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4.7/5
based on 3,380 client reviews
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  4. (Current) Blockchain Developers
  • $150 hourly

    • 5.0/5
    • (264 jobs)
    I am a cybersecurity professional with a Master's Degree in Cyber Operations and two years of work experience in cybersecurity research and development at a world-class R&D laboratory. In that job, I gained experience in network traffic analysis, malware analysis, and cryptography. For over two years, I have worked as a freelancer, providing consulting, content development, and course creation in cybersecurity and blockchain security. I specialize in development of technical content (blogs, whitepapers, case studies, and courseware) in the field of cybersecurity. I currently hold the Certified Ethical Hacker and Certified Blockchain Security Professional certifications.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Reverse Engineering
    Cryptocurrency
    Cryptography
    Information Security
  • $130 hourly

    • 5.0/5
    • (11 jobs)
    Extensive expertise, and experience in taking idea to a deliverable product / MVP. Primarily from my experience being the technical lead at a small size venture funded start up I've had the chance to First, explore a wide variety of languages, frameworks, and technologies allowing me to have a full conceptual overview of the tools at my disposal, and their respective benefits + pitfalls, and second have the experience working with, and managing a small distributed team closely with the CEO.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Solidity
    Smart Contract
    Web Scraping
    Node.js
    React
    Golang
    Vue.js
    GPT-3
    Rust
    Next.js
    GPT-4
    ChatGPT
    Web Development
    CSS
  • $90 hourly

    • 5.0/5
    • (49 jobs)
    I'm a full-stack developer with 20 years of professional experience delivering solutions to a wide range of customers, from single founder startups to large corporations. I see myself as a force multiplier - in addition to my technical skills, I have been successfully managing development teams implementing complex solutions while acting as a hands-on team lead. My experience and the wide range of technical and management skills allows to implement almost any kind of project from scratch or breathe a new life into an existing or struggling project. I have great oral and written English communication skills and I have been a bridge of communication between development teams and non-technical owners in different projects. Some of my recent projects: ⭐ Architecting and leading the implementation of a unique blockchain powered gaming site Role: blockchain and frontend architect, backend developer, team lead of several frontend developers and QAs ⭐ Implementing a learning/training management system with a heavy focus on creating a low-code builder which allows creating interactive parts of the application via GUI Role: I architected the solution, implemented the backend part of it and was overseeing a fairly large team of frontend developers ⭐ Cross-platform mobile applications which act as market trading simulators and provide authentic financial market trading experience through real time data and interactive charts. The applications have top ratings in both Android and Apple stores in a very competitive space and have seen several million installs over the last few years with hundreds to thousands of online users at any given time Role: architecture and full implementation of frontend and backend ⭐ Implemented and provided ongoing development support for one of the leading student portals with several hundreds of thousands of active registered users Role: architected and implemented the original solution and transformational upgrades over the years I have also been at the entrepreneur/owner side of the fence for several years. I have architected, developed and marketed multiple commercial web software products, websites and mobile applications of my own and worked on hundreds of customization projects for these products. Capable of leading development teams and architecting complex systems and subsystems. Thorough understanding of e-commerce. Some of my technical skills are listed below Blockchain development: * Solidity (Ethereum / Binance / Polygon), frontend integration with wallets, i.e, Metamask * Solana (Rust, Anchor, Web3 API, SPL), frontend and mobile integration, i.e, with Phantom * Icon (Python, Java based smart contracts) * Smart contract implementation and architecture planning * Token and NFT implementation (ERC-20, ERC-777, ERC-1155, SPL on Solana) * Automated contract testing * Blockchain node maintenance Backend development: * Node.js * PHP with Phalcon and other MVC frameworks (Laravel, Symfony) * MySQL/MariaDB, InfluxDB, TimescaleDB, PostgreSQL, MongoDB, Redis * Python (Django, smart contracts) * Firebase (Real time database, Firestore, functions, optimization) * Test driven development (unit testing via PHPUnit, Mocha, AVA) * Message queues (RabbitMQ, ZeroMQ, Bull) * Google Cloud, AWS * Grafana * Task runners (Webpack, Gulp, Grunt, Bower) * Architecture visualization and planning via UML, ER diagrams Frontend development: * Angular, RxJs (also AngularJS for legacy projects) * Vue.js, nuxt.js * Javascript / Typescript (ES6, npm, Underscore/Lodash, CanvasJS, jQuery) * Tailwind, Bootstrap * Flow * CSS 3, SASS, LESS * HTML5 * Figma, Photoshop, GIMP, Avocode Team management: * Task planning and specification * Ongoing communication with developers to catch any potential issues early and help the team move forward as quickly as possible * PR reviews * Mentoring * New developer vetting / sourcing * JIRA / Trello / Slack Cross platform mobile application development: * Ionic/Cordova (Android/iOS/web) DevOps: * Linux server administration and performance tuning (Ubuntu, CentOS, RedHat, FreeBSD) * AWS, Google Cloud * Docker, Kubernetes * Apache, nginx configuration and optimization * Mail, DNS server configuration * Prometheus APIs: * API and microservice driven architecture * Amazon Seller Central, Amazon MWS * PaypaI, Stripe and many other payment processors * Shipping APIs * Instagram * OAuth (Facebook, Google, etc.) * Twilio Source code management * Git (and legacy systems like Mercurial and SVN) * Branching / CI/CD strategy * PR / code reviews * Github, Bitbucket, Gitlab Scraping: * Web scraping * Mobile app scraping * Mitmproxy, Charles Proxy * CSS4 queries Specialties: * Low-code systems * Cross-platform mobile applications * Single page applications * Web scraping, mobile app scraping * Forex, stock, commodity, cryptocurrency and other financial markets * E-commerce applications * Localization and internationalization, RTL layouts
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    FinTech
    Blockchain Architecture
    Forex Trading
    Team Management
    Mobile App Development
    Solana
    Ecommerce Website Development
    Solidity
    Software Architecture & Design
    Full-Stack Development
    JavaScript
    Web Development
    MySQL
    Angular
  • $30 hourly

    • 4.3/5
    • (13 jobs)
    I am great at analyzing and creating smart contracts. I have created several different blockchain forks and used testing frameworks extensively.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Vue.js
    Solana
    Next.js
    Solidity
    Smart Contract
    Blockchain Architecture
    Bitcoin
    DApp Development
    Rust
    Ethereum
    web3.js
    React
    JavaScript
  • $35 hourly

    • 5.0/5
    • (18 jobs)
    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 Blockchain
    Solidity
    PDF Conversion
    Django
    Scripting
    web3.js
    Smart Contract
    React
    HTML5
    Ethereum
    CSS
    jQuery
    JavaScript
    Python
    Data Extraction
  • $50 hourly

    • 5.0/5
    • (10 jobs)
    ✅ Top Rated ✅ 5 Star feedbacks ✅ 4+ Years Experience in Development Welcome to my profile! I'm an experienced Ethereum and Solana Blockchain Developer dedicated to crafting innovative solutions for your decentralized projects. With expertise in DApp development, smart contracts, and ERC/SPL tokens, I offer tailored solutions to meet your needs. What I Offer: DApp Development: Harness blockchain potential with seamless DApp development, ensuring security and scalability for enhanced user experiences. Smart Contracts: Write reliable Solidity and Rust smart contracts for various use cases, from ICOs to DeFi protocols, ensuring code efficiency and robustness. ERC & SPL Tokens: Create custom ERC-20, ERC-721, and SPL tokens adhering to Ethereum and Solana standards, enabling tokenization and asset management functionalities. Contract Auditing: Identify vulnerabilities and ensure smart contract security through comprehensive auditing services, minimizing potential exploits. Integration & Deployment: Seamlessly integrate DApps and smart contracts with Ethereum and Solana blockchains, managing the entire deployment process for a smooth transition to production. Blockchain Consultation: Receive expert advice on blockchain integration and feasibility assessments, exploring potential use cases for your business. Why Choose Me: Expertise: Years of hands-on experience in blockchain development, specializing in Ethereum and Solana protocols. Custom Solutions: Tailored solutions to meet unique project requirements, ensuring optimal results. Reliability: Timely delivery and transparent communication throughout the development process. Security-Focused: Implementation of industry best practices to safeguard projects against potential threats. Ready to leverage Ethereum and Solana for your next project? Let's connect and discuss your ideas. I'm excited to contribute to your journey towards decentralized innovation!
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    DApps
    Ethereum
    Smart Contract
    Blockchain Development
    Solana
    React
    Solidity
    web3.js
    Blockchain Architecture
    Node.js
    Truffle
    Initial Coin Offering
    Cryptocurrency
    Cryptography
    Rust
  • $50 hourly

    • 5.0/5
    • (36 jobs)
    I am here to do any kind of web development task for you, and specially if it's WordPress or Shopify related, I'm the one whom you're looking for :) During the NFT boom, got a good knowledge and experience of the NFTs. I did work on 6 NFT projects as a developer. I'm a web developer having 6+ years experience and PHP, MySQL, Laravel, JS, jQuery, Liquid, HTML and CSS are the languages that I have been playing with all this time. I have been mostly working on plugin / add-on development and it's been my favorite. I have developed over 50 custom WordPress plugins for my clients. I also have fixed bugs and customized a lot of websites, also designed some from scratch.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Blockchain Development
    Cryptocurrency
    Shopify Apps
    Mobile App Development
    Ecommerce Website Development
    MySQL Programming
    Plugin Development
    Theme Development
    WooCommerce
    Shopify
    WordPress
    PHP
    Laravel
  • $40 hourly

    • 4.3/5
    • (8 jobs)
    With 10 years of software development experience, my skill set includes expertise in frontend, backend, and devops domains. Throughout my career, I have had the opportunity to work remotely in small and medium teams on a variety of projects. This exposure to diverse responsibilities has allowed me to explore and become proficient in a wide range of technologies, frameworks, and development methodologies. I have thrived in fast-paced and ever-changing startup environments, where adaptability and quick learning are key. After spending 7 years as a fullstack developer, I decided to specialize in backend engineering and have since predominantly utilised the Golang programming language. My passion for blockchain technology has led me to actively participate in multiple projects in this field. Here are some of the technologies and frameworks I have worked with: Backend: - Proficiency in Golang and Node.js. - Leverage of node.js frameworks like Express.js, Nest.js and Koa. - Leverage of Golang frameworks like Gin and Echo. - Undertaken side projects involving Rust and Python. Databases: - Competence in SQL databases such as PostgreSQL and MySQL. - Experience with NoSQL databases like MongoDB. - Familiarity with time series database like TimescaleDB. APIs and Communication: - Proficient in building REST, GRPC, and GraphQL APIs. - Skilled in implementing authentication mechanisms using JWT, OAuth, and session cookies. - Experience working with event-oriented architectures utilising NATS, Kafka, and SQS. Monitoring and Logging: - Utilised Sentry and Prometheus for monitoring applications. - Employed Papertrail for effective logging. Devops: - Proficient in setting up pipelines using GitHub Actions and CircleCI. - Experienced in containerization using Docker and Kubernetes. - Skilled in serverless architecture and setting up Lambda functions. - Proficient in using infrastructure-as-code tools such as CDK and Terraform. - Hold an AWS Solutions Architect Certificate. - Familiarity with multiple cloud providers including AWS, Azure, GCP, and OpenStack, gained through the development of a deployment client tool. Frontend: - Proficiency in HTML, CSS, and JavaScript. - Expertise in frontend frameworks such as React and Angular. - Experienced in server-side rendering using Next.js. - Utilized UI frameworks like Material UI and Bootstrap. - Knowledgeable in optimizing application bundles using webpack. My extensive experience across these domains showcases my adaptability and versatility as a developer. I am confident in my ability to deliver high-quality solutions that meet the requirements of each project I undertake.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Linux System Administration
    DevOps
    Agile Software Development
    JavaScript
    Git
    Node.js
    React
    MongoDB
    Docker
    PostgreSQL
    Golang
  • $40 hourly

    • 4.6/5
    • (30 jobs)
    💡𝗔𝗯𝗼𝘂𝘁 𝗠𝗲: 🌐 10 years of full-stack web development experience (Java EE, Spring, JS) 🌐 Extensive experience in FinTech, CRMs, and blockchain projects as a Team Lead 🌐 Experience with cryptocurrency development (Ethereum, Smart Contracts) 🌐 Can help your organization launch an ICO (initial coin offering) 🌐 Unit testing, Acceptance/Automation testing 🌐 Cryptocurrency wallet and exchange development 🌐 Ethereum development (smart contracts written in Solidity, ERC20 tokens, etc) 🌐 ICO technical consulting, smart contract security auditing, blockchain consulting 💡𝗠𝘆 𝗺𝗮𝗶𝗻 𝗦𝘁𝗮𝗰𝗸: With Solidity, I don't just code - I compose a masterpiece of smart contracts, and there are no tasks I couldn't make. So, I'm fluent with: - Solidity, Go, JavaScript, Node.js, React.js - ethers, hardhat, chai, matcha, API, various frameworks, сryptography, cryptocurrencies; 💡𝗣𝗼𝗿𝘁𝗳𝗼𝗹𝗶𝗼 🏦 - EuropaLabs - Led development for NFT-driven ticketing flow for the most profitable ultraclub by square foot. Built Web3 optimized operational flow for token-gated event access to IRL events. 💰 - Lympo - The NFT platform is undergoing changes – prepare to experience a new era of Lympo and get ready for the world of SPORT! 💼 - DuckSTARTER - is DuckDAO’s public token launchpad, a service platform for blockchain projects. It will act as the final bridge between early-stage projects and the community before the project goes fully public. 📜 - Smart contracts....thousands of them 🏄🏼‍👽 🏆 I'm super curious about Dapps, FinTech, CRMs, DeFi LETS PUMP IT UP TOGETHER!🎯🚀
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Java
    Ethereum
    GitHub
    JavaScript
  • $50 hourly

    • 5.0/5
    • (75 jobs)
    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 Blockchain
    Web3
    Ethers.js
    Smart Contract Development
    Blockchain, NFT & Cryptocurrency
    React
    DApps
    Web Development
    Node.js
    web3.js
    Solidity
    Blockchain Development
    JavaScript
    Ethereum
    Smart Contract
  • $20 hourly

    • 5.0/5
    • (4 jobs)
    Blockchain developer, specialized in custom cryptocurrency and blockchain development. I have extensive experience in ICO, POS – Proof of Stake, blockchain website, web portal, & smart contracts application development. I am very proficient with the solidity programming language, Ethereum, token generation, digital currency exchange, proof of work (POW), and building innovative, highly customized, robust, feature-packed, and modular blockchain development solutions. I am responsible for designing and implementing new innovative features and functionalities, establishing the blockchain, cryptocurrency, ICO, smart contracts application architecture, ensuring high-performance and availability, and managing all blockchain development & technical aspects. I work closely with project stack holders and end customers to provide an effective, visually appealing, and intuitive implementation. As a full-stack blockchain developer & solidity programmer, I have successfully delivered a wide range of custom cryptocurrency and blockchain development projects using the smart contracts solidity language with eye-catching user-friendly UI design and high-end functionalities. I understand all aspects of developing Blockchain applications: design, architecture, development, and publishing. With the consummate evaluation of your blockchain development requirements and comprehensive engagement in blockchain technology, I provide custom application development, token generation, creative theme development, and maintenance services that cater to myriad industry verticals. Are you looking full time & dedicated blockchain developer to develop a user-friendly high-end functionality based ICO, cryptocurrency or smart contracts web application? I will love to engage myself as a full-stack blockchain developer and assist you with innovative and creative strategies. My Technical Blockchain Development Expertise: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ Being a full-stack blockchain developer, I have decent expertise in Blockchain development and custom smart contract application development technologies: ✅ Server-Side Languages: PHP, Node JS ✅ Frameworks: Express Js, YII2, Laravel, CakePHP ✅ JavaScript Frameworks: Angular Js, Jquery. ✅ Smart contract language: Solidity ✅ Data Management: o RDBMS: MySQL 5.X, PostgreSQL, Amazon RDS o NoSQL: MongoDB. o Caching: Memcached, Redis o Searching: Solr, Lucene, Elasticsearch, Amazon CloudSearch ✅ Queue: ActiveMQ, Amazon SQS ✅ Server Technologies: Linux, Ubuntu ✅ Cloud Computing Platforms: Amazon Web Services ✅ Frontend Stack: o Languages: HTML5, CSS3, Sass, JavaScript o UI Frameworks: Bootstrap, jQuery UI o JavaScript Frameworks: React, Backbone.js, Angular 2 ✅ Third-Party APIs Integration: o Payment Gateway: PayPal, Stripe, Authorize.Net, Coinpayments.net o Social: Facebook, Twitter, Google+ o Geo-location: Google Maps, Bing Maps o File Storage: Dropbox, Google Drive Blockchain Development Services We Offer: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ Being a full-stack blockchain developer & solidity programmer and associated with an ISO certified blockchain development company, I develop rapid, error-free website & web applications to achieve an enterprise's functionality implementation and business logic with minimum complexities ✅ Custom Blockchain Development ✅ Smart Contracts Development ✅ dApps Development ✅ Crowdsale ✅ Hyperledger & Multichain Development ✅ Multichain/Supply Chain Development ✅ Custom Cryptocurrency Development ✅ Crypto App Development ✅ ICO Web Development ✅ POC Development ✅ Cryptocurrency Wallet and Exchange Applications ✅ Private Blockchain Development ✅ Blockchain Consulting ✅ Blockchain Testing ✅ Ongoing Blockchain Development Support and Maintenance ✅ Full-Stack Blockchain Development ✅ Full Time Dedicated Blockchain Developer ✅ Half Dedicated Blockchain Developer Hourly Basis How do we communicate and report? ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ We always prefer to keep our work transparent, and for this reason, we like to be in touch with our valued clients on a daily, weekly & monthly basis. According to the requirement, we use many types of project management tools for the blockchain development project's communication. ⦿ Upwork Message Board ⦿ JIRA ⦿ Azure DevOps Server ⦿ Asana ⦿ Trello ⦿ Zoho Projects
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Blockchain Security
    DApps
    Blockchain Development Framework
    Blockchain, NFT & Cryptocurrency
    NFT
    web3.js
    Bitcoin
    Cryptocurrency
    Node.js
    Solidity
    Blockchain Architecture
    Blockchain Development
    Web Development
    Ethereum
  • $99 hourly

    • 5.0/5
    • (30 jobs)
    After working in 5 startups and 3 Sillicon Valley companies, I have a long history of designing, developing and deploying entire Blockchain and Full Stack solutions to companies of all sizes. I'm proficient with web3, front end and back end development. Another advantage that I have are my communication skills: I'm good at listening to the client, understanding the requirements and delivering effective and efficient solutions with aggressive deadlines. I have developed multiple projects with great client satisfaction. Some examples include: - NFT Marketplace with tokens reedemable for physical assets (Solidity) - NFT minter for videogame startup (Solidity) - Backend for NFT minting site (Javascript/Typescript) - Taxable ERC20 Token (Solidity) - ERC20 Token on Pancakeswap for a Virtual Reality startup (Solidity) - NFT Smart Contract Audit (Solidity) We can meet for a demo, I can show you the above examples and more. I have extensive experience with Solidity, Hardhat, Python Flask, Python Django, React, React Native, Angular, Ionic, TypeScript, JS and JS frameworks/libraries in general. I'm confident my skills will be very valuable to your project. I understand that you are on a tight schedule. I'd like to follow up ASAP to maximize available time. Please let me know when you're available so we can discuss this in depth. Cheers!
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Solidity
    Smart Contract
    React Native
    C#
    Django
    Flask
    HTML5
    CSS 3
    React
    JavaScript
    Angular
    jQuery
  • $60 hourly

    • 4.8/5
    • (13 jobs)
    ⭐⭐⭐⭐⭐ "Akhil is totally fantastic. His work had a tremendous impact on our product. He is very punctual, responsive, and professional in every way imaginable." Some key highlights about me: ✅More than 5 years of web3 development experience ✅Full stack development capability (I have experience working with Solidity, React, NodeJS, Typescript, Go, Python and many more ) ✅I run Coding Sheep, a web3 dev shop and helped more than 20+ projects in last 2 years. ✅24/7 ultra-reliable communication: you will always be aware of the project status Some of the products that i am proud of ❤️ Nibbl : A NFT fractionalisation platform and marketplace. ❤️ Density : A cutting edge crypto derivative exchange 🏆 Why you should choose me over other freelancers 🏆 1️⃣ Client Reviews: I focus on providing value to all of my clients and earning their TRUST. 2️⃣ Responsiveness: being extremely responsive and keeping all lines of communication readily open with my clients. 3️⃣ Resilience: For any issue that my clients face, I attack them and find a solution.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    DApps
    React
    Elliptic Curve Cryptography
    Cryptocurrency
    Bitcoin
    NFT Marketplace
    Ethereum
    Blockchain Development
    web3.js
    Node.js
    Solidity
    Tezos
    Smart Contract
  • $50 hourly

    • 5.0/5
    • (31 jobs)
    I specialize in architecting and building systems using Golang and Python, specifically with FastAPI and Django. I have extensive experience working with these frameworks, utilizing them to efficiently develop prototypes and MVPs, as well as designing robust, high-performing, and scalable production systems. Additionally, I am well-versed in creating APIs with Django REST Framework, performing task-based processing with Celery, and integrating various external systems. As a full stack software engineer, I am highly proficient in React, Vue, and the essential HTML/CSS/Javascript components necessary for frontend development in any application. In addition to my expertise in web development, I also possess knowledge in low-level systems and native Android development. Furthermore, I have experience in data science and visualization, familiarizing myself with the scientific Python stack and D3 JS. My technical stack: AWS, Google Cloud, Golang, Python, Django, RestAPI, Multiprocessing, Scrapy, Blockchain, Ethereum, Solana, HBAR, L1 and L2 blockchains, Microservices, AWS Lambda, AWS Step Functions, AWS S3, GRCP
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Ethereum
    Android SDK
    iOS Jailbreaking
    AWS Cloud9
    Golang
    iOS Development
    Python
    AWS Lambda
    Google Cloud Platform
    Java
    Android App Development
  • $25 hourly

    • 5.0/5
    • (103 jobs)
    * Web Platform Development * Mobile Apps Development I have more than 16 years of experience in the software development industry. I have been involved in different projects from scratch, including iPhone, iPad, Android apps, websites, and enterprise-level applications. We have used Objective C, Swift/SwiftUI, Kotlin, Flutter, Java, and Hybrid Platform like React Native. Expert in Java J2EE, Spring, Node JS, React JS, Angular, and databases (MySQL, MariaDB, MongoDB, Sqlite, MS-SQL, and Oracle) Web development includes PHP, Java, Laraval, and open-source tools WordPress, Joomla, Drupal and Shopify, Big Commerce, Woo-commerce. In the modern era, people have a great sense of the quality of the product. To enhance my skills for understanding the overall attributes of quality, I got a degree in MS Total Quality Management.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Software Design
    DevOps
    WordPress
    FinTech Consulting
    Agile Project Management
    MySQL Programming
    Laravel
    Android App Development
    PHP
    Java
    Node.js
    iOS Development
    React
    React Native
  • $20 hourly

    • 5.0/5
    • (66 jobs)
    ■ Programming languages: Java SE/EE, Spring (MVC,Boot,IOC), JDBC, SQL, Object-Oriented Programming (OOP), JSP,Node,Soldity,Javascript, Angular,React, ■ Web and Mobile Automation tools: Java, Selenium WebDriver, Spring MVC, Maven, TestNG/JUnit, Firebug, Appium, ADB, UIAutomator; ■ Webservers: Tomcat,GlassFish,Oracle WebServer; ■ Good knowledge of Java programing patterns; ■ Performance/Load tools: Jmeter; ■ Test Environments: Local, Grid, BrowserStack, Sauce Labs, AWS Farm Devices, Docker; ■ Web programming languages/technologies: HTML, Angular ,React, CSS, JavaScript, XPath, XML, JSON; ■ IDE: Eclipse; ■ CI: Jenkins(Pipelines); ■ Control version system: GIT, SVN; ■ API: SOAP, REST; ■ Issue/Story Trackers: Jira, Redmine, Track Studio, HPQC, Rally; ■ OS: Windows XP/7/8.1/10, Linux Cent OS/Ubuntu, Android, IOS, (VMware Workstation); ■ MS Office;
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Spring Boot
    Hibernate
    Java Persistence API
    DApps
    Java
    Ethereum
    Blockchain Architecture
    Node.js
    IBM Blockchain
    Solidity
    web3.js
  • $60 hourly

    • 5.0/5
    • (15 jobs)
    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 Blockchain
    Blockchain Development
    Blockchain Architecture
    web3.js
    Solidity
    Smart Contract
    DApps
    React
  • $60 hourly

    • 5.0/5
    • (2 jobs)
    Hi There, My core experience ranges from both front-end blockchain applications to back-end architecture design and implementation, smart contract development, and development of dApps for Fintech and other industries that need the push of decentralization, tokenization, and smart contracts. ✅ Public Blockchain Platforms: 🔸 Ethereum: ✓ Creating smart contracts using a Solidity programming language. ✓ Creating RPC using client libraries like Web3. ✓ Static analysis of smart contracts for gas consumption & optimization using Remix IDE. ✓ Security of smart contracts using libraries like OpenZeppelin. ✓ Creating Ethereum dApps using Truffle framework. ✓ Integration with crypto wallets such as Metamask. ✓ Deploying smart contracts on test networks such as ropsten/rinkeby as well as Ethereum mainnet. ✅Private & Consortium Blockchain Platforms 🔸 Hyperledger Fabric ✓ Creating Chaincode using the Go programming language. ✓ Proof of concepts using Hyperledger Composer. ✓ Integration with Fabric Java SDK. ✓ Creating RESTful APIs for client applications to communicate with the blockchain networks. ✓ Creating channels, orderers, and peers. ✓ Deployment and instantiation of Chaincode on channels on cloud services like IBM Bluemix and Amazon AWS. ➤ Expertise with: - Node.js / Express.js - React.JS / Redux / Mobx - Angular.JS / Backbone.JS / Javascript / jQuery - MySQL / SQLite / MongoDB / PostgreSQL - Experience with Elastic Search / Solr - Deployment on Heroku / VPS / Amazon Web Services (AWS) / DigitalOcean - Git, Bitbucket etc. ➤ I can help you with: - Cryptocurrency exchange platform - ICO/ IEO / STO Development - Cryptocurrency wallet development - Dapp development with smart contract Would love to discuss this in detail with potential clients. I assure you that a small call will be worth your time. Thanks
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Vue.js
    Binance Coin
    CSS
    HTML
    Node.js
    Smart Contract
    DApps
    Angular
    JavaScript
    React
    Bitcoin
    Ethereum
    Cryptocurrency
    Solidity
  • $60 hourly

    • 4.9/5
    • (110 jobs)
    Hello, I'm Suleman Muhammad, a seasoned Blockchain Developer with over 5 years of rich experience in creating and auditing decentralized applications (Dapps). Having successfully completed more than 100+ Dapps projects, my expertise lies in bringing innovative blockchain solutions to life. My journey in this dynamic field is marked by a relentless pursuit of knowledge and excellence, driving me to constantly explore and master emerging technologies. My Blockchain Proficiency: I specialize in several blockchain platforms, offering versatility and adaptability in my services: Binance Smart Chain Ethereum Tron Solana Kucoin Polygon (Matic) My comprehensive skill set includes developing and auditing Smart Contracts, integrating Crypto Payment Gateways, and working on Tokenization, DeFi, DEX, and CEX projects. I have a strong track record in developing robust cryptocurrency solutions and wallets, ensuring they meet the highest standards of security and efficiency. Technical Skills: Beyond blockchain, I am proficient in: JavaScript React.js Node.js MongoDB Express.js Solidity IPFS These technical skills enable me to offer full-stack development services, ensuring seamless integration between blockchain applications and contemporary web technologies. Services Offered: I provide a range of services, from Decentralized application development to consultancy, catering to Blockchain startups and established companies alike. Whether you are looking to build a new product or enhance an existing one, my goal is to deliver solutions that not only meet your needs but also drive your business forward in the competitive world of blockchain technology. My Approach: As a self-motivated learner, I have a deep understanding of blockchain and decentralization, constantly staying ahead of industry trends. My approach is client-centric, focusing on understanding your unique requirements and delivering tailor-made solutions. I value clear communication and collaborative work, ensuring that every project is a shared journey towards success. Why Work with Me? With my extensive experience and a passion for blockchain technology, I am well-equipped to bring your vision to reality. Whether it's creating cutting-edge Dapps, conducting thorough smart contract audits, or providing strategic blockchain consultancy, I am dedicated to delivering excellence and innovation in every project.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Smart Contract Development
    Full-Stack Development
    Blockchain, NFT & Cryptocurrency
    DApps
    JavaScript
    Ethereum
    Cryptocurrency
    Blockchain Development
    Smart Contract
    Node.js
    Initial Coin Offering
    Blockchain Architecture
    Solidity
    web3.js
  • $47 hourly

    • 5.0/5
    • (21 jobs)
    Hi, I'm a Senior Software Engineer, a Blockchain Engineer, and a cryptography expert. I have comprehensive experience not only in blockchain technologies but also in mainstream software development, including Node.js, Express.js, and MongoDB. I would like to help you with your blockchain project, leveraging some of my specialized expertise as listed below. I was the inventor of many innovative techniques, such as autovesting, autoburn, and many other proven ones (you can connect with me to answer any of your questions). Smart Contracts development using Solidity Subgraph indexing using the graph Tokenomics Vesting Web3 integration Unit testing and testing using testnets such as Ropsten and Goerli networks. In-depth knowledge of ERC20 & ERC721 Smart Contracts Deployment to main net using Infura. NFT contract Token/ coin Contract Defi EXchange BEP1155 Hardhat NFT minting Opensea minting Auditing Frameworks & Tools I use: React for UI Node.js Express.js MongoDB Ether JS Hardhat MetaMask Wallet Integration Dapp Defi BSC The graph AWS I use the latest testing techniques, and I can even perform a mainnet fork to test code behavior and interactions with the existing mainnet environment. Let's connect if you are looking for these services, or if you have any questions, or would like to discuss further.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Blockchain, NFT & Cryptocurrency
    Solidity
    Blockchain Development
    Blockchain Platform
    JavaScript
    Grafana
    Binance Coin
    React
    MongoDB
    Smart Contract
    Node.js
  • $30 hourly

    • 5.0/5
    • (9 jobs)
    Welcome to my profile! As a dedicated and skilled blockchain developer, I bring a wealth of expertise to your project, specializing in creating robust and efficient blockchain solutions. My focus is on delivering high-quality services tailored to meet the unique needs of your project. Below is an overview of my expertise: Smart Contract Development Web3 Integration Comprehensive Testing Metamask Wallet Integration ERC20 & ERC721 Smart Contracts Mainnet Deployment NFT & Token/ Coin Contract Development DeFi Exchange Solutions Advanced Token Standards NFT Minting Solutions DAO Development Cross-Chain Technology Merkle Trees Smart Contract Auditing I am committed to providing top-notch services in blockchain development, ensuring your project's success with cutting-edge solutions. Let's collaborate to bring your blockchain vision to life! Thank you.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    ERC-721
    ERC-20
    ERC-1155
    React
    Web Development
    Cryptocurrency
    Web3
    NFT Minting
    Ethereum
    Blockchain Architecture
    DApp Development
    Solidity
    Smart Contract
    Blockchain Development
  • $30 hourly

    • 4.9/5
    • (20 jobs)
    An experienced Front-end developer cum UI/UI designer who can create the design from scratch on figma/adobexd/photoshop and also can convert this design to a fully responsive, functional website. Also I integrate the back-end to the front-end which means loading data from the database, removing items from the database etc.. developing and implementing user interface components using React.js concepts and workflows such as Redux, Flux, React memo ,Hooks and Webpack. Specializes in front-end design ======================= ✅ Working as a front-end designer who can convert any design from Figma, adobe xd, adobe photoshop, illustrator, sketch, and any other platform to a fully responsive elegant website. The layout will be clean, and modern and your website will have very good performance and 100% accessibility for the best user experience. Specializes in template customization = ============================ ✅ If you already have an existing template I can customize it to match your needs. I can customize the whole design, animation, and functionality to match your project needs. Expertise in all popular front-end libraries ================================ ✅ Carousels - Working with owl, slick, swiper, and can adapt to any carousel library very fast. ✅ CSS - Working with native CSS, tailwind, materialize, and bootstrap. Following CSS naming convention for clean code. ✅ Animations- Working with wow.js, GreenSock , and react reveal. ✅ Data visualization - Working with D3.js, and chart.js ✅ JavaScript - I’m very proficient in working with jQuery, ReactJS, NextJS, VueJS, WebSockets, Webpack, Babel, Eslint , TypeScript, Node.js etc. ✅ Database - MySQL, Firebase, SQLite, PostgreSQL, MongoDB. ✅ Performance - Your website will have a great performance to achieve a great user experience, as i follow every approach for making the website faster. ✅ Accessibility - I follow all the instructions provided by a11y so all people can access your website without any problem. ✅ SEO - I take the best practices to make your website ranks on google. ✅ Mobile applications- I make my mobile applications with React native, UI will be clean and works perfectly fine on both IOS and android. I’m able to make any mobile applications design. Whatever your website is I can build it: E-commerce, SASS, B2B, B2C, Crypto, admin dashboard. I can build it from scratch to be fully functional with payment gateways, integrating the back end to the front end.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Tailwind CSS
    HTML5
    Next.js
    PostgreSQL
    Material Design
    MySQL
    Node.js
    TypeScript
    React
    Solidity
    Smart Contract
    Blockchain, NFT & Cryptocurrency
    Ethereum
    Hyperledger Fabric
  • $35 hourly

    • 5.0/5
    • (8 jobs)
    Are you seeking a blockchain developer who can turn your decentralized dreams into reality? Look no further! I am a seasoned Fullstack Blockchain and Web3 developer with a wealth of experience in building robust, secure, and efficient blockchain-based solutions. ❓Why Choose Me: 🟢 With a strong grasp of blockchain principles and a knack for innovation, I've successfully crafted and deployed blockchain solutions across various networks, including Ethereum, Polygon, BinanceChain, and Solana. 🟢 I specialize in smart contract development, having created numerous contracts that have powered diverse projects. Whether it's DeFi, NFTs, or custom solutions, I've got you covered. 🟢 My skills extend beyond blockchain, encompassing languages like Solidity, Rust, C#, and JavaScript/TypeScript. I bring a versatile skill set to the table. 🟢 I collaborate closely with a group of trusted friends who share my dedication to delivering top-quality work. This partnership ensures your project stays on track and meets your exact requirements without delays. Your satisfaction and project success are our shared commitment. 🟢 Complex technical concepts don't intimidate me. I can translate them into clear, understandable language for non-technical stakeholders. Expect regular updates and transparent communication throughout our collaboration. ❗️Client Satisfaction Matters: I take pride in my reputation for delivering high-quality solutions on time and within budget. Over the years, I've garnered positive feedback from 10 satisfied clients and organizations. Your project's success is my priority, and I'm dedicated to making it happen. Let's work together to shape the future of blockchain technology. I'm eager to apply my skills and expertise to your project, helping your organization thrive in the blockchain and Web3 ecosystem. Feel free to reach out, and let's discuss how I can bring value to your project.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Decentralized Exchange
    DApps
    Blockchain, NFT & Cryptocurrency
    React
    DeFi
    NFT Marketplace
    Blockchain Architecture
    Solidity
    Crypto Exchange Platform
    Ethereum
    Blockchain Development
    Blockchain Security
    Blockchain Platform
    Smart Contract
  • $20 hourly

    • 4.5/5
    • (32 jobs)
    As a seasoned Crypto Geek and Pro-Blockchain Developer, I bring over 10 years of hands-on experience as a solution architect and technical lead. Specializing in blockchain, NFT, and cryptocurrency solutions for web and mobile applications, I ensure impeccable-quality products tailored to your audience's needs. I excel in effective client communication, thoroughly understanding project requirements to deliver high-quality work efficiently. Leveraging decades of independent software experience, I provide quick and effective solutions. Expertise: - Blockchain Technology (NFT marketplace, Defi/Dapp Development, Smart contracts, Ethereum ERC721/ERC1155, staking, time lock contracts) - Cryptocurrencies API (BTC, ETH, LTH), Wallets API (Trezor, Metamask, Connect wallet, Anchor, Scatter), Exchanges (Uniswap, PancakeSwap, SushiSwap, Coinbase, Binance) - Blockchain Networks (EVM-based chains, EOS-based chains, COSMOS, Polkadot parachains) Back-End Tech (Python: Django, Flask, Node: Next.js, Loopback, Express, Rust, GoLang, Java EE, Spring) - Front-End Tech (Mockups: Mockplus, Balsamiq, UI/UX: Adobe XD, Photoshop, Illustrator, Figma, HTML5/CSS3, JavaScript/jQuery, Bootstrap5, JS frameworks: Angular, React with Typescript/JS) - Databases (MySQL, PostgreSQL, MongoDB) - Hosting Platforms (AWS, Microsoft, Digital Ocean) - Payment Gateways (PayPal, Stripe) My commitment is to deliver tailored solutions that elevate your projects to new heights.
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Responsive Design
    Web Design
    Web Development
    NFT Minting
    NestJS
    Amazon Web Services
    Blockchain Architecture
    Node.js
    Angular
    React
    WordPress Theme
    Smart Contract
    WordPress e-Commerce
  • $25 hourly

    • 5.0/5
    • (19 jobs)
    Welcome to my profile! I don't believe in broken promises and underperformance. I'm solely concerned with outcomes. So, if you're seeking an expert who can deliver actual results, I'm the right person for the job. I've solved numerous business problems and developed successful applications throughout my career. In the blockchain space, I’ve helped clients increase FUNDS, TRAFFIC, and ENGAGEMENT with users through development and marketing. Check some of the projects below that I helped with. The below-listed projects can also be found in my ‘portfolio’ section. - ASTRA GUILD (P2E Gaming Guilds) (8.3M) - CELADON COIN (8M+) - EAGLE MINING NETWORK (8.2M+) - CRYPSENDO TOKEN (4M+) ⭐ Why you should choose me over other freelancers ⭐ ✅ Client Experience: I focus on providing value to all my clients and earning their TRUST. ✅ Over-Delivering: This is core to my work as a freelancer. My focus is always on giving more than what I expect to receive. ✅ Love for Technology: Give me any problem that revolves around technology and I will bring out a solution for that problem. 🏆 Reviews and feedback from high-profile clients 🏆 The client reviews below (also in my work history section) describe the quality of work and value that you can expect from working with me. ⭐⭐⭐⭐⭐ "It was amazing to work with Nishant and team Bitrix Infotech - Very flexible, extremely available and responsive, and creative - We will work with him again for future projects and we highly recommend him!" - Harrison Schick, NuminaS ⭐⭐⭐⭐⭐ "I had a great experience working with Nishant on this project. He is dedicated and I appreciate the efforts he put into this. I am overall happy with the experience, I highly recommend him." - Parul Sanghera, UBi I have been developing products for the last 7 years and I can help you out in the following areas: ✅ Blockchain - ERC20, BEP20, Polygon, Tezos, BTC, BSC, Solana, ICO, NFT Marketing, Token Launch, NFTs, Lazyminting, Hardhat, Smart Contract, DAOs, DeFi, CrowdFunding, Crypto Wallet, Web3, Solidity, Tokenomics, PitchDeck ✅ Frontend - HTML, CSS, Javascript, jQuery, Bootstrap, Tailwind CSS ✅ Backend - NodeJS, PHP, Code-igniter, and Laravel ✅ Mobile - Android Development(Java/Kotlin/Jetpack Compose), iOS Development(Swift/SwiftUI), and Flutter(Dart) ✅ Game Development - Unity ✅ Database - MongoDB, MySQL, SQLite, Realm Database ✅ Web Server - NGINX, Apache HTTP Server ✅ UI/UX Designing ✅ Content Writing ✅ Digital Marketing - Affiliate, Influencer, Social Media, SEO ✅ Ongoing Development Support and Maintenance --------------------------------------------------- ABOUT MY COMPANY BITRIX INFOTECH: --------------------------------------------------- ● INTEGRITY IN EXCELLENCE above all things: Excellent work, on time, every time. We only take on projects we are certain we can knock out of the park. ● Over 10 Upwork project invites DAILY + other inbound. We have to choose new clients carefully. We have a waitlist. (This is not a sales tactic. It is reality.) ------------------------------------------------- WHAT WE LOOK FOR IN A NEW CLIENT: ------------------------------------------------- ● Open mind, relaxed attitude ● Values integrity & relationships ● Focused on improving, lets their actions speak louder than words ● Knows our minimum scope, and wants the BEST -------------------------------------------------------------------------------- THE THINGS THAT YOU WILL LOVE WHEN YOU WORK WITH US: -------------------------------------------------------------------------------- ● Daily Report on your project. ● Detail Oriented Personality. ● Deliverables will be designed for ease of use for end-user. ● You are in charge, I will suggest the best possible solution or all the possibilities. But work will be as per your instructions. ● Flexible working hours & always available for communication. ● If you are a technical person, you will find all code clean, robust, and well-commented as per the standards. ----------------------------------------- MY QUALITIES: ----------------------------------------- ● Fluent in English ● Available for the meeting at your best time (with a pre-scheduled meeting) via chat/call/video ● Can start to work immediately ● Great with Deadlines & Quality So, how do we proceed from here? It’s vital to establish a connection to see if we’re an excellent fit to work together. 🤝 Click “HIRE NOW” to get started and I’ll schedule the call for us. PLEASE NOTE:- I only work with the business owner for the project. If you’re not the owner, I’ll need to speak to them first. Speak soon, Nishant
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Initial Coin Offering
    Crypto Wallet Development
    Smart Contract Development
    Mobile App Development
    React
    WordPress
    UI/UX Prototyping
    Web Design
    Blockchain, NFT & Cryptocurrency
    Web3
    Game Development
    Web Development
    Laravel
    PHP
    Node.js
  • $50 hourly

    • 5.0/5
    • (42 jobs)
    I'm Iqbal Singh, a dynamic Full Stack Blockchain Developer and Solutions Architect with a keen focus on Web 3 technologies. My expertise spans across various domains including dApps, NFT, Crypto Trading Bots and DeFi Smart Contract Development. Currently, I'm on a mission to elevate my skills further by pursuing a PhD in AI. Alongside, I'm deeply involved in an exciting AI-driven project that revolves around body sizing measurements integrated with e-commerce platforms. KEY SKILLS I POSSESS: ------------------------------ ✅Decentralized Applications (dApps) development ✅Token Expert ✅Smart Contract Development (​ Tokens | NFTs | DAOs | Flash Loan | Arbitrage | and more... ) ✅Smart Contract Auditing ✅DeFi platforms, covering liquidity pools, borrowing/lending, staking, and farming platforms ✅Crypto Wallets Development ✅NFT Marketplace Development ✅NFT Minting Consultation ✅Crypto Trading Bots ✅EVMs Expertise ✅Parachains ✅PyTeal ✅Web3.js ✅Ether.js Exchange Operations ✅Centralized Wallet ✅Centralized spot Trading Exchange ✅Centralized Futures Exchange ✅Centralized P2P Trading ✅Centralized Marginal/Leverage Exchange ✅Centralized Options Exchange ✅Decentralized Exchange with Order Book on Multiple Chains ✅Non-custodial Wallet development Own Blockchain Solutions ✅Complete Custom Blockchain Development (Wallet, RPC commands, Explorer) ✅Cloning Existing Blockchain ✅Consensus Changes in Hard Forks ✅Cryptocurrency Development ICO and Token Launches ✅Token Development over multiple chains ✅ICO Dashboard Development ✅Reflection token Development ✅Deflationary Token Development ✅IDO Dahsboard Deveelopment Public Blockchains: ✅ EVM Based Chain (Ethereum and more) ✅ Binance Smart Chain ✅ Solana ✅ Polygon ✅ EOS ✅ Tron ✅ Cardano ✅ Private Blockchains ✅ Corda ✅ Hyperledger Fabric OTHER SUPPORTING KEY SKILLS: ✅ Blockchain Tools: Ethereum, Solidity, Web3, Metamask, Uniswap, Pancake frontend fork, DEX, DeFi, Bitcoin, BEP20, ERC20, and more. ✅ Languages: JavaScript, TypeScript, Solidity, PHP. ✅ MERN Stack Proficiency (Node.Js, Express.Js, React.Js, MongoDB) ✅ Languages: Solidity , Python, Cadence, Rust , C++ ✅ Blockchain and Web3 Development - Web3.js , Node.js , React , Truffle , Ganache , MetaMask, ✅ Smart-contract development ✅ DeFi platforms, Crypto wallets, NFT Marketplaces ✅ Version Control: Git (GitHub, Gitlab, Bitbucket). ✅ Databases: MySQL, MongoDB, PostgreSQL. ✅ Cloud Platform : AWS , Azure , GCP Drop me a message, and let's discuss how I can help you achieve your goals. Sincerely, Iqbal Singh
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    Ethers.js
    Smart Contract Development
    web3.js
    Solidity
    Hardhat
    Truffle
    Ethereum
    Utility Token
    Crypto Wallet Development
    Launchpad
    Blockchain, NFT & Cryptocurrency
    Chatbot Development
    NFT Marketplace
    DeFi
    DApp Development
  • $19 hourly

    • 3.9/5
    • (57 jobs)
    I am a software engineer, Blockchain developer, and web developer,I am a writer also ,I like to write travelogue and stories, I have done Translation job also. Smart Contract Audit GoLang C C++ Jquery Nodejs MongoDb Docker IPFS Swagger java Solidity Web3 Cryptography Mocha /chai /sinon unit testing Git/Github Requirejs Ethereumjs Bug fixing with blockchain wallet integration Using Restful webAPI and integrate into blockchain Using RPC/JSON server and adding into blockchain Creating fully functional cryptocurrency exchange
    vsuc_fltilesrefresh_TrophyIcon Blockchain
    React Native
    Database
    Solidity
    Smart Contract
    Creative Writing
    DApps
    Solidify
    Front-End Development
    React
    HTML5
    MySQL
    Node.js
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How to Hire Top Blockchain Developers

What is a blockchain developer?

From cryptocurrencies to initial coin offerings (ICOs), smart contracts, and supply chains, the blockchain promises better security, transparency, and accountability to the business world. If you’re looking for a freelancer who can help you implement your own blockchain, consider hiring a blockchain developer.  

How do you hire a blockchain developer?

You can source blockchain developers on Upwork by following these three steps:

  • Write a project description. You’ll want to determine your scope of work the skills and requirements you are looking for in a blockchain developer.
  • Post it on Upwork. Once you’ve written a project description, post it to Upwork. Follow the prompts to help you input the information you collected to scope out your project.
  • Shortlist and interview blockchain developers. Once the proposals start coming in, create a shortlist of the candidates you want to interview. 

Of these three steps, writing your project description is the most important. It’s where you will determine your scope of work, the specific type of blockchain developer you need for your project, and your budget.

How much does it cost to hire a blockchain developer?

Rates can vary due to many factors, including expertise and experience, location, and market conditions.

  • An experienced blockchain developer may command higher fees but also works faster, has specific areas of expertise, and delivers higher-quality work.
  • A contractor who builds a client base may price services more competitively.

Rates charged by blockchain developers on Upwork are:

  • Beginner: $30 per hour
  • Intermediate: $45 per hour
  • Advanced: $59 per hour

Why hire a blockchain developer?

The trick to finding the best candidate is to identify your needs. 

  • Blockchain developers can assist with technology integration into business processes. This can lead to the improvement of operational efficiency and productivity. 
  • Experienced specialists can help develop hack-proof apps or platforms to guarantee fast and safe exchange of digital currencies. 
  • Experts in blockchain technology are always up-to-date with the latest trends. This allows them to build effective strategies for their clients to achieve short and long-term goals. 

Why blockchain matters

First, what is blockchain? In short, it is a distributed database designed to ease transactions and keep track of assets. This may seem like a straightforward goal, but it is a problem for consumers, businesses, financial institutions, and governments.

These inefficiencies can slow down the pace of business, leading to lost revenue for individual companies and lower growth for the economy as a whole. Blockchain has the potential to solve many of these problems.

Blockchain developer FAQ

How do you write a blockchain developer job post?

Your job post is your chance to describe your project scope, budget, and talent needs. Although you don’t need a full job description as you would when hiring an employee, aim to provide enough detail for a contractor to know if they’re the right fit for the project.

Job post title

Create a simple title that describes exactly what you’re looking for. The idea is to target the keywords your ideal candidate will likely type into a job search bar to find your project. Here are some sample blockchain developer job post titles:

  • We are looking for a seasoned blockchain developer 
  • A junior blockchain developer is needed
  • A fintech company is looking for a blockchain DevOps engineer

Project description

An effective blockchain development job post should include the following: 

  • Scope of work: List all the deliverables you’ll need, from smart contracts to supply chains.
  • Project length: Your job post should indicate whether this is a smaller or larger project.
  • Background: If you prefer experience working with productivity tools, blockchain protocols, or other technologies, mention this here.
  • Budget: Set a budget and note your preference for hourly rates vs. fixed-price contracts.

Blockchain developer responsibilities

Here are some examples of blockchain developer job responsibilities:

  • Research, design, and test blockchain technologies 
  • Work with the development team and project managers to architect the necessary infrastructure
  • Ensure data configuration follows security protocols, privacy documents, and other requirements. 

Blockchain developer requirements and qualifications

Be sure to include any requirements and qualifications you seek in blockchain development. Here are some examples:

  • Programming languages such as Solidity (for Ethereum), C++, Java, JavaScript, etc.
  • Popular blockchain development platforms such as Ethereum, Hyperledger, etc.
  • Database languages such as SQL
  • Application-specific knowledge (e.g., cryptocurrencies, smart contracts, ICOs, etc.)

Ready to integrate advanced technologies into your business process? Hire the best blockchain developer on Upwork today!

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