Hire an Expert Blockchain Developer now in the United States

BlockchainDevs is the #1 Marketplace for Freelance Web3 Developers.


Showing 69 developers. Reset filters

Developer's avatar
  • United States
  • 5 years+ experience

Full Stack Blockchain Developer with over 19 years of experience delivering complex software development projects.

My name is Tuan Dang who is a Full Stack Blockchain Developer with over 19 years of experience delivering complex software development projects. I have excellent knowledge of programming languages such as Node/Javascript/Golang and Solidity. I've demonstrated my ability to successfully apply the most recent development approaches to satisfy client needs. I take a collaborative approach, working with clients on project delivery and adjusting as needed; and have well-developed skills in requirements management, programming, testing, and deployment. I have strong knowledge and experience with Blockchain (Stellar, Ethereum) and Cloud Computing (AWS/Azure, IBM Cloud). I have passed the background check to work for the US Government as a contractor: Department of Transportation (US DOT), Consumer Product Safety Commission (US CPSC). I've been working in several blockchain-related fields, including: PropTech, DeFi/DEX and especially SmartContract Security/Auditing.

View profile
Available now
Developer's avatar
  • United States
  • 2-5 years experience

I'm a generalist that learns really fast

Hi there! I'm a software engineer with 3 years of professional experience based in the USA. I'm currently looking for a part-time as a full-stack engineer. If you're interested in working together, please contact me.

View profile
Available now
Developer's avatar
  • United States
  • 5 years+ experience

Ingenious, Determined, and Self-motivated senior software engineer

Hi there! I'm a Sr Blockchain & Fullstack with 9 years of professional experience based in the United States. Previously I've worked as a Sr Blockchain & Fullstack Engineer at Oasis Web Asia, Moontek, and Coincheck. I'm an expert at JavaScript, TypeScript, Ract, Angular, Vue, Node, Express, Nest, Golang, Solidity, Rust and have significant experience using React, Node, and Solidity. I've worked on various Blockchain projects. For example I created smart contracts for NFT platform, DeFi, and DAO projects. I'm currently looking for a Full time / Freelancer as a Sr Fullstack or Blockchain developer. If you're interested in working together, please contact me.

View profile
Available now
Developer's avatar
  • United States
  • 2-5 years experience

Full-stack web3 developer, from contract to web app and everything in between.

Hi there! I'm a full-stack web3 developer based in the Washington, D.C. area. Previously I've worked as Operations Manager for a national T-Mobile dealer; operator of several small businesses, from a cell phone accessory brand to a tax prep agency; Policy Analyst for the Commonwealth of Pennsylvania, and many other roles... I've now decided that I would like to professionally pursue my passion for programming. I've been coding strictly as a hobby since 1994 when I was 10 years old (unless you include the time I developed an app to automate my job with the PA Public Utility Commission as "professional work" - to me, it was just trying to get out of doing repetitive tasks!) I'm an expert at problem solving and have significant experience using Solidity, Python, JS, HTML, CSS, MySQL, SQL, React, Node.js, Bootstrap, Angular.js, Express.js, MongoDB, AWS, IPFS, REST APIs, and more. I've worked on various Blockchain projects in my spare time. For example, I created a smart contract that conducts a last sale Dutch auction NFT mint; a bot-proof NFT mint that only allows CAPTCHA-verified humans to mint; an NFT staking contract that allows stakers to earn ERC20 tokens; an NFT project that automatically reveals certain attributes when they "level up" their NFT through social media interactions, and more. I'm currently looking for full-time work as a web3 developer. If you're interested in working together, please contact me.

View profile
Available now
Developer's avatar
  • United States
  • 2-5 years experience

Smart Contract/Blockchain Developer

Hi there! I'm a Smart Contract Developer with 3 years of professional experience based in the United States. Previously I've worked as a freelancer at companies who have reached out to me to do work for them and... I won't say that i'm an expert I don't believe anyone is an expert because there's always something to learn, but I am experienced with Javascript, Python, HTML, CSS, React.Js and Solidity. I have significant experience using Open Zeppelin, Hardhat, Brownie, OpenSea, IPS, ECR-20 Contracts, and furthermore. I've worked on various Blockchain projects, the main one is building smart contracts to upload onto the blockchain for NFT's. I'm currently looking for a [FULL TIME / FREELANCER] as a [Smart Contract Developer or Blockchain Engineer. I'm a recent Harvard University Graduate. I have received my Bachelor's Degree in Computer Science. If you're interested in working together, please contact me.

View profile
Available now
Developer's avatar
  • United States
  • 5 years+ experience

Relentless on the details.

Hello, I’m a full stack web3 engineer, and I’ve worked on all aspects of a web3 product. At my last company I owned the engineering of the MVP web app (app.dimo.zone), and had a large role in the associated mobile app. I did most of the web3 integration into these products. I worked on the smart contracts for on-chain vehicle identity using ERC721, and the diamond pattern. We used meta-transactions to make the onboarding experience more smooth. The contracts were bridged to the Polygon L2 out of fee considerations. I was also on the hardware team. I was responsible for integrating the HSM to be compatible with Ethereum cryptographic operations. I am looking to get in on the ground floor of a web3 startup, and help refine the product over many iterations. Thanks, Hersh

View profile
Available now
Developer's avatar
  • United States
  • 5 years+ experience

Dedicated and motivated IT professional, Blockchain Engineer, Full Stack Developer

Hi there! I'm a Senior Blockchain Engineer with 5 years of professional experience based in San Francisco. Previously I've worked as a Lead developer at Maui Finance, Sphynx Labs, etc. I'm an expert at Solidity, Rust and Javascript and have significant experience using Web3. I've worked on various Blockchain projects professionally. For example I created a Dex/Staking contract on BNB chain and comprehensive multi-strategy vault on Ethereum, as well as several NFT marketplaces. I'm currently looking for a Full time position as a Blockchain Engineer/Full Stack developer. If you're interested in working together, please contact me.

View profile
Available now
Developer's avatar
  • United States
  • 2-5 years experience

I worked for 2 years as a blockchain and smart contract developer

Hi there! I'm a Smart Contract Developer with 2 years of professional experience based in New York. Previously I've worked as a Blockchain Developer at Hercules Pharmaceuticals and Birdie Golf LLC. I'm an expert at Solidity and have significant experience using web3.js and ethers.js. I've worked on various Blockchain projects professionally. For example I created a for the pharmaceutical industry. I'm currently looking for either a fulltime or freelance role as a Smart Contract Developer. If you're interested in working together, please contact me.

View profile
Available now
Developer's avatar
  • United States
  • 2-5 years experience

Full-stack Web3 Developer

Hi there! I'm a full-stack web3 developer. I've worked on Blockchain projects in a startup in progress, a couple clients, and a handful of personal projects. For example I created a project where users can create events on the blockchain, mint tickets from those events, and engage with those events & other users (likes, comments, etc.) using Next.js, Solidity, Web3.js, Truffle, Typescript, & Tailwind. I'm currently looking for more projects to work on either full or part time. If you're interested in working together, please contact me.

View profile
Available now