockchain Platforms: - Bitcoin - Ethereum - Binance Smart Chain (BNB) - Avalanche (AVAX) - Polygon (MATIC) - Uniswap (UNI) - TRON (TRX) - Decentraland (MANA) - PancakeSwap (CAKE) Ready to bring my experience and knack for problem-solving to your projects. Let's make tech work for you!
    Featured Skill Ethereum
    Smart Contract
    web3.js
    Ethers.js
    Web3
    Blockchain, NFT & Cryptocurrency
    Blockchain
    Solidity
    NFT Marketplace
    Smart Contract Development
    DApps
    Blockchain Development
    Cryptocurrency
    Python
    Django
  • $100 hourly
    • 4.9/5
    • (122 jobs)
    ๐“๐จ๐ฉ ๐Ÿ% ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง ๐„๐ง๐ ๐ข๐ง๐ž๐ž๐ซ | ๐“๐ซ๐š๐ง๐ฌ๐Ÿ๐จ๐ซ๐ฆ๐ข๐ง๐  ๐ˆ๐๐ž๐š๐ฌ ๐ข๐ง๐ญ๐จ ๐‘๐จ๐›๐ฎ๐ฌ๐ญ, ๐’๐œ๐š๐ฅ๐š๐›๐ฅ๐ž ๐’๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง๐ฌ With over a decade of hands-on experience in blockchain development, I bring both the technical expertise and strategic insight to bring your project to life. As an Upwork expert-vetted engineer, Iโ€™ve partnered with clients to launch secure, scalable, and innovative blockchain applications across multiple ecosystems. ๐–๐ก๐ฒ ๐–๐จ๐ซ๐ค ๐–๐ข๐ญ๐ก ๐Œ๐ž? โ€ข ๐„๐ง๐-๐ญ๐จ-๐„๐ง๐ ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง ๐„๐ฑ๐ฉ๐ž๐ซ๐ญ๐ข๐ฌ๐ž: Iโ€™m skilled in every layer of blockchain development, from designing smart contracts and DeFi protocols to launching complete dApps across EVM, Solana, Polkadot, and more. โ€ข ๐’๐ญ๐ซ๐š๐ญ๐ž๐ ๐ข๐œ ๐…๐จ๐œ๐ฎ๐ฌ ๐จ๐ง ๐†๐ซ๐จ๐ฐ๐ญ๐ก: Every project I take on is designed not just to work, but to drive growth, security, and user engagement. With a unique blend of technical and business insight, I deliver blockchain solutions that meet and exceed real-world demands. โ€ข ๐๐ซ๐จ๐ฏ๐ž๐ง ๐’๐ฎ๐œ๐œ๐ž๐ฌ๐ฌ ๐‘๐ž๐œ๐จ๐ซ๐: Iโ€™ve led numerous projects from ideation to launch, consistently achieving client objectives and ensuring scalability for future growth. ๐“๐ž๐œ๐ก๐ง๐ข๐œ๐š๐ฅ ๐’๐ค๐ข๐ฅ๐ฅ๐ฌ & ๐’๐ฉ๐ž๐œ๐ข๐š๐ฅ๐ญ๐ข๐ž๐ฌ ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง & ๐’๐ฆ๐š๐ซ๐ญ ๐‚๐จ๐ง๐ญ๐ซ๐š๐œ๐ญ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ โ€ข ๐„๐ญ๐ก๐ž๐ซ๐ž๐ฎ๐ฆ ๐„๐œ๐จ๐ฌ๐ฒ๐ฌ๐ญ๐ž๐ฆ: Solidity, Vyper, ERC standards (ERC20, ERC721, ERC1155) โ€ข ๐’๐จ๐ฅ๐š๐ง๐š ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ: Rust, Anchor Framework โ€ข ๐๐จ๐ฅ๐ค๐š๐๐จ๐ญ & ๐๐ž๐š๐ซ ๐๐ซ๐จ๐ญ๐จ๐œ๐จ๐ฅ: Rust, Ink! โ€ข ๐‚๐š๐ซ๐๐š๐ง๐จ: Plutus (Haskell), Marlowe โ€ข ๐‡๐ฒ๐ฉ๐ž๐ซ๐ฅ๐ž๐๐ ๐ž๐ซ (๐๐ž๐ซ๐ฆ๐ข๐ฌ๐ฌ๐ข๐จ๐ง๐ž๐ ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง): Go, JavaScript ๐…๐ฎ๐ฅ๐ฅ-๐’๐ญ๐š๐œ๐ค ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ โ€ข ๐…๐ซ๐จ๐ง๐ญ๐ž๐ง๐: JavaScript, TypeScript, React, Next.js, Vue.js, TailwindCSS, Bootstrap โ€ข ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง ๐‹๐ข๐›๐ซ๐š๐ซ๐ข๐ž๐ฌ: Web3.js, Ethers.js, Solana Web3.js โ€ข ๐๐š๐œ๐ค๐ž๐ง๐ & ๐€๐๐ˆ: Node.js, Python, Go, Rust, C++, GraphQL, Express.js, Flask ๐Œ๐จ๐›๐ข๐ฅ๐ž & ๐ƒ๐š๐ญ๐š๐›๐š๐ฌ๐ž ๐’๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง๐ฌ โ€ข ๐Œ๐จ๐›๐ข๐ฅ๐ž: Kotlin/Java (Android), Swift (iOS), React Native โ€ข ๐ƒ๐š๐ญ๐š๐›๐š๐ฌ๐ž๐ฌ & ๐’๐ญ๐จ๐ซ๐š๐ ๐ž: PostgreSQL, MySQL, MongoDB, Prisma, IPFS ๐ˆ๐ง๐๐ฎ๐ฌ๐ญ๐ซ๐ข๐ž๐ฌ ๐’๐ž๐ซ๐ฏ๐ž๐ From DeFi and NFTs to enterprise solutions, I work across various industries, customizing each project to meet specific client needs and industry demands. Letโ€™s discuss how we can leverage blockchain to make your vision a powerful reality. Whether itโ€™s a new dApp, DeFi protocol, or enterprise-grade solution, Iโ€™m here to bring your ideas to life with technical excellence and strategic foresight.
    Featured Skill Ethereum
    Solana
    Front-End Development
    Next.js
    API Development
    Solidity
    Blockchain
    Web Development
    Rust
    Cryptocurrency
    Smart Contract
    Blockchain, NFT & Cryptocurrency
    DApps
    Blockchain Development
    React
  • $50 hourly
    • 5.0/5
    • (105 jobs)
    Over the last 12 years, I have evolved into a trusted ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ž๐ซ, ๐“๐ซ๐š๐๐ข๐ง๐  ๐›๐จ๐ญ & ๐–๐ž๐› ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง ๐ฌ๐ฉ๐ž๐œ๐ข๐š๐ฅ๐ข๐ฌ๐ญ, completing over 200 high-quality projects. I started as an Automation Engineer and expanded into Trading bot and Smart Contract development, & worked very closely with DeFi protocols, NFT platforms, and robotic trading systems. With my experience, I have learned that gas-optimized contracts and precise automation logic are essential for scalable, cost-effective solutions. Today, I lead a strong team of 40 professionals in Blockchain, AI, FinTech, and automation. My expertise spans smart contract development for Ethereum, BSC, Polygon, Solana (using Solidity and Rust), decentralized exchange systems, and AI-powered trading bots for both DEX and CEX. Additionally, I build robust web automation systems, using tools like Selenium, Puppeteer, API integrations, and RPA to handle data extraction, workflow optimization, and task automation. And when I am off the time, youโ€™ll find me cradling my guitar, pouring my soul into each chord. ๐€๐ซ๐ž๐š๐ฌ ๐จ๐Ÿ ๐„๐ฑ๐ฉ๐ž๐ซ๐ญ๐ข๐ฌ๐ž โ— ๐’๐ฆ๐š๐ซ๐ญ ๐‚๐จ๐ง๐ญ๐ซ๐š๐œ๐ญ & ๐’๐จ๐ฅ๐ข๐๐ข๐ญ๐ฒ/๐‘๐ฎ๐ฌ๐ญ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ (Ethereum, BSC, Polygon, Avalanche, Solana) โ— ๐ƒ๐ž๐…๐ข & ๐ƒ๐€๐Ž ๐€๐ซ๐œ๐ก๐ข๐ญ๐ž๐œ๐ญ๐ฎ๐ซ๐ž: Staking, yield farming, liquidity pools, tokenomics โ— ๐๐…๐“ ๐๐ฅ๐š๐ญ๐Ÿ๐จ๐ซ๐ฆ๐ฌ & ๐๐€๐ฉ๐ฉ๐ฌ: Minting, marketplaces, whitelists โ— ๐ƒ๐„๐—/๐‚๐„๐— & ๐–๐š๐ฅ๐ฅ๐ž๐ญ ๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง: Secure exchange systems and multi-chain wallets โ— ๐“๐ซ๐š๐๐ข๐ง๐  ๐๐จ๐ญ๐ฌ & ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง: High-frequency bots, arbitrage, sniping, mempool monitoring, MT4/MT5 bots, AI-enabled trading ๐–๐ž๐› ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง & ๐๐ซ๐จ๐œ๐ž๐ฌ๐ฌ ๐๐จ๐ญ๐ฌ: Data scraping, browser automation, API pipelines, RPA workflows ๐’๐ž๐ซ๐ฏ๐ข๐œ๐ž๐ฌ ๐ˆ ๐๐ซ๐จ๐ฏ๐ข๐๐ž โ— ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง & ๐’๐ฆ๐š๐ซ๐ญ ๐‚๐จ๐ง๐ญ๐ซ๐š๐œ๐ญ๐ฌ: Custom contracts, audits, token launches (ERCโ€‘20/721/1155) โ— ๐ƒ๐ž๐…๐ข & ๐๐…๐“ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ: Full-stack solutions for decentralized platforms โ— ๐‚๐ฎ๐ฌ๐ญ๐จ๐ฆ ๐“๐ซ๐š๐๐ข๐ง๐  ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง / ๐“๐ซ๐š๐๐ข๐ง๐  ๐›๐จ๐ญ ๐๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ: Bots for HFT, arbitrage, sniping, front running, market-making, and AI-enabled trade strategies โ— ๐–๐ž๐› ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง & ๐’๐œ๐ซ๐ข๐ฉ๐ญ๐ข๐ง๐ : Tailored solutions for scraping, workflow automation, RPA, and scheduling โ— ๐…๐ฎ๐ฅ๐ฅ ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง ๐„๐œ๐จ๐ฌ๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ: From backend services to frontend Web UIs and chatbots ๐“๐ž๐œ๐ก ๐’๐ญ๐š๐œ๐ค โ— ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง & ๐“๐ซ๐š๐๐ข๐ง๐  ๐๐จ๐ญ๐ฌ: Solidity, Rust, Web3.js, Web3.py, Truffle, Hardhat โ— ๐“๐ซ๐š๐๐ข๐ง๐  ๐๐จ๐ญ๐ฌ: Python, Node.js, Solidity, Rust, Web3.js, Web3.py, Truffle, Hardhat, MT4/MT5 api, uniswap v2 library, uniswap v3 library, โ— ๐–๐ž๐› ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง: Selenium, Puppeteer, BeautifulSoup, Scrapy, REST/SOAP APIs, RPA frameworks โ— ๐“๐จ๐จ๐ฅ๐ฌ & ๐‹๐ข๐›๐ซ๐š๐ซ๐ข๐ž๐ฌ: Smart contract audit tools, wallets (MetaMask, Ethers.js), data pipelines ๐๐ž๐ฑ๐ญ ๐’๐ญ๐ž๐ฉ๐ฌ Ready to build your Web3 or automation project with confidence? Whether it's launching a DeFi protocol, deploying a DEX, creating AI-powered trading bots, or automating business workflows, I'm here to deliver robust and scalable solutions. ๐‚๐จ๐ง๐ญ๐š๐œ๐ญ ๐ฆ๐ž ๐ญ๐จ๐๐š๐ฒ to get started. Your next-gen blockchain and automation system awaits
    Featured Skill Ethereum
    Python
    Forex Trading
    Scripting
    Bot Development
    Automation
    AI Bot
    JavaScript
    Rust
    Smart Contract
    Blockchain Development
    API
    Blockchain
    Cryptocurrency
    Full-Stack Development
  • $20 hourly
    • 4.8/5
    • (85 jobs)
    Hi there, I am a professional senior developer and have been running a Digital Transformation & Product Engineering company for over 10+ years. we serve over 100 clients globally and have successfully completed more than 81 projects across various industries. *๏ธโƒฃ๐–๐ก๐š๐ญ ๐–๐ž ๐Ž๐Ÿ๐Ÿ๐ž๐ซ: End-to-End App Development Solutions Specialized Teams for Each Technology Stack Subscription Services and Loyalty Point System Features *๏ธโƒฃ๐Ž๐ฎ๐ซ ๐„๐ฑ๐ฉ๐ž๐ซ๐ญ๐ข๐ฌ๐ž: Mobile App Development: Flutter, React Native, iOS (Swift, SwiftUI), Android (Kotlin) Web Development: MERN Stack (MongoDB, Express.js, React, Node.js), PHP, VueJS, Laravel, Angular, HTML/CSS Cross-Platform Development: Ionic Cloud Services: AWS, Google Cloud, Firebase (Authentication, Analytics, API Development, Cloud Functions, Serverless Computing) *๏ธโƒฃ๐Š๐ž๐ฒ ๐‡๐ข๐ ๐ก๐ฅ๐ข๐ ๐ก๐ญ๐ฌ: Over 100 global clients More than 81 successfully completed projects Skilled and knowledgeable developers in their respective domains Focus on scalable, secure, and high-quality solutions *๏ธโƒฃ๐‘๐ž๐œ๐ž๐ง๐ญ ๐๐ซ๐จ๐ฃ๐ž๐œ๐ญ๐ฌ: Contents.com: A web portal for content generation, secured million-dollar funding Tripster: Travel-cum-social networking app LookLad: E-commerce portal for local businesses Funyub: A comprehensive camp information website in the USA ScoreYourRun: A social network for cricket enthusiasts Fast2sms: Bulk SMS service provider ๐“๐ซ๐š๐ง๐ฌ๐Ÿ๐จ๐ซ๐ฆ ๐˜๐จ๐ฎ๐ซ ๐•๐ข๐ฌ๐ข๐จ๐ง ๐ข๐ง๐ญ๐จ ๐š ๐’๐ญ๐ฎ๐ง๐ง๐ข๐ง๐  ๐€๐ฉ๐ฉ โ€“ ๐†๐ž๐ญ ๐’๐ญ๐š๐ซ๐ญ๐ž๐ ๐๐จ๐ฐ! Looking forward to discussing your project in detail.
    Featured Skill Ethereum
    Internet of Things
    Cryptocurrency
    Smart Contract
    Blockchain
    PHP
    Mobile App Development
    Node.js
    React
    Agent GPT
    AI Chatbot
    ChatGPT API Integration
    AI Development
    AI Bot
    AI Agent Development
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