The Best Solidity Freelancers For Hire In the United Kingdom

Check out Solidity Freelancers in the United Kingdom with the skills you need for your next job.

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$50 hourly
- 4.9/5
- (22 jobs)
Hi, I'm Fasih, a full-stack JavaScript and Solidity developer with over 5 years of experience in developing and deploying scalable, reliable, and robust web applications. I'm also an AWS Certified Solutions Architect - Associate. My skillset includes:- Frontend: - React, Redux - TypeScript & JavaScript - Apollo Client - Material-UI, Tailwind CSS, AntD - Bootstrap - HTML5, CSS3, ES5, 6, 7+ Backend: - NodeJS, monolith & Serverless - Database Concurrency - Production System Stability - NGINX - Backend Architecture: Client-Server, Producer-Consumer. - MongoDB Optimisations - Web hooks - REST API, GraphQL - Mongoose - Docker Deployments - Firebase DevOps: - Automated Deployment Pipeline with AWS CDK: CI/CD, Auto-rollback, Canary, Staging, Prod, Manual Approval, Slack Notifications. - AWS Services: Lambda, API Gateway, CloudFront, AWS KMS, IAM, S3, Cognito, CodePipeline, EC2, SES, SNS, SQS, ELB, and similar ones for running a large-scale workload. Databases: - NoSQL: MongoDB, DynamoDB, Firestore, Firebase Realtime DB - SQL: MySQL, PostgreSQL, Aurora, AWS RDS - Database Design Software Engineering: - Requirements, Modelling, Design, Testing - Version control: GIT, SVN - Methodologies: Scrum, agile I have stellar work ethic, quick learning ability and fast adaptability. I am a team player and I always put in new ideas. Always looking to learn, I can adapt to your specific needs. With a commitment to always provide efficient, accurate, cost-effective, and on-time solutions, I ensure my clients' satisfaction. Looking forward to working with you!

Solidity
GraphQL
Stripe
React
Amazon Web Services
AWS Lambda
Truffle
Firebase
RESTful API
Amazon API Gateway
Amazon S3
Node.js
Ethereum
web3.js
Smart Contract
$40 hourly
- 5.0/5
- (6 jobs)
This is Rohan, Business Manager of TAFSOL TECHNOLOGIES Group!! 🎯 Aiming to deliver $10M+ Projects in 2023-2024 28th profound member of the OpenJS Foundation among other tech giants including Google, Microsoft, IBM, Uber and Coinbase, etc. TAFSOL Technologies is an Award-Winning Digital Agency Recognized by Clutch. co and Manifest as: 1. TOP B2B (Business-to-Business) SERVICES by Clutch. co in the Mobile App Development category. 2. MOST REVIEWED COMPANIES by The Manifest in the Software Development category. Our team of skilled professionals has extensive experience in providing a wide range of digital services such as: ✅ Logo Designing to give your business a Brand Identity ✅ Graphics Designing to make your customers fall in love with ✅ Website Design and Development that tells your business story and sells your products/services globally ✅ Mobile App Design and Development to make your business available at your customers' fingertips ✅ CRM Design and Development to effectively manage your customers ✅ SAAS-based platform Design and Development to streamline your business processes and increase efficiency ✅ ERP solutions Design and Development to integrate all business operations and provide real-time insights ✅ Blockchain Development to create decentralized platforms, decentralized applications (dApps), and smart contracts based on Blockchain networks, Ethereum, BSCSCAN, Solana, Polygon, etc. At TAFSOL, we understand that having a strong online presence is crucial to the success of any business. That's why we take a comprehensive approach to our services, ensuring that every aspect of your digital presence is optimized for maximum impact. From creating eye-catching logos to developing fully-functional and user-friendly websites, web apps, and mobile applications. What we Offer: ✅ 100% Client Satisfaction Rate ✅ 200+ Years of Accumulated Team Experience in IT Services ✅ 1000+ List of Satisfied Clients ✅ 100+ In-house Resources ✅ 42+ Countries in Which Our Clients are Based ✅ Quick Response Time of less than 2-3 Hours ✅ 5 Star Rated Profile Across All Platforms ✅ Dedicated Project Managers with Fluent English ✅ Support Services are available 5 days a week in EST, PST, MST, and GMT time zones. ✅ Physical Presence in the UK, USA, and PK Let's start chat here on Upwork.com so we can discuss your requirements in detail and share our ideas with you. You can also google us “Tafsol Technologies” and enjoy exploring more about our amazing services and reviews. Thanks for Visiting our Profile!!

Solidity
NestJS Development
NFT
Material Design
Blockchain Development
ERC-20
NFT Design Customization
Storybook
ERC-721
MERN Stack
Smart Contract
Next.js
JavaScript
TypeScript
$65 hourly
- 5.0/5
- (8 jobs)
I am a developer with a wide skill set. I completed covered a huge range of projects from web applications to mobile apps to smart contracts to Desktop applications and more. I now have over 5 years experiene of programming. My skills include but are not limited to: ⭐️Javascript/TypeScript/Solidity/Python/Go ⭐️React/React Native ⭐️SQL/MongoDB ⭐️HTML/CSS/TailWindCSS ⭐️AWS What can I help you with ? ⚡️General scripts ⚡️Automation scripts. ⚡️Web scraping scripts ⚡️Web apps ⚡️Mobile apps ⚡️Database work ⚡️Dekstop applications ⚡️Chrome Extensions ⚡️Smart Contracts ⚡️Integrating web3 into websites

Solidity
Automation
Google Chrome Extension
Discord
HTML
ExpressJS
Front-End Development
Database
API
React
TypeScript
Python
React Native
Amazon Web Services
JavaScript
$40 hourly
- 5.0/5
- (8 jobs)
I am a highly experienced and certified full stack developer with more than 10 years of experience. I have extensive knowledge in creating awesome and interactive web applications. I am a problem solver and ready to brainstorm ideas that create solutions. I have also worked as a team manager, overseeing development projects from conception to completion. My ability to manage teams and delegate tasks has contributed to the successful delivery of high-quality projects on time and within budget. I am also proficient in solving all challenges that I come across. ----- Main Stacks ----- Front-end : React, React native, Redux, Next.js, TypeScript, Vue.js, Nuxt.js, JQuery, Bootstrap, Material UI. Back-end : Node.js, Express, Nest.js, Flask, Django, PHP, Laravel AI: OpenAI, Stable Diffusion, LLM Database : MySQL, MongoDB, PostgreSQL

Solidity
Web3
Blockchain
NestJS
TypeScript
Nuxt.js
Vue.js
ExpressJS
Node.js
Next.js
JavaScript
Flask
Python
Django
React
$50 hourly
- 5.0/5
- (4 jobs)
Hello! I'm Asif, a highly skilled Full Stack Blockchain Developer with over 10 years of experience in the technology industry, including a decade specializing in blockchain development. My career is marked by a proven track record of delivering over 100 successful blockchain projects for both startups and Fortune 500 companies, driving innovation and efficiency across various sectors. I have a comprehensive understanding of the blockchain ecosystem, with expertise spanning smart contract development, decentralized application (DApp) creation, and full-stack blockchain architecture. I excel in using platforms such as Ethereum, Hyperledger, and Binance Smart Chain, ensuring that your projects leverage the best available technology. Why Hire Me: 1. Over 10 years in technology and 10 years in blockchain development. 2. Delivered 85+ blockchain projects, including solutions for Fortune 500 companies. 3. Proficient in Ethereum, Hyperledger, Binance Smart Chain. 4. Implementing best practices for secure and compliant blockchain development. 5. Committed to staying at the forefront of blockchain advancements to deliver state-of-the-art solutions. Skills and Services: 1. Crafting secure and efficient smart contracts using Solidity, 2. Building user-friendly and scalable decentralized applications. 3.:Designing robust blockchain solutions tailored to your business needs. 4. Creating engaging and intuitive user interfaces with React.js 5. Developing powerful back-end systems using Node.js. 6. Tokenization and NFTs: 7. Seamlessly integrating blockchain technology into existing systems. Let's connect and discuss how I can help turn your blockchain vision into reality, providing you with a competitive edge in today's rapidly evolving digital landscape. Keywords: Solidity, Etherium, Dapp, Defi, Decentralized, Crypto wallet, smart contract, blockchain dev, Web3

Solidity
Ethereum
Decentralized Exchange
DeFi
Web3
Blockchain Architecture
Blockchain Development Framework
Layer 2 Blockchain
Blockchain, NFT & Cryptocurrency
Blockchain Tokenization
Blockchain Security
Blockchain
Crypto Wallet Development
Smart Contract
Blockchain Development
$50 hourly
- 4.9/5
- (32 jobs)
Hamza is a passionate software engineer with a track record of taking large-scale web applications from the drawing board to production. He developed the world's first web-based multi-threaded setup ceremony that leverages Rust and WASM to run cryptographic functions. He has extensive front-end knowledge using JavaScript, browser APIs, React, WASM, TypeScript, and Rust. In the back end, he excels with Node.js, Solidity (Ethereum), and web3 development. He is also an avid blockchain developer and has worked on multiple leading edge web3/Ethereum projects such as Aleo, radixdlt and NFT projects (kgpnft, skulz). Ethereum tools that he is familiar with are: Solidity, Hardhat, chainlink, polygon and aave He quickly realised after a few years that the companies he worked with were looking for much more than just an engineer. He figured out that most of his client's wanted someone who they could trust as a technical partner for their products. Someone, who can give suggestions right from what tech should be picked up, how to get the roadmap right, how should we plan the product launch, and a lot more. He loves to speak with people, help them find the perfect solutions for their problems, and help bring their ideas to life. As of today, He always strives to keep the quality high and every request is considered with extraordinary care.

Solidity
Smart Contract
web3.js
Webflow
Ethereum
NFT
AWS Lambda
Node.js
React
GraphQL
Web Development
TypeScript
Rust
JavaScript
Responsive Design
$40 hourly
- 4.8/5
- (18 jobs)
React, React Native, Vue, Angular, Node and Express. Excellent Result After Best Service! One home run is much better than two doubles. I am a competitive, passionate, ambitious Frontend React developer, who is always eager to improve and learn new technologies, and welcome challenges. I am working as an individual full-time developer now and seeking my career as a freelancer. I enjoy working with passionate people on exciting react projects. I always respect my clients, always take full responsibility for my work, and am never afraid of criticism. Looking forward to building a long term relationship with ambitious clients. And I am usually around during US business hours.

Solidity
Blockchain
React Native
Firebase
Apollo.io
AWS Lambda
Vue.js
ASP.NET
Node.js
Azure DevOps
Angular
AWS Amplify
Gatsby.js
ExpressJS
React
$90 hourly
- 5.0/5
- (26 jobs)
Hey! I'm Vlad, a technologist, tech architect and founder of the London-based TGR tech Agency. What started as an enthusiasm for Web3, quickly expanded into an all-encompassing emerging tech agency. Now, TGR touches every corner of emerging tech, from AI and Web3 to AR and biometrics. With 60+ projects under our belt across 15 countries, we're not just about numbers; we're genuinely passionate about assisting businesses to understand, build, and integrate these groundbreaking technologies. Our tech stack includes industry-leading tools like OpenAI, GPT-3, ChatGPT, TensorFlow, Dialogflow, Pinecone, Vector, Python, React, Vercel, Javascript, MySQL, RASA, Restful API, MongoDB, Solidity, Rust and so much more. Avatar/3D/AR design/tech stack is mainly: Blender, Maya, Babylon JS, Three JS, Unity, Unreal, and Elevenlabs. Got tons of experience building complex tech products: ― Slam Girl AI chatbot, a superhero character created by Stan Lee. She was fine-tuned on a version of ChatGPT and is capable of answering a vast array of questions about superheroes. ― Built MassageBook AI Bot, which is connected to 40K+ vendors in the US. Helped the business reduce customer support costs by 30%. Helps users choose the service they need in under 1 minute. ― One of our recent successes was launching Pangeapass, a smart identity verification app that uses AI to scan e-documents through NFC technology and identify e-chip locations. ― Developed a Web3 marketplace (Stadio Labs) with $1m VC-backed funding and integrated physical utility features for the NFTs Would love to help you with your next project! If there is anything you would like to discuss, feel free to DM me here to get started. Happy to meet for coffee in London, in case you are based somewhere close by! 🙌

Solidity
Smart Contract
Blockchain Architecture
Ethereum
Blockchain Development
NFT
Marketing Analytics
Music NFT
NFT Marketplace
Ecommerce Website
Blockchain, NFT & Cryptocurrency
Conversion Rate Optimization
$45 hourly
- 5.0/5
- (7 jobs)
Develop trading strategies using quantitative or machine learning. Data visualization to complement trading algorithms (Matplotlib, Bokeh) Data mining, cleaning, resampling/grouping is a weekly activity. IG market API Interactive Brokers API Binance API (Python, Solidity) ProRealtime code (ProScreener, ProBuilder)... I use them for my strategies. Python Libraries: Pandas, Numpy, Sci-py, Requests, Sklearn, Threading, Teras...

Solidity
Cryptocurrency
API
Statistics
Data Analysis
Data Visualization
Machine Learning
Linear Regression
Microsoft Power BI
Python
Microsoft Excel
pandas
NumPy
$40 hourly
- 5.0/5
- (4 jobs)
I am a certified professional Blockchain Developer with vast years of experience in Blockchain development with expertise in integrating third-party APIs in web3 and Blockchain Dapps. Frontend Development(HTML, JavaScript, CSS, Bootstrap, jQuery) JavaScript libraries (React.js, Vue.js, Angular.js) JavaScript Backend Framework(Node.js, [login to view URL]) PHP Framework(Laravel, CodeIgniter, WordPress) Database(MySQL, MongoDB, Firebase, PostgreSQL) Web Design My Blockchain Specialisation Areas: ✅Smart Contracts development using Solidity ✅Web3 integration ✅Unit testing and testing using test nets such as Ropsten and Goerli networks. ✅Metamask wallet integration ✅NFT Minting DApps and marketplaces (Polygon, Avalanch, Ethereum, Solana, Binance, )In-depth knowledge of ERC20 & ERC721 Smart Contracts ✅Deployment to the main net using Infura. ✅NFT contract ✅Token/ coin Contract ✅DeFi platforms (any dApp, Binance Smart Chain, Ethereum, EOS, Tron) ✅ICO Applications ✅Token on standards- ERC 20, ERC 721, ERC 721A, ERC1155, BEP20. Token on standards- Spl tokens ✅Web Development for Custom Business Web Applications ✅Front-end and Back-end Development ✅Content Management Development ✅Stock exchanges (like Binance, Coinbase, etc) ✅Wallets (crypto/fiat) ✅Blockchain block explorers ✅High-End Enterprise Web Applications ✅Develop Custom RESTFUL APIs For Mobile Applications ✅Blockchain Development ✅Defi EXchange ✅BEP1155 ✅Truffle ✅NFT minit ✅Open sea minting Frameworks & Tools we can use : ✅React for UI ✅Ether JS ✅Hardhat ✅MetaMask Wallet Integration ✅Mocha and Chai tests. ✅Moralis ✅Dapp ✅Defi ✅BSC I have a high standard of creativity in Art creation and NFT collections. ✅NFT Concept and Art ✅NFT 2D Artwork ✅ NFT Art Creation | 2D, 3D, Anime, Pixel Art. ✅ Generative art and collections (10,000 NFTs) ✅NFT 3D Artwork ✅NFT Animations ✅NFT 3D Animations ✅NFT Design from scratch ✅Motion NFT Kindly connect with me if you are looking for these services or let me know if you have any questions, or would like to get into consultation with me. Thanks for reading Best Regards

Solidity
Website Redesign
WordPress
JavaScript
Web Application
API Integration
Blockchain, NFT & Cryptocurrency
React
Smart Contract
NFT Marketplace
DApp Development
Cryptocurrency
NFT Minting
NFT Collection Generation
$60 hourly
- 5.0/5
- (17 jobs)
My name is Mayur Kale, and I am a Senior Full-Stack Engineer in London, UK. I've successfully delivered software systems for various organisations for over ten years. I am now a hands-on developer CTO for building for clients based UK/US & UAE. I'm a highly skilled and experienced Full Stack Developer specializing in a wide range of technologies including Typescript, Java, React, Node.js, MongoDB, NoSQL, NestJS, Solidity, Smart Contracts, and Blockchain. With a strong foundation in both front-end and back-end development, I offer comprehensive solutions that drive efficiency, performance, and innovation. In addition, my website design and development skills are solid with expertise in React native, CSS, Webflow and Figma. Here's what I bring to the table: ✅ Full Stack Proficiency: I excel in both front-end and back-end development, allowing me to seamlessly integrate and deliver end-to-end solutions. I'm adept at developing responsive and intuitive user interfaces using React and leveraging the power of Node.js to build robust server-side applications. ✅ Typescript and Java Expertise: I have extensive experience in Typescript and Java, enabling me to develop scalable and maintainable applications. I leverage the latest frameworks and libraries to ensure clean code architecture and optimal performance. ✅ React Mastery: With my deep understanding of React and its ecosystem, I create dynamic and interactive user interfaces that provide an exceptional user experience. I'm well-versed in modern front-end practices such as state management, component-based architecture, and UI testing. ✅ Database Proficiency: I have hands-on experience working with MongoDB and NoSQL databases, ensuring efficient data storage and retrieval. I understand the importance of data integrity, performance optimization, and database design principles. ✅ NestJS and Solidity: I'm skilled in using NestJS, a powerful framework for building scalable and modular server-side applications in Node.js. Additionally, my expertise in Solidity allows me to develop smart contracts for decentralized applications, ensuring security and transparency on the blockchain. ✅ Blockchain Integration: I have a strong understanding of blockchain technology and its potential for revolutionizing industries. I can assist in integrating blockchain solutions into existing systems or building decentralized applications from scratch. If you're seeking a dedicated and talented Full Stack Developer with expertise in Typescript, Java, React, Node.js, MongoDB, NoSQL, NestJS, Solidity, Smart Contracts, and Blockchain, I'm here to bring your vision to life. Let's discuss your project requirements and create innovative solutions together. Let's get to work. Mayur Kale

Solidity
Blockchain
API
Microservice
DevOps
Spring Framework
React
NoSQL Database
Initial Coin Offering
React Native
Web Development
Database
Node.js
JavaScript
Java
$45 hourly
- 5.0/5
- (1 job)
Hello, I am a blockchain and metaverse developer with years of rich experience. Well-versed in smart contract dev and web3 technology on EVM and Solana. These are my services: 1. NFT crypto website, NFT mint, staking, reward, NFT game, NFT marketplace, etc 2. ERC20/Bep20/TRC20 token, web3 & smart contract 3. ICO, IDO, IFO 4. Cryptocurrency trading and arbitrage bot 5. Customized DEX and Defi 6. DApps and smart contract on Ethereum, Solana, Cardano, Near, Algorand, etc 7. Betting, Play to Earn 2D/3D Game 8. Web and mobile app development(Frontend and backend) I am ready to go and will start working right away for your business success. Please feel free to reach out to me if you have any projects or new job opportunities. Best Regards

Solidity
Crypto Exchange Platform
Cryptocurrency
DApp Development
Blockchain
Game
Rust
Ethereum
Smart Contract
Web3
Metaverse
NFT
Solana
DeFi
JavaScript
$50 hourly
- 5.0/5
- (3 jobs)
With a robust seven-year tenure in web development, I am a Senior Software Engineer specializing in building and enhancing web applications. My career has been enriched by collaborations with innovative startups and medium-sized companies, allowing me to develop a deep understanding of product development and business growth strategies. ❇️ Expertise in Web Application Development: ❇️ ✅ Minimum Viable Product (MVP) Development: Skilled in conceptualizing and building MVPs from the ground up, ensuring rapid deployment and market feedback. ✅ Front-end Technologies: Proficient in creating responsive and dynamic user interfaces using React and Next.js, coupled with extensive experience in state management using Redux. ✅ Back-end Development: Adept in developing robust server-side applications with Node.js and Express, along with Python and Django for high-performing, scalable solutions. Experienced in PHP for diverse project requirements. ✅ Cloud Services and Database Management: Skilled in deploying and managing applications on AWS, with a strong understanding of GraphQL. Expertise in database technologies including MySQL, MongoDB, and PostgreSQL. ❇️ Design and User Experience: ❇️ ✅ UI Frameworks: Proficient in Material-UI, Tailwind CSS, and Bootstrap for crafting aesthetically appealing and functional user interfaces. Quality Assurance: Committed to delivering high-quality products through rigorous testing using Jest, Enzyme, React Testing Library, and Cypress. ❇️ Career Objective: ❇️ As I venture into new industries, my objective is to leverage my comprehensive skill set and rich professional experience to significantly contribute to your product development. I am dedicated to creating solutions that align with technical requirements while driving business success and enhancing user satisfaction.

Solidity
Web3
Redux
Django
Python
Nuxt.js
TypeScript
Next.js
Gatsby.js
Vue.js
PHP
GraphQL
JavaScript
React
$50 hourly
- 5.0/5
- (2 jobs)
DEFI | Cryptography | zkEVM | Cosmos SDK | Metaverse | P2E game | Gambling | NFT | | DEX | Solidity | Rust | Hardhat | Truffle | Web3.js | Ether.js | React | Next.js | Node.js | Typescript | PHP | AWS | eCommerce | Frontend | Backend | Python | AI-ML Senior Software Engineer with a high-level educational background in computer science, and professional work experience in design and development from scratch, maintenance, pro-coding style, code review, and testing. I love coding and challenging new technologies, and as a problem solver, I come up with creative and effective ideas to meet deadlines. My services: ✅Full Stack Web Development ✅Blockchain Development: New Blockchain, DEFI, NFT mint, staking, marketplace, DEX, Crypto Wallet, Play to Earn game, Lending, and Borrowing, etc. ✅Customized CRM / ERP ✅Database Management & Development ✅Hosting and Cloud management ✅Development of various bots ✅Integrations of Softwares & IT Security Implementations ✅OpenAI and ChatGPT integration, AI model implementation. My Skills: ✅Blockchain: Solidity, Rust, Move, Web3.js, Ether.js, Wagmi, AlchemyAPI, Infura, Chainlink, Proxy(Transparent/UUPS) ✅Frontend: React, Angular, Vue.js, Next.js, Nuxt.js, Redux, Sass, TailwindCSS, MaterialUI, ChakraUI, Antd, Vuetify, Typescript, ES6/ES7. ✅Backend: Node.js(Express.js, Nest.js), Python(Django), PHP(Laravel, Symfony, CakePHP, Yii) ✅Database: MongoDB, MySQL, PostgreSQL ✅CI/CD: Git, Docker, Azure Devops, Trello, Slack, Jira, AWS, Heroku, Netlify, Firebase ✅Other: Rust, Go, C#, C/C++, Java Thank you for taking the time to review my profile. I look forward to creating good things together. Sincerely, Javan

Solidity
Angular
Web Development
Tailwind CSS
Web3
React
Cryptocurrency
Blockchain
Golang
Python
TypeScript
PHP
Node.js
Rust
Smart Contract
$75 hourly
- 5.0/5
- (8 jobs)
Dynamic Software Engineer with over 20 years of experience: - Solidity, Smart contract Audit, Web3, Foundry, Hardhat - Solana, Rust, Anchor, Token 2022 - HFT, Trading, Forex, MT4, C#, C++, Python - Rust, Go, Cosmos, Blockchain architecture - React, Express, MongoDB, Node.js - AI, Tensorflow, ChatGPT, Python Dynamic Software Engineer with over 20 years of experience, specializing in smart contract development, trading strategies, and AI technologies. Skilled in Solidity for blockchain applications, Python, C++, and JavaScript for trading algorithms, and Rust for blockchain development. Proficient in high-frequency trading (HFT) strategies and AI models for sophisticated solutions. Experienced in designing and implementing secure and efficient software solutions across diverse industries. Motivated by new challenges and dedicated to driving innovation through problem-solving and continuous learning.

Solidity
AI Development
Trading Strategy
ChatGPT
web3.js
Derivatives Trading
Ethereum
Solana
JavaScript
Python
C#
C++
TensorFlow
Golang
Rust
$50 hourly
- 5.0/5
- (1 job)
🌟 Welcome to Your Next Level Solution! 🌟 👏Hello there!👋 I'm your go-to expert with a rich 9-year track record in pushing boundaries in several blockchain ecosystems(Solana, EVM, Polkadot, Cosmos, TON), Frontend development and Web3 integration. 🏆 Core developer of three blockchain communities 👨‍💻 Over 20000 hours of Blockchain and Web development ✅ 40+ completed projects 🥇 NEAR MetaBUILD III Hackathon winner My professional experience includes: 🌍Designed and developed DeFi projects like decentralized exchanges, trading platforms, and bonding mechanisms, as well as creating dynamic NFT marketplaces and interactive NFT games. 🎯Built the dapps and DeFi with expertise in web development from ground up, ensuring its seamless integration and drove the development and leadership of a cutting-edge DeFi protocol that encompasses a decentralized exchange (DEX), bridge, and innovative trading platform. ✨Expertized in smart contract development, with a strong focus on Solana while also utilizing Solidity and Rust for Ethereum and Binance Smart Chain, along with emerging platforms like Polkadot, Cosmos and Near. 🎰Built NFT Marketplaces and Casino game using React, Next.js, Vue.js, Flutter and Node.js, ensuring seamless user experiences. 💦Proficient in developing frontend using JS/TS frameworks like React and Next.js including various projects like e-commerce, financial, education, customer management, real estate, Blockchain area. Why Choose Me? - 🤓 A relentless problem solver, keen on details, and with a knack for spotting patterns where others see chaos. - 🌱 A passionate professional who believes that every project is an opportunity to break new ground. - 🤝 Committed to turning your vision into reality, ensuring that together, we achieve your goals and beyond. Ready to bring the future of Blockchain and Web development to your projects? Let's SET your vision in motion and CREATE something extraordinary. 💫 Feel free to reach out anytime. Let's make your project the next big thing! Thank you for considering my profile. Looking forward to our successful collaboration.

Solidity
Angular
Ink
Polkadot
web3.js
Cosmos OS
Ethereum
Solana
NodeJS Framework
Vue.js
Next.js
React
Rust
Python
$75 hourly
- 5.0/5
- (0 jobs)
I am a highly skilled IT consultant and developer with over 20 years of experience supporting corporations and educational institutions. Throughout my career, I have excelled in managing both in-house and cloud-based systems, specialising in technical support and cloud administration. My expertise spans system creation, development, deployment, and support across various industries, with a strong focus on organising complex systems for optimal success. Having worked in fast-paced environments, I have honed my ability to handle intricate IT infrastructures, whether in local setups or cloud environments like Azure, GCP, and AWS. Additionally, I bring extensive experience in both software and hardware support. I am continually expanding my knowledge in emerging technologies, including blockchain, cryptocurrency, and web3, to stay ahead in the ever-evolving tech landscape.

Solidity
Python
FlutterFlow
IT Management
IT Infrastructure
Blockchain, NFT & Cryptocurrency
Blockchain Tokenization
Layer 2 Blockchain
Cloud Management
IT Consultation
Swift
Web Application
Blockchain Architecture
PHP
JavaScript
$80 hourly
- 5.0/5
- (4 jobs)
I have been working as a technology architect and lead engineer for more than 10 years. I have developed highly complex engineering apps architecture on different blockchains. I am an expert in Finance/Banking platforms, Defi, Smart contracts, Cross-blockchain protocols, Yielding/Farming, Staking protocols, and end-to-end frontend/backend integration. Why Me? ● Passionate meeting aggressive deadline with highest code quality ● Expert in end-to-end Software Development Life Cycle using Agile Development Methodologies ● Free Technical support of 4-6 weeks after releasing the product to the Production ● Available 40+ hrs/week ● Full satisfaction guaranteed I can demo some of the projects I developed from requirements specification to deploying in production including setting up AWS/GCP infrastructure. Expertise: ● Ethereum & Bitcoin blockchains expert ● Cross-blockchains like Polkadot ● Multi-layer blockchains like Matic ● End-to-end Defi protocol development experts including yielding/farming, staking, AMM, liquidity mining ● Experts working with Uniswap, 1inch, and other DEX aggregator protocols ● Cryptocurrency API Integration handling millions of data points from data providers like CoinMarketCap, CoinGeko, and On-chain data ● Decentralised Applications (DAPPs) ● JavaScript/ Typescript Experts - Vue.js, React.js, Node.js, Eather.js, Web3.js

Solidity
Ethereum
API
Cryptocurrency
Research & Development
Blockchain
Smart Contract
React
Angular
MongoDB
Rust
Node.js
Python
$35 hourly
- 4.9/5
- (11 jobs)
I am a programmer with ten years of C++ commercial experience and 3 years of Golang experience. I can assist with Golang projects, particularly Go Ethereum and blockchain development. Alternately I can help you with your desktop applications using QT/QML/Javascript for cross-platform projects or MVC++ for Windows. I have an MPhil in Mathematics. I also recently finished an MSc in Computational Biology. I enjoy software development and I am keen to try out my skills in new areas. I look forward to hearing from you.

Solidity
Ethereum
JSON
SQL
Qt Framework
Golang
QML
Blockchain
JavaScript
C++
$50 hourly
- 4.8/5
- (9 jobs)
I am a full-stack developer with experience in Edtech, FinTech, and HealthTech. I have worked as an individual developer and with scrum teams at startups and enterprises. I have a strong understanding of the JavaScript, Typescript, and React ecosystems, and I am proficient in using libraries and tools like Node.Js, React.Js, Next.js, Express.js, Nest.js, GraphQl, Docker, SQL and NoSQL databases, React Native, CI/CD, and DSA. I am also passionate about the client experience and work to empower my clients so they can achieve their goals with ease. In addition, I have extensive experience in backend development and frontend development, which makes me the perfect candidate as a freelancer full stack developer for your team. In choosing me to be your developer, you can be sure that you are getting someone with the skills, experience, and work ethic needed to get the job done well. ★ FAST, EFFICIENT REACT DEVELOPMENT - React and React Native are my fortes – I can build high-quality React and React Native apps quickly and efficiently. ★ NODE.JS AND GRAPHQL WIZARD - I have a deep understanding of different libraries and tools, such as Node.js and GraphQL, which gives me an edge over other developers. ★ ROBUST API DEVELOPMENT - I have experience with backend development, which allows me to create robust and powerful APIs. ★ 100% CLIENT SATISFACTION - My client engagement skills ensure clients are happy and empowered throughout the development process. ★ PASSION FOR CYBERSECURITY - Finally, my passion for cybersecurity means that clients can trust me to keep their data safe and secure. Backend Development My experience in backend development has given me a deep understanding of problems such as scalability and performance. I've worked with different tools like Express, Nest, SQL databases among others to build monolithic apps that can also take advantage when necessary on Microservices architecture for maximum efficiency by shipping them out into various Cloud hosting solutions including Amazon’s AWS, Google cloud platform GCP or Microsoft's Azure. For a full list of the backend development libraries and methodologies I use, please see below: ⚒ Node.js ⚒ Express.js ⚒ Nest.js ⚒ GraphQl ⚒ TypeORM ⚒ Sequelize ⚒ MongoDB ⚒ PostgreSQL ⚒ MySQL ⚒ SQL ⚒ Jest ⚒ Cypress Frontend Development Frontend development is all about efficiency. When building traditional client apps with blazing fast Html, Css and Js/Ts and React in different flavours (Legacy Class Based, Functional + hooks + Redux, and Next.js), I'm an experienced engineer that can efficiently understand how to use SSR or Lazy loading for performance benefits while keeping up your app's user interface smoothness without any bugs! I've tested these techniques on React applications too where it’s crucial not only delivering high-quality code but also making sure you're using best practices like unit testing frameworks so no story gets overlooked during compilation time. For a full list of the Frontend development libraries and methodologies I use, please see below: ⚒ React ⚒ React Native ⚒ Next.js ⚒ Bootsrap ⚒ TailwindCss ⚒ Html5/Css3 ⚒ Chakra UI ⚒ D3.js ⚒ Snap.js ⚒ SCSS ⚒ Material UI ⚒ Mocha Chai ⚒ Redux ⚒ Redux Saga/Thunk ⚒ Context Api

Solidity
React Native
MySQL
GraphQL
HTML5
CSS 3
React
ExpressJS
DApps
NoSQL Database
Blockchain
web3.js
JavaScript
Node.js
TypeScript
$30 hourly
- 5.0/5
- (4 jobs)
Hi, I'm Zachary, a specialist in Generative AI, Prompt Engineering, and Python Development with a focus on creating innovative, high-quality solutions for text, image, video, and audio/speech-based applications. I bring expertise in leveraging tools like OpenAI's GPT series, MidJourney, RunwayML, and DALL-E to deliver cutting-edge AI-driven experiences. With a Master's degree in Computer Science from the University of Bath and hands-on experience working with clients ranging from startups to FTSE 100 companies, I’m uniquely positioned to meet your AI project needs. What I Offer: Advanced Prompt Engineering for Text, Image, Video, and Audio: Design tailored prompts to generate engaging content, photorealistic visuals, and realistic audio/speech outputs. Experience in tools like ChatGPT, MidJourney, RunwayML, DALL-E, and Leonardo AI for creating dynamic generative content. Generative AI Optimization: Refine and enhance AI-generated outputs to align with brand voice, style, and precision. Develop AI workflows for custom video generation, image retouching, and audio synthesis. Custom AI Solutions: Integrate AI capabilities into your existing systems to automate workflows and boost efficiency. Develop systems using Python and tools like LangChain for scalable, data-driven AI applications. Training and Documentation: Provide comprehensive support for AI integration, including training, technical documentation, and long-term usability guidance. Why Work With Me: Proven Success: Improved user engagement by 20% while integrating OpenAI’s API for large-scale systems used by over 1 million users. High-Profile Clients: Delivered solutions for FTSE 100 companies, enhancing user experience with AI tools tailored to their industries. Versatile Expertise: From AI-generated visuals to text and speech workflows, I’m well-versed in a range of generative AI applications. Recognition: Featured on BusinessInsider and part of the top 1% of talent on Upwork. Key Projects: Generative AI for LMS Systems: Enhanced learning management systems with personalized content generation using OpenAI’s API and fine-tuned models. Photorealistic Visual Creation: Produced high-quality AI-generated visuals for marketing campaigns using MidJourney and DALL-E. Speech Synthesis and Video Generation: Developed pipelines for realistic voiceovers and video content using tools like RunwayML and Synthesia. Automated Query Documentation Tool: Integrated LangChain and Python to streamline complex data queries, improving efficiency by 25%. Tools I Use: Text Generation: OpenAI’s GPT, ChatGPT, LangChain Image Generation: MidJourney, DALL-E, Leonardo AI Video and Audio: RunwayML, Synthesia, Descript Editing and Refinement: Photoshop, Canva, Premiere Pro Let’s Collaborate: If you’re looking for an AI expert to elevate your generative AI projects, I’m here to help. Whether you need prompt engineering, custom workflows, or stunning generative visuals, let’s work together to achieve impactful results. Click 'Invite to Job,' and let’s transform your ideas into reality!

Solidity
Solution Architecture
React
Node.js
Serverless Stack
Firebase
Firebase Cloud Firestore
Web Scraping
Cloud Computing
Python
API Integration
CSV
Twitter/X API
Data Collection
Beautiful Soup
Selenium
Data Scraping
Google Maps API
Amazon Web Services
Data Mining
$50 hourly
- 0.0/5
- (0 jobs)
Hello, My name is Benjamin Jackson. I have over 10 years real work experience in web and about 2 years experience in blockchain development. For the last 10 years, I've built many API backend servers and websites with trending web frameworks. Nowadays, I mainly focus on blockchain development especially on ethereum & solana network. My Skills include solidity, rust, ethereum, solana, smart contract, node.js, nest.js, django, laravel, reactjs, nextjs, vuejs and angular. I can speak and write English fluently, can always be ready for video & voice call. Thanks.

Solidity
Smart Contract
NestJS
Nuxt.js
Python
Django
React
Node.js
JavaScript
PHP
Angular
Next.js
Vue.js
Rust
Ruby on Rails
$35 hourly
- 0.0/5
- (0 jobs)
I am a highly motivated and hardworking developer and data professional with a successful track record of delivering projects. My main interests are blockchain, web3 and database projects, although I have experience working on a wide range of development and data projects. I am an excellent problem solver with exceptional analytical skills. I have successfully certifications in JavaScript, SQL and Python. I have recently successfully delivered web development projects for several small businesses and received excellent feedback.

Solidity
Blockchain Development
Web Development
Cryptocurrency
Blockchain
React
JavaScript
CSS
Python
SQL
Data Analysis
Microsoft Power BI
Data Visualization
Microsoft Excel
Tableau
$70 hourly
- 4.6/5
- (3 jobs)
I am a very talented software programmer with 13+ years of development experience (5+ years professional work experience). I am a results-oriented professional and possess experience using cutting-edge development tools and technology stacks and have high aptitude for designing and implementing new software.

Solidity
Rust
Financial Analysis
React
Cryptocurrency
White Paper
Startup Consulting
Crypto Exchange Platform
Crypto Wallet
Bitcoin
NFT Minting
ICD Coding
NFT Art
Accounting
$50 hourly
- 0.0/5
- (0 jobs)
Hello, welcome Starting from the middle of 2016 began proactively working on blockchain-related projects as a Blockchain software engineer. My experience range from creating both front-end blockchain applications to back-end architecture design and implementation, smart contract development, testing, auditing, and development for Fintech and other industries that need the power of decentralization, tokenization, and smart contracts. Expertise in Public Blockchain Platforms: Solana | Bot Engineer - Developing smart contracts by Rust Programming languages. - Developing RPC using client libraries such as Web3js. - Integration with crypto wallets such as Phantom. Deploying smart contracts on test networks as well as Solana mainnet. - Bot Development on various chain.(Trading bot, NFT bidding bot, betting bot and etc) Expertise in Private & Consortium Blockchain Platforms Hyperledger Fabric - Developing Chaincode using the Go/Rust Programming language - Developing proof of concepts using Hyperledger Composer. - Creating RESTful APIs for client applications to communicate with the blockchain network. ... I hold expertise with: -Solidity / Rust / Golang - JavaScript / React.js - MySQL / MongoDB / PostgreSQL / MSSQL - AWS / DO/ Heroku - GIthub / Gitlab / Bitbucket / Trello / Asana, etc. Here are the applications that I've built so far - Dapp, DeFi development - NFT game/marketplace development on Ethereum & Solana blockchains in Solidity & Rust & Golang - Ethereum & Binance Smart Chain token development on ERC20, ERC721, ERC1155, BEP20, BEP721 & BEP1155 protocols - ICO / ITO / IDO / STO, Cryptocurrency exchange & Cryptocurrency Wallet Development

Solidity
Blockchain
DApps
Bot Development
Blockchain, NFT & Cryptocurrency
Cryptocurrency
Web3
Solana
NFT
Blockchain Architecture
Rust
Ethereum
NFT Minting
DApp Development
Smart Contract
$50 hourly
- 0.0/5
- (1 job)
Recruiter turned web3 developer. Specializing in smart contract development with Solidity. Well-versed in implementing ERC standards such as ERC20, ERC721 & ERC1155 and I like to keep up-to-date with the latest EIPs for best practices. I have built various NFT Marketplaces where bidders can to auction and create custom pricing for their NFTs, built DeFi protocols based on makerDAO, and worked on creating smart contract lotteries using ChainLink to create a random number using VRF. I am proficient with modern day frameworks including Foundry and Hardhat. Experienced in deploying smart contracts across multiple environments including local development nodes (Anvil), public testnets (Sepolia), and Layer 2 solutions (zkSync) Currently learning to develop dApps utilizing the scaffold-eth framework. I am passionate about contributing to the future of decentralized finance, and working on a trust-less and permissionless web! Tech Focus: Solidity | Smart Contracts | Foundry | Hardhat | TypeScript | DeFi | NFT | dApps | ERC Standards

Solidity
HR & Recruiting Software
Forex Trading
Business
Physical Fitness
Health & Fitness
Trading Lesson
Trading Strategy
Health
Ethereum
Blockchain Development
Blockchain Security
Blockchain
Web3
$150 hourly
- 4.0/5
- (4 jobs)
Not Available for new projects till June 2024 Software engineer, hacker, AI breeder, data wrestler, blockchain mechanic, web app blacksmith - Expert Vetted Badge acquired. These days, my main focus is on applications that leverage LLMs and other AI technologies. I like to design and build stuff, but the thing I enjoy most is problem solving. I sometimes get bored easily and thrive on new challenges, be they algorithmic or even the occasional bug-hunting - I actually like debugging! With a solid background in full-stack engineering, machine learning, data engineering, and complex web scraping, and a recent interest in blockchain technologies, I am able to design and efficiently implement a wide range of solutions.

Solidity
Amazon Web Services
JavaScript
React
Web3
Full-Stack Development
NoSQL Database
Data Visualization
Ethereum
Web Scraping
Data Engineering
Blockchain
SQL
Machine Learning
Python
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