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  • $35 hourly
    Hi there! If you are visiting my page, then you are definitely in the right place for a high-paced software developer, and tech lead to deliver your project. I am an experienced Solidity, Web3, and Python Developer with an overall experience of 3+ years. I specialize in writing smart contracts, Python Scripting, and Full-Stack Development. To date, I have delivered over multiple large-scale projects to my clients in and outside of Upwork. Some of the blockchain projects I have worked on have made over $300K+ in total revenue during launch. You can check my portfolio here: manishgotame.com.np In the field of Blockchain, I have experience in: - Chains: Ethereum, Binance Smart chain, Solana, Polygon, etc. - Writing gas-efficient smart contracts in Solidity. - ERC721 / ERC20 / ERC1155 token standard contract. - NFTs, Staking, DAO, AMM, etc. - Proper Contract testing using Hardhat. - Web3 Integration with 15+ wallet connections in React.js, functional on both mobile and web. Python / Django: - Full-stack development using Django in the backend, React in the frontend. - Have worked on multiple large-scale web applications in the field of data extraction, and scraping. - I have built custom OCR libraries and data extraction tools. - AI models using Keras, and Pytorch integration within your web application. My strong sides are responsibility, attention to clients' needs, and a strong will to achieve the final results of team efforts. It's enough comfortable for me to work both in a team and in stand-alone development. Send me a message and let's start hammering out the details of your project.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Solidity
    PDF Conversion
    Django
    Scripting
    web3.js
    Smart Contract
    React
    HTML5
    Blockchain
    CSS
    jQuery
    JavaScript
    Python
    Data Extraction
  • $80 hourly
    ✅ Top Rated ✅ 5 Stars feedbacks ✅ 10 Years experience in development I'm from Latvia! Skilled with both front-end and back-end with an eye for innovative and exclusive designs. I've got experience in Solidity and Blockchain fundamentals, I can help You out with most of the crypto-related tasks, setting up blockchain explorer, generating your own currency or writing smart-contracts on Ethereum Network for Decentralized Exchange I also specialize in HTML, CSS, Javascript, jQuery, Bootstrap, PHP, Node.Js, React, Angular, MongoDb, WordPress, Shopify, Braintree, and a whole host of other technologies, platforms, and libraries. Whatever your needs are, I will find a solution that fits it. I can be a complete solution to most of the web-related tasks from simple HTML pages and Photoshop edits to complex E-commerce frameworks and database management activities. My passion is design and art, which is also reflected on art of writing code and solving IT problems. Fast learner and adaptable to different project environments. Team player, but can also work solo. 🤘🌟👨‍💻
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Web Design
    Blockchain
    Unit Testing
    Smart Contract
    Blockchain Development
    Solidity
    Cryptocurrency
    web3.js
    Web Development
    Angular
    React
    JavaScript
  • $250 hourly
    Hi! I am a senior full-stack software engineer, researcher, and blockchain developer, with 6+ years of experience in professional development and freelancing—primary expertise in Solidity, Python, C#, .NET, Typescript. I have a BSc in Computer Science, an MSc in Financial Computing, and I'm currently pursuing a Ph.D. in Financial Machine Learning. I am a Teaching Assistant at University Politehnica Bucharest, teaching Intro to C Programming, Logic Circuit Design, Intro to Linux / Operating Systems. Skills: - frontend development - Javascript/Typescript, PHP, HTML5, CSS3, LESS/SASS, React, React Redux, Angular, Vue.js, Knockout.js, Bootstrap, Bulma - backend development - Node.js, express, C#/.NET, Java Spring Boot - database engines: MySQL, MSSQL, Postgres, Neo4j - software programming - Python, Java, C/C++, C# - blockchain - Solidity (Ethereum), contract auditing, blockchain research, smart contract development - machine learning - Python, PyTorch, Tensorflow - web botting & data scraping - C#, MS Interop, Python bots, Phantom.js, Selenium - automated testing & CI/CD: Jenkins, Mocha, Jest, Chai, Python unit testing, Cucumber, SpecFlow - IaaS: Azure, AWS, Terraform - workflow - extreme programming (XP), agile development, test-driven development
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Smart Contract
    DApps
    React
    Automated Testing
    Web Design
    C#
    Blockchain
    Solidity
    JavaScript
    Machine Learning
    Python
  • $20 hourly
    🏅𝐍𝐎𝐓 𝐉𝐔𝐒𝐓 𝐀 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐄𝐑; 𝐘𝐎𝐔𝐑 𝐄𝐗𝐏𝐄𝐑𝐓 𝐁𝐋𝐎𝐂𝐊𝐂𝐇𝐀𝐈𝐍 𝐏𝐀𝐑𝐓𝐍𝐄𝐑🏅 I have been architecting the future, brick by digital brick, for nearly a decade. We're an ISO-certified powerhouse with expert developers in India and UAE, crafting solutions that span the web, mobile, and the revolutionary blockchain world. 🌐𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞?🌐 100% Job Success Score, +1800 Hours Expertise, Top Rated Plus – The track record speaks for itself. ISO Certified Excellence: Proudly holding ISO 9001-2015, ISO 27001-2013, and ISO/IEC 27701:2019 certifications. Free Consulting: Discuss your project and share your dreams – I'll suggest the perfect technology stack and pave the path to success. -: 𝐂𝐎𝐑𝐄 𝐀𝐑𝐄𝐀𝐒 𝐎𝐅 𝐄𝐗𝐏𝐄𝐑𝐓𝐈𝐒𝐄:- ✅Smart Contract Creation {​​​​​​​​​​​​​​​​​Tokens | NFTs | DAOs | Flash Loan | Arbitrage | and more... }​​​​​​​​​​​​​​​​​ ✅NFT Marketplace Development ✅Smart Contract Auditing ✅Decentralized Applications (dApps) ✅EVMs {​​​​​​​​​​​​​​​​​ Solidity } ✅Hyperledger Fabric & Hyperledger Besu ✅Decentralize Wallet ✅DEX with order book platforms like PancakeSwap and Uniswap. ✅Forking: Bitcoin, Litecoin, Dash, PIVX, Firo. Custom blockchain creation and modification. ✅Cross-Chain Solutions ✅Tokenization on Various Platforms: ETH, BSC, Tron, Polygon, Arbitrum, Solana. ✅Custom token development for diverse needs. ✅Forking {Bitcoin, Litecoin, Dash, PIVX, Firo. Custom blockchain creation and modification} ✅Explorer {Iquidus, Bulwark, Hyperledger Explorer, Blockscout, Blockbook} ✅Web3.js 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: ✅HTML | CSS | JavaScript | Bootstrap | NextJs| NodeJs ✅Web3 JS | React JS | Typescript ✅Database {​​​​​​​​​​​​​​​​​ MySQL | PostgreSQL | MongoDB | CouchDB | and more... }​​​​​​​​​​​​​​​​​ 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: ✅Android/ iOS {​​​​​​​​​​​​​​​​​ Java | Dart | Firebase | Hive}​​​​​​​​​​​​​​​​​ ✅Cross-Platform Compatibility ✅Flutter Frameworks 𝐎𝐭𝐡𝐞𝐫: ✅AI Development (OpenAI, Integration, Custom Model Creation) ✅Custom Bot Development ✅Technical & Whitepaper Creation ✅Tokenomics Consulting ✅Blockchain Consulting ✅Ongoing Maintenance/Support Ready to build your future on blockchain and beyond? Let's talk. P.S. Remember to check out the portfolio and client testimonials!
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Hyperledger Fabric
    Next.js
    PIVX
    Smart Contract
    Blockchain
    Cryptocurrency
    Solidity
    Blockchain Development
    Binance Coin
    Bitcoin
    React
    Mobile App Development
    Flutter
    Smartphone
  • $50 hourly
    Hi! I'm a Full Stack Blockchain and a Subgraph (TheGraph) developer. I've more than two years of experience in writing smart contracts and building decentralized applications. I graduated from University of Karachi with a Bachelor's degree in Software Engineering in 2020, and have spent the last year working on blockchain based projects. In my journey I have built different types of decentralized applications including DeFi, NFT, Interoperability (bridges), ICO, Staking and E-commerce. Skills : - Solidity Programming - Understanding of Foundry, Hardhat, Truffle ((incl. Unit Testing) - Understanding of MetaMask & other Wallet APIs - React/Next JS/ Typescript - Web3 / Ethers JS - Subgraphs (Indexing protocol for querying networks like Ethereum) I'm looking forward to working with you!
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Web3
    Ethers.js
    Smart Contract Development
    Blockchain, NFT & Cryptocurrency
    React
    DApps
    Web Development
    Blockchain
    Node.js
    web3.js
    Solidity
    Blockchain Development
    JavaScript
    Smart Contract
  • $100 hourly
    I am a C++/C#/Py/Rust/Solidity software architect/developer with 15+ years of experience in development -HFT ultra-low-latency cross-brokers, cross-platform multi-asset algorithmic tools based on QuickFix/Fix8/Onix engines and custom protocols. -BETTING real-time custom pre-match, in-play, play-by-play algorithmic software and historical backtesting-strategies for Betfair,Betdaq. -Financial Ethereum, Polygon, BSC and Solana tools and smart contracts for DeFi ecosystem. Web3 front-running and statistical tools, Defi arbitrage systems.
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    ChatGPT
    API Integration
    Uniswap
    Financial Analysis
    MQL 4
    Financial Modeling
    Forex Trading
    QuickFIX
    Betfair
    Financial Statement Software
    Smart Contract
    web3.js
    Solidity
    Blockchain
  • $185 hourly
    I am a California based NFT smart contract developer/web3-DApp developer/NFT consultant/advisor and have successfully launched over 10 NFT projects for my clients. I have provided consultation for over 20 NFT clients too. I have also worked on my own 10k generative ERC721 NFT art project. I was involved in every aspect of the NFT project from start to finish including contract development, twitter/discord marketing, generating the 10k art illustration, uploading images to IPFS, website design, integrating web3 for website minting, etc. I look forward to hearing from you and learning more about your project! Eugene
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Blockchain
    Front-End Development
    Blockchain Development
    Website
    Web Design
    Cryptocurrency
    DApps
    Smart Contract
    web3.js
    Solidity
    Web Development
    JavaScript
    React
  • $111 hourly
    ✅Frontend: HTML, CSS, JS, TS, React, Vue, Svelte, Web3 ✅Backend: Solidity, Rust, Golang, Python, Node ✅Protocol: Solidity, Anchor, Hardhat, Foundry Software developer that enjoys tackling interesting challenges, designing novel solutions and problem solving.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Rust
    web3.js
    Golang
    Python
    Node.js
    Smart Contract
    Solidity
    React
    Linux
    Digital Marketing
    MQTT
    Vue.js
    DApps
  • $55 hourly
    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 =)
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Web Development
    RESTful Architecture
    Angular
    Android
    Blockchain
    Raspberry Pi
    Django
    React
    Machine Learning
    JavaScript
    TensorFlow
    Python
  • $40 hourly
    𝗘𝘅𝗽𝗲𝗿𝘁 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗥𝗲𝗮𝗰𝘁 & 𝗡𝗼𝗱𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿𝘀 𝗳𝗼𝗿 𝗦𝗲𝗮𝗺𝗹𝗲𝘀𝘀 𝗪𝗲𝗯 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 | 𝗨𝗽𝘄𝗼𝗿𝗸 𝗔𝗴𝗲𝗻𝗰𝘆 Struggling with inexpensive hires and low-quality work for your business or startup? At Alaurux, we understand the challenges of achieving your goals amidst communication barriers, budget overruns, and quality assurance issues. Our team of React & Node developers specialize in delivering top-notch quality, addressing user experience concerns, and ensuring transparent communication to comprehend your business goals and deliver exceptional results. With Alaurux's Web Application Development Lifecycle, experience scalable, flexible, and adaptable solutions tailored to your business needs, ensuring sustainable growth and steadfast positioning in the market. 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗔𝗹𝗮𝘂𝗿𝘂𝘅? Successfully scaled businesses like WanderlustCares to 200k+ active users on monthly subscriptions. Helped clients like Flynnsite in attaining 1 Million+ monthly visitors. 𝗨𝗹𝘁𝗶𝗺𝗮𝘁𝗲 𝗦𝗮𝘁𝗶𝘀𝗳𝗮𝗰𝘁𝗶𝗼𝗻 𝗚𝘂𝗮𝗿𝗮𝗻𝘁𝗲𝗲𝗱: - 7 Days Satisfaction Period - 100% Money-Back Guarantee - 30 Days Free Maintenance Post Launch Alaurux is committed to working closely with you to achieve exceptional results, granting you the freedom, self-worth, and reputable standing your business deserves. Get started with your personalized Web Application Development Strategy and join our community of 50+ satisfied clients today.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    React Native
    Firebase
    Redux
    React
    RESTful API
    ExpressJS
    Blockchain Development
    TypeScript
    Node.js
    web3.js
    Solidity
    JavaScript
  • $150 hourly
    Summary Topnotch IT professional with HUGE experience in different IT areas: - Software development: More than two decades of experience, many large-scale projects, in Golang, C#/.NET, C/C++, Python, MATLAB, JavaScript, etc. - Specialized in performance-must industries where microseconds count, especially trading. I was working for two of the biggest trading companies in the world: "QuantRes" from Bahamas and "Jump Trading". - Blockchain and crypto: Huge experience in crypto-trading software and blockchain intergration. - DevOps: Planning and deploying efficient development workflows and CI/CD pipelines. - Containerization: HUGE experience with Docker and Kubernetes, both AWS managed EKS and on-premise vanilla Kubernetes. - Public cloud: AWS certificated, planning, implementing and managing cost-effective cloud deployments, tailored for specific client's needs. - Private cloud: Ten years of experience in planning, deploying and maintaining virtual infrastructures based on VMware and Hyper-V. - Hybrid cloud: Maintaining complex private+public cloud infrastructures. - System administration: Combined Linux/Windows environments, networking, monitoring, centralized configuration management, etc. Unique combination of experience and knowledge in many different IT areas makes me an ULTIMATE IT PROBLEM SOLVER. I can solve a problem no matter if it's caused by software bug, networking, DB load, firewalls, or simply bad karma. Certificates - Microsoft: MCP, MCAD - AWS Certified Developer - Associate (DVA-C01) - AWS Certified Solutions Architect - Associate (SAA-C01) - Certified Solidity Developer (CSD) - Certified Smart Contract Developer (CSCD) - Certified NFT Developer - Certified Polygon Developer DevOps Skills Besides DevOps skills mentioned above in AWS section, I also need to mention: - GitHub, Bitbucket; - Other Atlassian products (JIRA, Confluence, FishEye, Bitbucket, etc.); - Code quality tools like SonarQube; - Automated build tools like AppVeyor, Jenkins; - And much more. Software Development Skills - Strong software architecture skills. Planned many large-scale projects from scratch (selecting the appropriate architecture, databases, technology, patterns and practices, integrating third-party packages, etc.). - Programming languages: Golang (5 years of experience), C#/.NET (20 years of experience), MCAD in .NET from 2004; C/C++ on different platforms (Windows, Linux, OS X), with different compilers (Visual C++, GCC, Intel, Clang), Qt framework, C++/WinRT, for UWP; Other languages: Python, MATLAB, JavaScript, etc. I can quickly adopt any other language if needed. - Databases: MS SQL Server and PostgreSQL in RDBMS world; Cassandra, ScyllaDB, Elasticsearch and AWS DynamoDB in NoSQL world, KairosDB, OpenTSDB, InfluxDB in time-series DB systems. I can quickly adopt any other database. I'm able to suggest, plan, deploy and utilize the most appropriate DB system based on the client's needs. - Experience in architecting and developing large-scale distributed systems that are running on multiple servers, exchanging hundreds of thousands of messages per second, with real-time processing, with huge ingestion rates (dozens of thousands of data points per second). - Developing for micro-service architecture, Docker and Kubernetes. Also for modern "serverless" environments in the cloud. - Performance-first development for trading and system applications. Solution Architecture Skills Huge experience in software architecture, combined with huge infrastructure engineering experience (public, private, hybrid clouds), makes e a perfect Solution Architect. SysOps Skills - On-Premise virtualization based on VMware and Hyper-V; - System administration in combined (Win/Lin) environments; - Networking (private networks, DMZ, firewalls, routers, VPN connections with remote offices, VLANs, subnets, etc.). - Advanced monitoring with Zabbix and similar tools; - Centralized configuration management with Puppet or Ansible. Blockchain-specific development skills - Solidity smart contracts developer, following security and other best practices. - Using well-known third-party contracts and libraries like OpenZeppelin. - Using off-chain oracles like Chainlink. - Deploying ERC-20 tokens, initial coin offerings (ICO), ERC-721 and ERC-1155 non-fungible tokens (NFT). - Experience with Ethereum and Polygon blockchains, able to adapt to any other. - Unit testing and deployment automation by using tools like Truffle suite and Ganache. I can also adapt to Python tools like `brownie`. - Integrating smart contracts to development / production workflows by using Web3.js. Looking forward to hearing from you!
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Solidity
    Linux System Administration
    C++
    C#
    Cloud Computing
    Apache Cassandra
    .NET Framework
    Golang
    AWS Lambda
  • $50 hourly
    Blockchain developer and defi enthusiast with over 3 years of experience in the field. With all the recent hacks happening, developing a decentralized app is a very risky proposition. You don't want an application handling millions of dollars, getting hacked due to a developer bug. This is where you need me. With a development history of over 20 products which include both DeFi dapps and NFTs, I have the required experience for this job. I would love to gain more experience in this field, by working on new and innovative projects.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Google Chrome Extension
    Algorithm Development
    Node.js
    Golang
    Blockchain
    Cryptocurrency
    Python
    Solidity
  • $60 hourly
    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.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Blockchain
    Mobile App Development
    Android App Development
    iOS Development
    Kotlin
    Java
    Amazon Web Services
    Swift
    Node.js
    Objective-C
  • $50 hourly
    I am a senior full-stack web developer who can easily adapt to any technology required for your projects. I have proven knowledge of the requirements for web applications and try to provide the best solution for each scenario to allow your web product to grow and thrive. I earned a master's degree in Computer Science and Engineering and have since been working for software companies of all sizes from all around the globe as a freelancer. Currently, I enjoy working as a full-stack architect in PHP, JavaScript, Python projects, where my experience and my deep understanding of architecture and theory are most impactful. I am a self-driven and detail-oriented developer, focusing on quality and exceeding expectations of both internal and external clients, along with excellent communication skills and a passion for test-driven development. My skills including such as: - PHP, Codeigniter, Wordpress, Woocommerce, Shopify, Magento1/2 - Javascript, Angular.js, Node.js, Vue.js, React.js, Redux - Python / Django - MySQL, PostgreSQL, MongoDB - HTML5, CSS3, LESS, SASS, Bootstrap 3/4 - JSON, XML, REST API, Google API, AWS, Social APIs
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Vue.js
    DApps
    VYPER Software
    WooCommerce
    React
    Plugin Development
    Truffle
    WordPress
    Blockchain
    Solidity
    JavaScript
    PHP
    Node.js
    web3.js
  • $30 hourly
    🧪4 yrs + Experience 👨‍💻65 + Jobs ✨ 4.85 Rating 🎯40 + Excellent Dapps As a senior blockchain engineer with 4+ years of experience, I've worked on a range of platforms and languages, including Solidity, Rust, and Scilla on creating full-stack Apps. 🛡️ I've developed smart contracts, DApps, and blockchain-based systems for various industries, including complex projects such as Wormhole Cross Bridge, NFT Marketplace, Trading Bot, Arbitrage Bot, and Multi Chain Architecture. 🤝 With excellent communication and collaboration skills, I deliver high-quality results on time and within budget. As a senior blockchain developer, I can help drive meaningful results for your organization through the use of blockchain technology. 🏆 Let me bring my skills and experience to your project and help drive success as a senior blockchain developer on Upwork.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    React
    Bot Development
    Cryptocurrency
    Blockchain
    Solana
    Emerging Tech Consultation
    web3.js
    Blockchain Architecture
    Solidity
    NFT Minting
    DApp Development
    Node.js
    Smart Contract
    Cryptography
  • $100 hourly
    *****Open to serious, timely, & responsive offers only***** I am a crypto token developer. I write Solidity smart contracts to create tokens or meme coins, on various blockchains including: Solana, Ethereum, Binance Smart Chain, Polygon, or Avalanche. SERVICES -Smart Contract Creation for tokens/meme coins -Tokenomics -Consulting on launch process, platforms, presales, DEX’s, CEX’s, launchpads, token burns, wallets, marketing, callers/KOL’s, liquidity pools, and more If you have questions, please message me and I'll be happy to answer them for you.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Tokenomics
    Launchpad
    Initial Coin Offering
    Avalanche
    Blockchain
    Remix
    Binance Coin
    Cryptocurrency
    Solidity
  • $60 hourly
    github.com/SimRunBot Technologies I use: * Nextjs, React * Tailwind * Vercel * Stripe * Typescript/Javascript * Git
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    SaaS Development
    Web Development
    ChatGPT
    Stable Diffusion
    React
    NFT Minting
    Smart Contract
    Solidity
    Blockchain
    TypeScript
    JavaScript
  • $45 hourly
    As a CTO with over 10 years of experience in web app development, I have a proven track record of success in delivering high-quality, scalable, and secure web solutions. I am an expert 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. 📍 Expertise in blockchain development and Web3 technologies 📍 Strong understanding of the full-stack development process 📍 Experience in building and deploying scalable and secure blockchain applications 📍 Proven track record of success in delivering high-quality blockchain projects on time and within budget 📍 Excellent communication and interpersonal skills Let's hop on a call and discuss how I can make your project happen.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    AI Chatbot
    Blockchain, NFT & Cryptocurrency
    Cryptocurrency
    React
    Ethers.js
    Web3
    DeFi
    Blockchain
    Smart Contract Development
    Solana
    Solidity
    Node.js
    Smart Contract
    web3.js
  • $150 hourly
    Experienced and professional developer. Specialist in Ethereum smart contracts. Experience working with Defi protocols, NFTS and tokens. Experience working across the full stack in large web3 projects and applications. Highly skilled in creating bespoke solana programs in rust. Known for delivering clean quality code that is both tested and robust. Fluent languages: Solidity, Python, C++, Rust, Elixir, Typescript, JavaScript
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Elixir
    Django
    Blockchain
    Solana
    Solidity
    Python
    Node.js
    Rust
    C++
    web3.js
  • $75 hourly
    I have done 50+ successful crypto projects with over $100M+ on-chain verifiable value. My name is Karim, and I am a blockchain developer based in the Netherlands. Some of my achievements include: ☆ Multiple ERC-20 and Solana tokens hitting market caps of $100m+ ☆ NFT projects raising over $25m with their own custom launches ☆ Custom dapps and games including ERC-20 and ERC-721 staking, NFT breeding, NFT yield systems, custom casino games ☆ Forks of popular DEFI projects such as 1Inch, Velodrome, friends dot tech and more. ☆ Custom DEFI projects like token launchpads, ERC-1155 staking platforms, complex NFT and token staking solutions and more ☆ Mobile wallet applications using biometrics, QR codes, multi-party computation (MPC) and other advanced key management solutions. Whether it's trying to launch a token or NFT, raise funds through a presale, creating an MEV trading bot or developing a custom smart contract or dapp, all of these endeavors require an experienced professional to plan, build and ultimately release your next million dollar project. Why? Because without the right people and expertise, a lot can go wrong in the volatile world of blockchain and cryptocurrencies. Projects get hacked for millions of dollars in customer funds, million dollar launches crash due to code bugs and errors, developers don't know how to solve highly technical problem or projects get delayed and go over budget due to poor planning. Luckily a few of us have got it figured out by going through the process many times ourselves and figuring out the best practices through deep experience. I will gladly help you out on this adventure which is starting a crypto project, startup or company. So, do you need that seasoned developer to ensure your project and vision succeed? Message me "BOOK" to book a free consultation call where we will go over your project and determine the right technical solution for you!
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    React
    Binance Coin
    Solidity
    Smart Contract
    NFT Minting
    Cryptocurrency
    Blockchain
    Blockchain Development
    Blockchain Platform
    JavaScript
    web3.js
  • $40 hourly
    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.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Distributed Ledger Technology
    Bitcoin
    Java
    Blockchain
    Solidity
    JavaScript
    Spring MVC
    Node.js
    MySQL
    MongoDB
  • $25 hourly
    𝐖𝐢𝐭𝐡 𝐨𝐯𝐞𝐫 𝟏𝟎 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐢𝐧 𝐅𝐮𝐥𝐥-𝐬𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐂𝐌𝐒 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞, 𝐈 𝐛𝐫𝐢𝐧𝐠 𝐚 𝐰𝐞𝐚𝐥𝐭𝐡 𝐨𝐟 𝐤𝐧𝐨𝐰𝐥𝐞𝐝𝐠𝐞 𝐚𝐧𝐝 𝐬𝐤𝐢𝐥𝐥𝐬 𝐭𝐨 𝐭𝐡𝐞 𝐭𝐚𝐛𝐥𝐞. 𝐌𝐲 𝐩𝐫𝐨𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲 𝐬𝐩𝐚𝐧𝐬 𝐚𝐜𝐫𝐨𝐬𝐬 𝐚 𝐰𝐢𝐝𝐞 𝐫𝐚𝐧𝐠𝐞 𝐨𝐟 𝐭𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 𝐚𝐧𝐝 𝐟𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬, 𝐢𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠 𝐍𝐨𝐝𝐞𝐉𝐒, 𝐑𝐞𝐚𝐜𝐭𝐉𝐒, 𝐖𝐞𝐛𝐒𝐨𝐜𝐤𝐞𝐭, 𝐖𝐞𝐛𝐑𝐓𝐂, 𝐀𝐧𝐠𝐮𝐥𝐚𝐫𝐉𝐬, 𝐕𝐮𝐞𝐉𝐬, 𝐍𝐞𝐱𝐭𝐉𝐬, 𝐍𝐞𝐬𝐭.𝐉𝐬, 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭, 𝐒𝐚𝐚𝐒, 𝐏𝐇𝐏, 𝐋𝐚𝐫𝐚𝐯𝐞𝐥, 𝐌𝐲𝐒𝐐𝐋, 𝐌𝐨𝐧𝐠𝐨𝐃𝐁, 𝐚𝐧𝐝 𝐖𝐨𝐫𝐝𝐏𝐫𝐞𝐬𝐬/𝐖𝐨𝐨𝐂𝐨𝐦𝐦𝐞𝐫𝐜𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭. Here's a detailed breakdown of my technical expertise: ========================================== 𝐂𝐌𝐒: I am well-versed in working with popular content management systems like WordPress and Shopify, enabling me to create robust and customizable websites tailored to your specific needs. 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: From crafting responsive and intuitive user interfaces using React.Js, Angular, and Vue.Js to leveraging cutting-edge technologies like Next.Js and TypeScript, I excel in delivering engaging frontend experiences that captivate users. 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: With expertise in Node.Js, Nest.Js, TypeScript, REST APIs, and GraphQL, I have a proven track record of building scalable and efficient backend systems that power dynamic web applications. 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Whether it's deploying apps on Expo, Google Play, or the App Store, I am proficient in developing cross-platform mobile applications that deliver seamless performance and user experiences. 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 𝐚𝐧𝐝 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐀𝐬𝐬𝐮𝐫𝐚𝐧𝐜𝐞: I have extensive experience in employing testing frameworks like Jest, Cypress, Jasmine, Mocha, and Karma to ensure the reliability and stability of web applications. 𝐕𝐞𝐫𝐬𝐢𝐨𝐧 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 𝐚𝐧𝐝 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: I am well-versed in using version control platforms like GitHub, Gitlab, and BitBucket, and I am proficient in project management methodologies such as Agile, Kanban, and Git Flow. Additionally, I am familiar with project management tools like Asana, Trello, and Jira, ensuring streamlined collaboration and efficient project delivery. 𝐃𝐞𝐬𝐢𝐠𝐧 𝐓𝐨𝐨𝐥𝐬: Proficiency in Adobe Photoshop, Figma, Zeplin, and InVision enables me to translate design concepts into visually stunning and functional web applications. 𝐁𝐞𝐬𝐭 𝐏𝐫𝐚𝐜𝐭𝐢𝐜𝐞𝐬 𝐚𝐧𝐝 𝐌𝐞𝐭𝐡𝐨𝐝𝐨𝐥𝐨𝐠𝐢𝐞𝐬: I adhere to industry best practices and methodologies such as CI/CD, TDD, DRY, KISS, SOLID, GRASP, YAGNI, and DIE, ensuring code quality, maintainability, and scalability. By following the Agile methodology, I prioritize clear communication and collaboration, keeping my clients informed at every stage of the project life-cycle. My goal is to not only meet but exceed your expectations by delivering high-quality solutions that align with your business objectives. I'm passionate about leveraging technology to solve complex problems and am dedicated to delivering results that drive success for your business. 𝙋𝙡𝙚𝙖𝙨𝙚 𝙙𝙤𝙣'𝙩 𝙝𝙚𝙨𝙞𝙩𝙖𝙩𝙚 𝙩𝙤 𝙧𝙚𝙖𝙘𝙝 𝙤𝙪𝙩 𝙩𝙤 𝙙𝙞𝙨𝙘𝙪𝙨𝙨 𝙝𝙤𝙬 𝙄 𝙘𝙖𝙣 𝙝𝙚𝙡𝙥 𝙗𝙧𝙞𝙣𝙜 𝙮𝙤𝙪𝙧 𝙥𝙧𝙤𝙟𝙚𝙘𝙩 𝙩𝙤 𝙡𝙞𝙛𝙚. 𝙄'𝙢 𝙚𝙖𝙜𝙚𝙧 𝙩𝙤 𝙝𝙚𝙖𝙧 𝙛𝙧𝙤𝙢 𝙮𝙤𝙪 𝙖𝙣𝙙 𝙚𝙭𝙥𝙡𝙤𝙧𝙚 𝙩𝙝𝙚 𝙤𝙥𝙥𝙤𝙧𝙩𝙪𝙣𝙞𝙩𝙮 𝙩𝙤 𝙘𝙤𝙡𝙡𝙖𝙗𝙤𝙧𝙖𝙩𝙚.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    MERN Stack
    WooCommerce
    Plugin Development
    Ecommerce Website Development
    NFT Marketplace
    Web3
    Blockchain
    API Integration
    WordPress
    React
    MongoDB
    MySQL
    PHP
  • $40 hourly
    👋 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. 🔧 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 🚀 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. 🧠 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! 🌟 Let's build something amazing together! 🌟
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Solidity
    Emerging Tech Consultation
    Blockchain Development
    Machine Learning
    Django
    NestJS
    Next.js
    PostgreSQL
    PHP
    MySQL
    JavaScript
    Python
    Node.js
    React
    AI Development
  • $70 hourly
    I have over 1 year of experience working on NFT projects and have developed smart contracts for major NFT collections like DEGEN TOONZ (top-100 on Opensea, 9k ETH trading vol). I specialize in ERC-721/ERC-721A/ERC-1155 smart contracts for minting with special features such as gas optimization, presale/whitelist, reveal, burn & royalties. I can deploy the contracts on Ethereum and launch the NFT collection on marketplaces like Opensea. I can also build a minting dapp to connect crypto wallet (like Metamask) and mint NFTs from the smart contract.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    NFT Marketplace
    Truffle
    JavaScript
    React
    NFT Collection Generation
    NFT Minting
    Blockchain Development
    NFT Metadata
    Smart Contract
    Solidity
  • $50 hourly
    I am a passionate and results-driven developer with blockchain expertise and arbitrage bot technologies. My unique skill set allows me to create innovative, secure, and intelligent solutions for a diverse range of industries, including finance, healthcare, supply chain, and more. My blockchain development experience includes working with platforms such as Ethereum, Binance Smart Chain, Polygon, Arbitrum, SEI, and Solana. I have a solid understanding of smart contract programming using languages like Solidity/Rust, and I am well-versed in tools like Truffle, Ganache, Remix, and web3.js. My experience in developing decentralized applications (dApps) and working with DeFi, NFTs, DAO, Cross-chain voting, ERC 20/721/1155/4337, Memecoins, Security Audits, MEV sandwich, Automated trading bots, Telegram/Discord bots, Chrome extension, and privacy-preserving technologies like Zero-Knowledge proofs has enabled me to create secure and decentralized solutions for various use cases. As a developer with a unique combination of blockchain expertise, I am eager to contribute to projects that push the boundaries of what is possible and create groundbreaking solutions for the future. Please feel free to reach out if you would like to discuss potential opportunities, and collaborations, or simply exchange ideas in the exciting domains of blockchain and bot developments.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Cryptocurrency Trading
    Web3
    Rust
    Blockchain, NFT & Cryptocurrency
    React
    Solidify
    Bot Development
    Telegram
    Blockchain
    Solana
    Python
    Node.js
    Smart Contract
    Blockchain Architecture
  • $45 hourly
    Hi! I have 2+ years of experience creating NFTs and ERC20/BEP20 tokens including a fractionally algorithmic stablecoin with liquidity pools and an appropriate incentive structure. I have a degree in Engineering and have prior experience dealing with research level mathematics. If you have the time feel free to checkout my GitHub: github.com/CodeSaint98
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Front-End Development
    DApps
    Cryptocurrency
    Docker
    Solidity
    Node.js
    Rust
    API
  • $60 hourly
    Blockchain developer since 2020. - Smart Contracts writing and testing. - Descentralized Applications. - NFTs and Marketplaces. - Tokens. - Web3 integration. - APIs - Solidity - Web3, Ethers - Hardhat, Truffle, - JavaScript - React - NodeJs - Ethereum and EVM Blockchains. - ERC721, ERC1155, ERC20 Blockchain is evolving really fast, so I'm working, learning and improving everyday to stay up to date. If I don't know the answer to a problem, I will dive into the documentation and come back with a solution. Let's discuss your project and start working together.
    vsuc_fltilesrefresh_TrophyIcon Ethereum
    Blockchain Development
    Blockchain Architecture
    Blockchain
    web3.js
    Solidity
    Smart Contract
    DApps
    React
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