Hire Freelance Web3 Developers and Engineers
John McLaughlin
John is an experienced Ethereum dApp developer. He has created NFT factories and marketplaces on Ethereum Mainnet and L2 chains like Polygon, Arbitrum, Optimism, and zkSync for five Toptal clients. He has designed and deployed 150 unique Solidity smart contracts (ERC-20, ERC-721, ERC-1155) integrated into various decentralized platforms and applications. As an AWS Certified Developer Associate, John has also developed and deployed serverless applications for Toptal and other freelance clients.
Show MoreDraco Li
Draco is a seasoned lead engineer with over 12 years of extensive full-stack experience in various industries, including online retail, web3, and AI insurance. As a founding engineer at Dots, Draco spearheaded the launch of highly acclaimed iOS apps, TwoDots (50+ million downloads) and Dots & Co (1.5+ million downloads within two days). He also served as the engineering lead at Loose Button, where he launched an online advertising network that grew to over $1 million in sales in three months.
Show MoreSylvain Vittecoq
Sylvain's been a CTO, engineering manager, and senior software engineer in the US and Europe. He is a very hands-on, result-oriented expert in Java and solution definition and can work with anyone from engineers to C-level execs. Sylvain's delivered nationwide security infrastructures for millions of devices and connected millions of eCommerce users. Sylvain founded FileChain to offer next-generation blockchain platforms for large-scale Web 3.0, Industry 4.0, and NFT decentralized marketplaces.
Show MoreOctavian Lojnita
Octavian, an accomplished software polymath, has 20+ years of experience in networking, security, apps, websites, blockchains, and emerging technologies like AI. His expertise in app development, iOS games, custom web systems, and fintech has propelled numerous projects to success in both the Web 2.0 and Web 3.0 realms. Leveraging his profound knowledge, Octavian pushes the frontiers of blockchain technologies, fostering innovation within all his expertise.
Show MoreAsad Hayat
Asad is a blockchain and back-end developer with over five years of experience. He is passionate about learning and exploring new technologies. He enjoys working in the blockchain space and has expertise in Hyperledger Fabric and EVM compatible blockchains. Asad can also work as a full-stack developer and has experience in technologies and frameworks like, React and Angular on the client-side and Node.js/Express, PHP/Laravel, and Golang on the back end.
Show MoreKaustav Chakraborty
Kaustav is a hands-on, goal-oriented, versatile technology professional with more than two decades of experience, primarily in open-source digital technologies, such as blockchain, IoT, microservices, cloud, distributed architecture, R&D, design, and development, with a proven track record delivering consistent business results. He loves to take on technical challenges, learn about new technology innovations, and deliver successful products worldwide.
Show MoreJohn R. Kosinski
As a veteran full-stack developer, John's great breadth and depth of experience include cryptocurrency, IoT, blockchain, and mobile projects. His foundation is in C and C++, with many years of experience in .NET. His work experience up until 2009 was in the NYC and NYC area. Since 2009, he's been living abroad and working remotely. John has a personal research project in the background, involving blockchain and deep neural networks.
Show MorePlaton Floria
Platon is a lead software engineer with twelve years of professional experience, eleven of which were developing with Python and two with Rust. Throughout his career, he has worked on various projects, ranging from industry-changing solutions to game add-ons. Platon has led back-end, front-end, platform, and blockchain application development.
Show MoreGianluca Vaccarini
Gianluca is a highly versatile full-stack software engineer. He has helped many companies take an idea and turn it into a product that serves thousands to millions of users. He's built the software that powers Tesla's service centers for scheduling from scratch and worked at big tech companies, such as Atlassian, Adobe, Snapchat, Starbucks, and T-Mobile. Known for building fast and exceptionally well, Gianluca can work on either end of the stack.
Show MoreJesper Kristensen
Jesper loves solving problems and helping develop next-generation engineering systems. He is motivated by a deep drive to create excellent solutions and aims to be challenged while moving companies forward. Jesper enjoys working on a budget and delivering on strict time restrictions—it's challenging and exciting.
Show MoreRicardo D'Alessandro
Ricardo is a seasoned React and React Native engineer with seven years of experience developing applications for 20+ companies spanning large enterprises to agile startups. His broad industry expertise spans entertainment, healthcare, technology, finance, education, eCommerce, logistics, insurance, home goods, and crypto. He's contributed to enhancing Amazon AWS's apps and scaling FastAF's eCommerce iOS app while delivering high-quality software like widely-used OTT and facility concierge apps.
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