Hire the best web3.js Freelancers in England

Check out web3.js Freelancers in England with the skills you need for your next job.

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$50 hourly
Hamza K.
- 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.

web3.js
Smart Contract
Webflow
Ethereum
Solidity
NFT
AWS Lambda
Node.js
React
GraphQL
Web Development
TypeScript
Rust
JavaScript
Responsive Design
$40 hourly
Pavlo F.
- 5.0/5
- (5 jobs)
Senior React Developer with 7 years of experience in building scalable, high-performance web applications. Proficient in React, Redux, TypeScript, and modern JavaScript (ES6+), with expertise in managing data states and creating responsive user interfaces. Experienced in building a range of sites from admin panels to web portals. Led the development of a complex e-commerce platform, increasing user engagement by 30%. Familiarity with cloud configuration and backend processes, facilitating smooth collaboration with full-stack teams. Strong focus on test-driven development, having written and maintained over 1,000 unit and integration tests using React testing libraries and Jest, resulting in a 70% reduction in production bugs. Passionate about crafting innovative user experiences and eager to contribute to cutting-edge projects in a collaborative environment.

web3.js
YARN
AWS Cloud9
Ethers.js
Redux Saga
GitHub
webpack
Docker
RESTful API
GraphQL
Redux
JavaScript
TypeScript
Next.js
React
$45 hourly
Syed Komail A.
- 5.0/5
- (16 jobs)
Website and Mobile App developer with 5+ years of experience Top Rated Plus top 3% of performers on Upwork Experienced Engineer for iOS, Android, Web & Backend Solutions. Among the very & top best engineers out of 300,000 engineers on this platform. Proficient in React, React Native & Expo , Next JS, Vue JS,Node.JS, TypeScript. Certified in The Complete 2023 Web Development Bootcamp. Focused on Clean Code, Scalability, and Effective Communication. Global clientele from USA, Europe, Middle East adept in both frontend and backend. Specializes in crafting Minimum Viable Products (MVPs) for market testing. Let's discuss how I can contribute to your exceptional project!

web3.js
Responsive Design
Redux Thunk
React
HTML
Next.js
Redux
MongoDB
Sass
CSS 3
Web Application
TypeScript
JavaScript
Node.js
CSS
$80 hourly
Ray S.
- 5.0/5
- (10 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.

web3.js
AI Development
Trading Strategy
ChatGPT
Derivatives Trading
Ethereum
Solana
JavaScript
Solidity
Python
C#
C++
TensorFlow
Golang
Rust
$40 hourly
Hugo R.
- 5.0/5
- (1 job)
✅ Technical Skills: 📌 𝐒𝐨𝐥𝐚𝐧𝐚 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Anchor | Rust | Solana Web3.js | Solana RPC 📌 𝐁𝐨𝐭 𝐁𝐚𝐜𝐤𝐞𝐧𝐝: JavaScript/NodeJS, Python/Django/Flask 📌 𝐓𝐫𝐚𝐝𝐢𝐧𝐠 𝐁𝐨𝐭 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: DEX | Serum | Jupiter Aggregator | Raydium | GMGN | Pump.fun | Orca 📌 𝐓𝐞𝐥𝐞𝐠𝐫𝐚𝐦 𝐁𝐨𝐭 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Python-telegram-bot | Telethon | Aiogram | BotFather 📌 𝐌𝐢𝐧𝐢-𝐀𝐩𝐩𝐬 & 𝐖𝐞𝐛 𝐀𝐩𝐩𝐬: Telegram Web Apps | React.js | Next.js | TypeScript 📌 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧: Web3 APIs | Chainlink | Pyth Network | Third-party APIs 📌 𝐑𝐞𝐚𝐥-𝐭𝐢𝐦𝐞 𝐃𝐚𝐭𝐚 𝐇𝐚𝐧𝐝𝐥𝐢𝐧𝐠: WebSockets | TradingView API | CoinGecko API 📌 𝐀𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦𝐢𝐜 𝐓𝐫𝐚𝐝𝐢𝐧𝐠: Trading Strategy | Sniping Bots | Copy Trading | Arbitrage | Eliza Framework 📌 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: PostgreSQL | MongoDB | Redis 📌 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬: AWS | Google Cloud | Docker 📌 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧: Private Key Management | Gas Optimization | Front-Running Protection 📌 𝐂𝐈/𝐂𝐃 & 𝐕𝐞𝐫𝐬𝐢𝐨𝐧 𝐂𝐨𝐧𝐭𝐫𝐨𝐥: Git | GitHub Actions ✅ Soft Skills: 📌 Analytical Thinking 📌 Problem-Solving 📌 Risk Management 📌 Attention to Detail 📌 Time Efficiency 📌 Effective Communication 📌 Adaptability

web3.js
API Integration
API
Web Development
Telegram API
Python
Node.js
JavaScript
Bot Development
AI Trading
Trading Strategy
Trading Automation
Rust
Cryptocurrency Trading
Solana
$90 hourly
Jonathan M.
- 5.0/5
- (20 jobs)
⭐ 100% Positive Client Feedback 💻 Web & Mobile Development Specialist ✅ 20+ Years of Professional Development Experience 🌐 Key Skills: JavaScript | TypeScript | React | Redux | GraphQL | NextJS | NestJS I am a profesional full-stack developer, architect, and fractional CTO with over two decades of industry experience in both development and leadership roles. My specialisation lies in offering founders on-demand technical expertise, guiding them through any technical challenges encountered during the startup or scaling phases of their business. A full-stack developer at heart, I enjoy getting my hands dirty when the job needs doing. Having mastered all aspects of HTML, CSS & JavaScript/TypeScript you can expect the best possible results from your project! I employ modern frameworks to streamline time-to-delivery and maximise ROI. Below is a list of technologies I'm currently working with and recommending to clients. I'm continually evaluating new technologies, ensuring constant evolution of my opinions and skill set. ✨ Specialised in: ✮ FRONTEND - JavaScript, TypeScript, React, Redux, GraphQL, REST ✮ FRAMEWORKS - NextJS, Vite, Remix, Gatsby, Electron ✮ TESTING - Vitest, Jest, Testing Library, CypressJS ✮ TOOLING - TsLint, EsLint, Prettier, Webpack, Rollup, ParcelJS ✮ MONOREPO - NX, Lerna, Yarn workspace ✮ NODE - NodeJS, ExpressJS, NestJS ✮ DATABASE - Mongodb, PostgreSQL, MySQL, Oracle, SQLServer ✮ CLOUD - AWS, GCP, Firebase, Prisma, Hasura Beyond technical proficiency, I am intensely product-oriented, placing a strong focus on enhancing the user experience. Let's collaborate to bring your vision to life! Feel free to reach out, and let's discuss how my extensive experience and specialization can contribute to the success of your project.

web3.js
GraphQL
RxJS
React
Gatsby.js
Next.js
API
Figma
React Native
Electron
RESTful API
JavaScript
TypeScript
Node.js
$40 hourly
Dost M.
- 0.0/5
- (1 job)
I am a grant writer. I can help with full grant application for any Innovate UK grant. Please, see below in Section 3 what I can help with in the application. As an Agency on Upwork, we can help with quick startup idea validation. We do grant writing, software development and petroleum engineering consulting. Our Agency on Upwork is called 'Software, Petroleum Engineering, Grant Writing'. Section 1. A software engineer with 10+ years of experience in web application development A petroleum engineer with 30+ years of experience in field development and pipelines A grant writer with 10+ years of experience in finance, market research and startup development. The software engineer has developed more than 30 websites using Javascript, PHP, Wordpress/Woocommerce etc. Experience in web3 and AI-powered projects. - Programming Javascript, Typescript, PHP, Python, Java, - Mobile React Native, Flutter, - Frontend React, Vue, NextJs, Redux, HTML5, CSS, SCSS, TailwindCSS - Backend Django, Express, Laravel, Nest.js, Wordpress - Database PostgreSQL, MongoDB, MySQL - DevOps Docker, AWS, Kubernetes, CD/CI - Blockchain web3.js, ethers.js, wagmi Ready to help ideas into web applications, develop strategies to grow revenues, optimize sales performance, and help maintain websites. Section 2. The petroleum engineer with expertise in field development, pipelines and much more can help shape innovative ideas in energy sector and beyond. In depth knowledge of energy sector, oil and gas industry, pipelines and all facets of energy. Proven track record of innovation and developing patentable tech for some of the largest energy companies in the world. Section 3. The grant writer with experience in successful Innovate UK Grant Applications. Ready to help with new Innovate UK grant applications or improve a past submission. Need help with full grant application including market research, competitors analysis, route-to-market, budgeting and financial projections, risks analysis? Let's talk. The Innovate UK Smart Grants grant writing. - Defining the project scope - Finding a project partner and team members - Project budgeting, financial projections, form applications - Idea and innovation explanation - Idea validation - Funding justification - Market research and analysis: potential, size, TAM, SAM, SOM, route to market - Exploitation plan - Project impact and benefits - Project team: building, description of duties, deliverables - Project outcomes, work packages, risks - Value for money - Project finances, wages and salaries.

web3.js
Business Plan
Grant Proposal
Grant Writing
Petroleum Engineering
PostgreSQL
MySQL
WordPress
Next.js
React
Django
Java
Python
React Native
Grant Application
$60 hourly
Hari P.
- 0.0/5
- (0 jobs)
👨‍💻 Full-Stack Developer with a Proven Track Record 🚀 I’m a highly skilled and results-driven Full-Stack Software Engineer with 3+ years of experience, specializing in building robust, high-performance applications using React, ElectronJS, TypeScript, NodeJS, and OpenFin. My expertise spans both front-end and back-end development, allowing me to deliver full-stack solutions tailored to your needs. Why choose me over others? 💡 ✅ I’ve led complex projects—like migrating financial apps from Electron to OpenFin, boosting performance and scalability. ✅ I’m an expert in system architecture using NX Monorepo, enabling faster deployment and better maintainability across React apps. ✅ I deliver scalable mobile and web solutions using React Native, GraphQL, and Redux, enhancing user experience and optimizing state management. ✅ I build custom libraries and integrate systems for efficient development, including a Solana blockchain tool for automated crypto trading, adding value for crypto traders through automation. 📊 Achievements: Developed the Merlin Portal and Trader Ticket for Mizuho Bank, enhancing market data visualization and RFQ handling. Migrated systems to OpenFin, significantly improving performance and deployment speed. Created a custom IPC library, boosting inter-app communication and development speed. Built a Solana blockchain tool for blockchain data manipulation, automating trading strategies. I have a passion for delivering high-quality, scalable software that solves real-world problems. Whether you need a new web application, system migration, or performance optimization, I’m ready to help you bring your project to life. Let’s work together to build something great! 🎯

web3.js
Blazor
.NET Core
NestJS
Next.js
Node.js
Tailwind CSS
Desktop Application
Web Development
Web Application
Electron
React Native
React
Web3
$40 hourly
Jerin J.
- 0.0/5
- (0 jobs)
Seasoned Full Stack Developer with experience. Proficient in several programming languages and frameworks.

web3.js
Docker
Git
Ethers.js
PostgreSQL
Python
Node.js
Rust
Solidity
Next.js
React
Tailwind CSS
TypeScript
Blockchain Development
Web Development
$65 hourly
Iwan E.
- 0.0/5
- (0 jobs)
I am a seasoned developer with expertise in blockchain and full-stack development, specializing in Solidity smart contracts and decentralized applications. My skill set includes Solidity, Hardhat, Foundry, Truffle, and OpenZeppelin for smart contract development, along with Node.js, Express, and NestJS for backend APIs. I have hands-on experience with both PostgreSQL and MongoDB for database management and leverage platforms like Alchemy for blockchain interactions. On the frontend, I work with React.js and Next.js to create seamless user experiences, integrating Web3.js and Ethers.js for blockchain connectivity. With a strong foundation in Web3 and full-stack technologies, I am passionate about building secure, scalable, and innovative decentralized applications.

web3.js
NestJS Development
ExpressJS
NodeJS Framework
SQLAlchemy
The Foundry Modo
Truffle
Hardhat
Ethers.js
Next.js
React
Solidity
$28 hourly
Chan T.
- 0.0/5
- (0 jobs)
A developer having 20+ years of coding experience, from C/C++ to Dart, a competent player is here. Looking for cost effective solutions to your mobile app / web app / web3 projects? Welcome to contact me! - Flutter - AWS backed - Web3 development - Solidity

web3.js
Solidity
NoSQL Database
MySQL Programming
NodeJS Framework
PHP Script
Flutter Stack
OpenAI Codex
C++
jQuery
JavaScript
AWS Amplify
$30 hourly
Ram D.
- 0.0/5
- (0 jobs)
Experienced Software Engineer with a demonstrated history of working in the computer software industry. Skilled in Node.js, Express.js, React.js, Typescript, Microservices, Kafka, Docker, Redis, SQL, and NoSQL databases.

web3.js
Elasticsearch
PostgreSQL
MongoDB
Redis
Ethers.js
Material UI
Product Development
JavaScript
Responsive Design
Node.js
React
Web Application
Web Application Development
TypeScript
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