Hire the Top 2% of
Freelance Web3.js Developers

Andrew K.

Vetted Web3.js developer in the United States (UTC-5)

Software engineer with 10 years of experience with a passion for both personal growth and for software development. Detail-oriented, organized, and meticulous employee. Quick learner, strong reasoning, and problem-solving skills. Works at a fast pace to meet tight deadlines. Ready to apply my passion for coding to a talented engineering team to develop quality solutions.

Elvis C.

Vetted Web3.js developer in Canada (UTC-4)

I am a Full-stack web developer with 14 years of experience. I am proud of my rolling-up-sleeves attitude and genuine interest in JS/Python/PHP frameworks. I can fail but I always go forward with experience learned from failure. At first, I have experienced Android & iOS projects for 4 years. Then I have attended to build some big web sites and I have experience of working in web field such as PHP, Laravel, Java, JavaScript, Node.js, Express, Koa, Python for 5+ years. I have already completed more than 30 projects related to React, Laravel, Python, Django, Flask, ASP.NET Core/MVC, Vue, JavaScript, Android, Swift, React Native. As a senior full-stack developer, I have made the structure/system for React/CSS/PHP code reviews with the knowledge I experienced from tons of courses. For 7 years, I have been working with React/Redux. When React was released and open-sourced in 2013, I had been absorbed by Bootstrap 3/jquery/AngularJS. Since then, I built web apps with React/Redux/Gatsby/Next.js. - React Bootstrap/React Material UI/Styled Components/Sass has been my favorite UI frameworks so far. - My clients usually required the strict TDD with the complete unit test so I always use Unit Test Libraries with Storybook/Jest/Enzyme/Cypress.io. - Since 2016, I use TypeScript 2.0/3.0 with React to accelerate the development by Type System. - For 4 years since GraphQL was evaluated as the innovative API concept, I combined React UI and GraphQL with Apollo, Prisma Also, I'm a blockchain engineer with an abundance of experience in DeFi, and dApp projects as a smart contract engineer. I mostly contributed to solidity, web3, subgraph, and etherjs integration. Most recently, I got so much interested in Rust/Solana blockchain. Now my main skills are JavaScript (React, Vue, Angular) & Python (Django, Flask) & PHP (Laravel). - Meaningful professional cross-platform app development experience - Backend: Laravel, PHP, Node, Express, Koa, GraphQL, Ruby on Rails, Django, Flask - Database: PostgreSQL, MySQL, MongoDB, DynamoDB, CockroachDB - Serverless Experience: AWS Lambda, Asure Functions, Google Cloud Functions - Framework/Libraries: Express/Koa/Flask/Django/Zappa/PyMongo - Frontend: React.js, Redux, Redux-Saga, Angular2/4/6, Vue.js, jquery, Bootstrap4, CSS3, HTML5, SCSS/SASS/LESS - Full understanding on Agile Development including Git Flow, JIRA, Trello. - Ability to work well with other developers within an agile development team - Positive, optimistic, can-do attitude

Rodrigo P.

Vetted Web3.js developer in Brazil (UTC-3)

Experienced Entrepreneur, Technical Leader, and Software Developer with over 20 years in the industry. Holds an MSc in Computer Science with a focus on Artificial Intelligence and a B.S. in Computer Science. Demonstrated expertise in full life-cycle development, Blockchain, and AI applications. Skilled communicator with a passion for problem-solving and information systems. Seeking opportunities to leverage a comprehensive background in software development and leadership. Blockchain: Web3, Solidity Development Languages & Frameworks: HTML 5, CSS, JavaScript (ES6, JQuery, Node.js, AngularJS, ReactJS), Java, J2EE, Kotlin, GO Cloud Platforms: Google Cloud Platform, AWS Databases: Oracle, PostgreSQL, MySQL, SQL Server, REDIS, Google Cloud DataStore, BigQuery, DynamoDB, MongoDB DevOps: Puppet, Chef Script, Docker, Kubernetes Software Management: Agile projects (Extreme Programming and Scrum), TDD, BDD, Continuous Integration (Jenkins, Travis, GitHub Actions)

Filipe A.

Vetted Web3.js developer in Brazil (UTC-3)

In 15 years of experience with web development, I have built my knowledge in programming and building web applications by experience. With a bachelor's under-graduation on Graphic Design I can provide a broader view in the development of a web application, as I can not only develop it in a technical point of view, but also to take into account the user experience and market needs, as well to conduct innovation through an always evolving development, user feedbacks and market metrics. I am an agile evangelist, mainly working with the Scrum and Kanban methodologies to provide innovation through a continuously developing product and a Lean Startup environment in any company.

Francisco R.

Vetted Web3.js developer in Spain (UTC+2)

I'm an experienced Fullstack Engineer who is deeply passionate about the digital landscape of the web. While my professional journey often finds me focusing on the Frontend, I'm equally immersed in Backend development. Javascript holds a special place in my heart, with its dynamic ecosystem bridging both browser and Nodejs platforms. While tools like React, Vue, or Svelte offer incredible advantages for building robust and maintainable Frontend software, two decades in the industry have instilled in me a principle of adaptability. Evolution is the nature of our field. With this understanding, I've embraced a Framework-agnostic approach, prioritizing core logic and flexibility over any particular tool. Beyond web development, my enthusiasm also reaches into the world of Machine Learning, with a particular interest in Deep Learning and Deep Reinforcement Learning. This isn't merely a hobby for me; I've been a devoted practitioner and an avid researcher in these fields. Countless hours have been invested in learning, experimenting, and pushing boundaries with personal projects—a journey well documented on my GitHub. This exploration has also introduced me to the Python language, which I've come to admire greatly. Recently, I've been navigating the exciting world of Web 3. The idea of decentralization resonates deeply with me, and I'm actively transitioning from traditional web2 paradigms to the innovative domain of web3. A significant portion of my time is dedicated to mastering Solidity and delving into the vast ecosystem of decentralized apps on the Ethereum network. My Github is keeping track of my evolution as a Software Engineer. Go check it out if you're curios about what I'm currently up to: [https://github.com/jscriptcoder](https://github.com/jscriptcoder)

Arslan M.

Vetted Web3.js developer in Pakistan (UTC+5)

Experienced Full Stack Developer with 7 years of expertise in frontend, backend, and mobile development. Proficient in ReactJS, React Native, Swift 5, and Android Studio with Java. Demonstrated ability to develop high-performance applications, including a dynamic video editor, a broadcasting app with multi-camera streaming, and clones of Zoom and Uber for specialized use cases. Adept at bridging hybrid frameworks with native modules to optimize functionality and performance. Strong focus on R&D, problem-solving, and delivering scalable solutions.

Zeeshan R.

Vetted Web3.js developer in Pakistan (UTC+5)

To obtain a challenging position as a Senior Software Engineer, where I can utilize my strong programming skills and passion for technology to design and develop cutting-edge software solutions that drive business success. In the repair desk company I grow a lot professionally. Working in a repair desk company often involves diagnosing and fixing various technical issues. Dealing with different customer problems and technical challenges provides opportunities to develop critical thinking and problem-solving abilities. Working in a repair desk environment often requires handling multiple tasks and prioritizing them which lead to improved time management and organizational skills. There was a project, Connect Your dreams with Honda:  I worked with a tracking company to develop an application for Honda Pakistan which will be basically used by their customers. Developed and implemented a native Android and IOS application that gained over 100,000 downloads within the first month of its release. Collaborated with cross-functional teams to ensure seamless integration of application features and functionality across multiple platforms. Conducted thorough testing and debugging to ensure optimal application performance and user experience. My coworkers used to admire my consistency, hard work, skillset and punctuality.

Sviatoslav K.

Vetted Web3.js developer in Croatia (UTC+2)

Key info: \- 8+ years of experience in web development. \- App development from scratch with architecture scaling in mind. \- A good team player, ideas generator, and self-motivator. \- Understanding the principles of UX/UI design. \- Agile, Scrum, and weekly team status reporting for managers. Tech stack: \- Frontend: React, JavaScript, TypeScript, CSS, HTML, Redux, REST, GraphQL, React-Router. \- Backend: Ruby, NodeJS, Express, NextJS, MongoDB, Postgres DB, Websockets, Webpack. \- Testing: Cypress, Jest, React Testing Tools. \- CI/CD: GitHub Actions, CircleCI, AWS. \- Design: Figma, Zepplin, AdobeXD. \- Management: Trello, Jira, Github. After all, software projects aren't just about code. You also need to be able to communicate with clients in a clear and effective way, understand business needs, and know when a shortcut will benefit the client without harming the code too much. Feel the passion for building high-performance Websites. Personal info: I fell in love with computers in my childhood, around 15 years old. Over years it became interesting to understand how the digital world looks inside. After eleven years of hard education (university + self-unboxing), I understood that most of all I would like to choose would be a Frontend Engineer role. From the soft skills side, I always wanted to be a part of some great team, not by label or noisy brand, but close in spirit. Where we all together would work on the same page and can evolve into friends at some point. That is the biggest score for me. Personal skills: • By a socionics psycho type, I belong to the fourth quadra. • Understanding the principles of UX/UI design. • Built SEO-friendly & High-performance websites. • Know the principles of products' digital promotion flows: SEO, PPC, SMM, CPA. • In love with Agile&Scrum methodology. • Team player and colleague motivator. • Have a high understanding of the value of the task, responsibility, and the importance of making it done, not "doing". What I learn today: Improving knowledge of vanilla JS in deep. By the way, learning about GraphQL & React & Apollo stack. Contributing to open source In my free time. My 3 favorite resources from where I'm bumping up my knowledge and tech skills: Medium.com, Mdn.com, Syntax.fm. My credo: “Self-development, like survival, is voluntary”, - author undefined. Hobbies & Interests Self-development at least 15 minutes per day. Can't live without sport and long walks. Already made a trip to around 21 countries on a budget and won't stop on it.

PANOS M.

Vetted Web3.js developer in Greece (UTC+2)

Polyglot Senior Software Engineer, Reader and Writer LinkedIn: [https://www.linkedin.com/in/panayotismatsinopoulos/](https://www.linkedin.com/in/panayotismatsinopoulos/) Wrapcast: [https://warpcast.com/panosm](https://warpcast.com/panosm) **Education:** Computer Science Degree and an MSc in Telecommunications from University College London **Professional Experience:** * Started as a Junior developer using C and C++ for projects in the telecommunications industry. * Then moved to Java and built Web Applications using J2EE. * Then switched to C# and VB.NET building Web Applications using .NET Forms. * Then switched to Ruby and Ruby on Rails, Node.js (in fact Next.js). I speak Kotlin and Go, React, React Native. I speak databases, SQL, NoSQL, Timeseries and more. I am an AWS devops guy with Terraform expertise. The list can go on. * Since April 2024, I am in Web3. I am looking for a full-time job in the Web3/Blockchain domain.

Balaji P.

Vetted Web3.js developer in India (UTC+6)

**Blockchain Engineer | Teacher | Enthusiast Learner | Blogger | Open Source Contributor** Experienced blockchain developer with 7+ years in EVM Blockchains. Proficient in tools like Truffle, Hardhat, VSCode, and Foundry. Backed by 5+ years of solid backend development and Solidity expertise. I'm active in open-source contribution, blogging, and enthusiastic about software development, teaching, and public speaking. _“I'm the type of person that if you ask me a question and I don't know the answer, I'm going to tell you that I don't know. But I bet you what, I know how to find the answer and I will find the answer.”_