Hire an Expert Blockchain Developer now in the United States

BlockchainDevs is the #1 Marketplace for Freelance Web3 Developers.


Showing 34 developers. Reset filters

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

Looking for engineering leadership roles

I'm an engineering leader with a background in hardware development in the healthcare industry and open-source research protocols in the blockchain space. I currently work as an independent consultant utilizing large language models and latent diffusion technologies. I also co-founded and led a company that designed novel 3D printing systems for US federal research programs.

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

Creative & Enthusiastic Web3 Full-stack Engineer | Professional with JavaScript/TypeScript/React/Python

* Feedback from clients... - Takeo is an amazing developer who's extremely dedicated to his job. His robust knowledge of web3 & web2 programming, along with his passion for problem-solving was impressive, to say the least. Takeo helped in developing complex scripts to help us generate metadata & art for RatDAO. His patience and problem-solving skills also shined through in the smart contract development of our NFT mint. Takeo helped us launch a smooth, pain-free mint with zero hiccups. Aside from the smart contract development, Takeo's support along the way was great. He went above and beyond for us when we needed it. I knew I could always count on him for help when brainstorming new ideas, fixing bugs, and additional smart contract development. - Takeo was the incredibly talented dev for our 'just for fun' NFT Project, SOL Summer. Takeo is incredibly smart and on top of current happenings. Whenever we ran into a sticky moment, Takeo troubleshot the issues and came up with strong solutions. I look forward to working with Takeo again soon, and you'll be lucky if you work with him too! - Takeo was very professional and amazing to work with. He was very detailed and saw the project through to the end. Very knowledgeable w/ Rust and Candy machine! Really appreciate Philip's assistance with our project! - Takeo and I worked on an NFT project, actually a gaming & metaverse ecosystem. He is a great developer. I recommend him. Thank you for taking the time to read my profile. Regards, Takeo

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

Lead Blockchain Developer

I am a skilled and experienced Blockchain Developer specializing in EVM, Cosmos, and Aptos/Sui. With a strong background in blockchain technology and a passion for decentralized applications, I have successfully developed and deployed numerous projects on the Ethereum network and other blockchain ecosystems. My expertise lies in developing smart contracts, decentralized applications (DApps), and protocols using Solidity, the programming language for the EVM. I am well-versed in building complex smart contract architectures, implementing business logic, and ensuring security standards are met. I have a deep understanding of Ethereum's core principles and can efficiently navigate its ecosystem, including interacting with various Ethereum improvement proposals (EIPs). In addition to my proficiency in EVM development, I also possess extensive knowledge of Cosmos, an interoperable blockchain framework. I have hands-on experience in building cross-chain applications, utilizing the Cosmos SDK and Tendermint consensus algorithm. I am adept at designing and implementing custom modules, integrating different blockchains within the Cosmos ecosystem, and establishing secure and efficient communication channels between them. Furthermore, I have significant exposure to Aptos/Sui, a blockchain platform known for its advanced privacy features. I have worked on creating privacy-focused smart contracts and applications on the Aptos network, leveraging technologies such as zk-SNARKs and zero-knowledge proofs. My understanding of Aptos' architecture allows me to develop decentralized applications that prioritize user privacy and data confidentiality without compromising on performance. Throughout my career, I have collaborated closely with cross-functional teams, including designers, product managers, and fellow developers, to deliver high-quality blockchain solutions. I am skilled in version control systems like Git and have experience working in agile development environments. With a proven track record of delivering innovative blockchain solutions, I am eager to contribute my skills and expertise to projects that push the boundaries of decentralized technology. I am always up-to-date with the latest advancements in blockchain and actively contribute to the developer community through open-source projects and knowledge sharing. If you are seeking a Blockchain Developer who excels in EVM, Cosmos, and Aptos development, I would be delighted to discuss how my experience can benefit your organization or project.

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

Blockchain Engineer - NFT, ICO, Exchange, P2E and Metaverse

Hi there! I'm a blockchain engineer with 5 years of professional experience based in United States. Previously I've worked as a blockchain engineer at several companies. I'm an expert at NFT, token, decentralized exchanges, DeFi, GameFi, Crypto Game and have significant experience using Solidity, Rust, Haskell, MOVE, Web3. I've worked on various Blockchain projects PROFESSIONALLY. For example I created smart contracts, website and web3 integration for NFT platforms, token ecosystem, DeFi, crypto games, metaverse project, etc. I'm currently looking for a full time as a blockchain developer. If you're interested in working together, please contact me.

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

Blockchain, Full-Stack Developer

I have worked on many Web and Blockchain application by using Mern Stack technology such as Building Management System, Project Management System, Tour and Traveling Site, Defi, Dapp, and so on. Deliver perfect results at any time. Keep good communication and work on the client's time zone. I can work with the team and prefer to share much knowledge with many developers. I am looking for an opportunity to build a long-term relationship with great clients all over the world.

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

Rich dapp experiences with blockchain architecture knowlegding

Hi there! I'm a blockchain fullstack developer with 3 years of professional experience . Previously I've worked as a [JOB_ROLE] at [COMPANIES] and... I'm an expert at smart contract and web and have significant experience using solidity, rust, react. I've worked on various Blockchain projects . For example I created a various dapps. puffu-staking.netlify.app ( rust on solana ) solsea.io ( rust on solana ) defiland.app ( rust on solana ) dex.aldrin.com ( rust on solana ) doodleworkshop.web.app ( rust on cosmos ) junoswap.com ( rust on cosmos ) dragonswap.app (NFT marketplace) peaceswap.com ( solidity on ether ) 100daysventures.com ( solidity on ether ) orbitinu.storemint ( solidity on ether ) procamelriders.com ( solidity on ether ) I'm currently looking for a FULL TIME as a JOB_ROLE. If you're interested in working together, please contact me.

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

Blockchain Fullstack developer

Hi there! I'm a Blockchain and Fullstack developer with 3 years of professional experience with cryptocurrency industry and 8 years of experience in software development. Previously I've worked as a lead project developer at Traffic Nometize LLC and developed several dapps. Being an expert at Solidity and Rust language, I have significant experience in creating smart contracts using Truffle and Hardhat. I've worked on various Blockchain projects such as - Duu Finance auto staking platform - Tazor staking and bonding platform - Piston Miner token mining platform - Memekong Token staking and yield farming platform - Peaceswap DEX platform - TheApes NFT minting and staking platform - Cropsfarmer on Solana network. I'm currently looking for a part time or full time role as a blockchain developer. If you're interested in working together, please contact me.

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

A hardworking man is more powerful than ten lazy man.

I am a senior frontend engineer with 5years experience in building websites and also have experienced in blockchain technology for 2years. For 5years, I've worked with frontend developer and then recently days I've studied blockchain technology. Actually I'd like to learn new technology and master them. My main skills are javascript and javascript frameworks like that Reactjs, Vuejs and then importantly solidity. Especially I love Reactjs and Solidity. I've worked as agile methodology so very familiar with scrum environment. I will do my best for Customers. I'm currently looking for a full time as a developer. If you're interested in working together, please contact me.

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

Tactful and resourceful. Able to quickly adapt and learn to new technology as needed to develop any product

I'm a fullstack engineer and blockchain solutions architect with 2+ years of professional experience based in Florida. Previously I've worked as a CTO / cofounder at IoDLT and had the opportunity to design and build multiple DLT based solutions there. I'm an expert at designing end-to-end solutions using only web3 technology, and have significant experience using and deploying blockchain application s. I've worked on various Blockchain projects in both my spare and professional time. I've designed and built the following projects over the years (more have been built, but these are the highlights): - Axon IoT— IoT-to-Blockchain PoC Device - ANT$ Protocol—Data Monetization Protocol - COVID-19 Tracker— COVID-19 Data Aggregation Tracker - Blockchain-enabled Supply Chain Application — tracked batches of crop from US to Japan for the CBD industry I'm currently looking for a part time or freelancing contract as an engineer, advisor, or solutions architect for your next web3 solution. If you're interested in working together, please contact me!

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

Senior Blockchain Developer & Tokenomics Expert

Experienced blockchain architect, smart contracts coder and tokenomics expert. I have developed more than 100+ websites for clients and delivered large web-based DeFi/web3 and blockchain applications throughout my career. I have worked in the financial, capital markets, and payments space and have great experience in the Play2Earn game smart contract development and UI integration. My blockchain and crypto experience started in 2019 when I involved in a cryptocurrency exchange platform development. Since then, I have built, deployed, and managed multiple complex blockchain and crypto applications.

View profile
Available now
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
  • 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
  • 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