Hire an Expert Blockchain Developer now

BlockchainDevs is the #1 Marketplace for Freelance Web3 Developers.


Showing 445 developers. Reset filters

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
  • Turkey
  • 2-5 years experience

Enthusiast

Backend developer, who previously have worked at rocknblock. My current stack is [python, solidity, rust, docker, cf, aws, ansible, linux]. I have experience in building crosschain bridges and web3 apps mostly in eth-like chains, NEAR and SOLANA. Interested in any job as long as it pays my hourly rate.

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

Full Stack developer with over 8 years of experience in web and blockchain development. Experienced in DeFi, DEX and NFT projects.

Hi Here is a full stack developer with over 8 years of experience in web and blockchain development. Have developed DEX, DeFi and NFT marketplace and my role is frontend, backend, smart contract development and web3 integration. Well-versed in using Hardhat and Truffle for smart contract development and unit test. My skills; - Solidity, Rust, Haskell, GO, Cosmwasm - Hardhat, Truffle - Web3.js, Ether.js, CosmosJS, Alchemy - React.js, Vue.js, Angular, Next.js, Nuxt.js - Javascript, TypeScript - Laravel, CodeIgniter, WordPress - Node.js, PHP, Express, Loopback, NestJS, GraphQL, Subgraph - C, C++, C#, Python, Java - Game development, Unity3D My experience; - DeFi, DEX and NFT marketplace development - ICO, IDO, IFO - Blockchain(NFT) game development - Website development (frontend and backend) Can start working immediately and can work in your time zone. I will share my previous projects and relevant experience in an interview. Please feel free to contact me if you have any projects or new job opportunities. Best Regards, Billy

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
  • Russia
  • 0-2 years experience

21 y.o. developer with enormous love to crypto

Hi there! I'm a backend/smart contract dev with 3 months of professional experience based in Moscow, ready to work remotely or relocate. Previously I've worked as an intern at Gnosis Chain(Blockscout Technologies Ltd.) Skills: Python/C++/Java Had experience with Solidity, Golang, Rust. Had experience researching EVM, implementing some features to several Ethereum clients. Docker, PostgreSQL, Flask, etc. Cuda/OpenMP/MPI Opencup, rucode, codeforces contests participant. Education Moscow Aviation Institute (National Research University), Moscow – bachelor 09.2018 – 07.2022 Applied mathematics and informatics Moscow Aviation Institute (National Research University), Moscow – master 09.2022 – Mathematical and software protection of information systems and technologies I'm currently looking for a full time job as a backend/smart contract dev. If you're interested in working together, please contact me.

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

I am full-stack and blockchain developer with full experience

Hi there! I'm a [JOB_ROLE] with [X] years of professional experience based in [LOCATION]. Previously I've worked as a [JOB_ROLE] at [COMPANIES] and... I'm an expert at [SKILLS] and have significant experience using [TECHNOLOGIES]. I've worked on various Blockchain projects [IN MY SPARE TIME or PROFESSIONALLY]. For example I created a [SMART CONTRACT WHICH ...]. I'm currently looking for a [PART TIME / FULL TIME / FREELANCER] as a [JOB_ROLE]. If you're interested in working together, please contact me.

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

Senior blockchain | Full Stack engineer

Hi there! I'm a Senior blockchain | Full Stack engineer with 5 years of professional experience based in Hong Kong. Previously I've worked as a Senior Blockchain Developer at Silo Finance and as a Junior Blockchain and Web Developer at Point Network. I'm an expert at smart contract and front-end development and web3 integration and have significant experience using solidity, rust, react, web3.js, typescript and so on. I've worked on various Blockchain projects professionally. For example I created a smart contract which has dividend, swapable and anti-bot features. I'm currently looking for a full-time job as a blockchain developer. If you're interested in working together, please contact me.

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

Full stack && BLOCKCHAIN Developer

Hi, I am a senior blockchain developer with proficiency in NFT marketplace, Smart Contract development, ICO& IDO, Smart Contract Audits, DeFi/DApp development. My blockchain experience is extensive, having worked with blockchain since 2017. I am well-versed in the following services: ▶️ Smart Contract Development 🔹 ERC20, ERC721, ERC721A, ERC1155, BEP20, BEP721 Standards, Solana, EOSIO, WAX, Elrond networks. 🔹 Contract Test and Audit in development environment by using Truffle, Hardhat 🔹 Anti-Bot, Whitelist functions integration for Token, NFT contracts 🔹 Wrap Token Contract development from BTC, NDAU, Doge, etc. ▶️ Smart Contract Audits 🔹 Code checking line by line 🔹 High/Middle/Low level severity Audit test on the testnet, devnet 🔹 Provide audit with functional example ▶️ Defi/ DApp Development 🔹 Forking Dex tools like Uniswap, Sushiswap, Pancakeswap, Rubic with special requirement 🔹 Crypto Escrow System development (Frontend: React, Backend: Laravel, Python/Flask, Escrow Contract development) 🔹 ICO & IDO, Token airdrop & presale service platform with custom supply, Liquidity, whitelist 🔹 Wallet connection using web3.js or ether.js ▶️ NFT minting & staking, marketplace Development 🔹 Minting, Staking Contract on ERC721, ERC1155 standards on Ethereum, Polygon, Avalanche, BSC, Harmony, Solana network 🔹 P2E (Play to Earn) contract development ▶️ Cross-Chain-Bridge Development. 🔹 Child Token, Bridge Contract development 🔹 Relay service integration like Moralis, Chainlink, Chainstack 🔹 Well-made Cross-Bridge DApp development using react.js, web3.js, MongoDB ▶️ CEX Development 🔹Spot & Margin Trading option, Multi-Chain Support 🔹 Fiat Withdraw, Deposit function by using PayPal, Stripe, CoinPayment, Perfect Money Api integration 🔹 Well-Structured DB Design ▶️ Crypto Bot Development 🔹 NFT Minting & Sale Order Bot development 🔹 Auto Trading Bot 🔹 Crypto AIO Bot I am available on the flexible timezone, and I can accept full-time, part-time, contest position. Therefore If you share your idea, I will make it to reality. Best Regards. We will meet on the crypto-verse.

View profile
Available now
Developer's avatar
  • India
  • 0-2 years experience

We deal in Web3

Hi there! I'm a Blockchain Developer with almost 1 year of experience based in India. Previously I've worked as a Web3 Content Analyst (Internship) I'm an expert at Solidity and have significant experience using ReactJS. I've worked on various Blockchain projects for example I created a NFT game in which you have to mint a NFT with certain attributes and fight with the boss. I'm currently looking for a [PART TIME / FULL TIME / FREELANCER] as a Blockchain Developer. If you're interested in working together, please contact me.

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

Solidity| Hyperledger| Web3

My name is Shivansh , I've gained the knowledge and skills required for blockchain developer, smart contract development ,auditing job, example solidity ,blockchain , ethereum,bitcoin. I'm looking to gain more practical knowledge in blockchain space. I will make sure to be the valuable addition to the company. Thank you Regards Shivansh Shrivastava

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

Reliable, accurate, bug hunter I'm able to work on smart contracts and their connection with the frontend, together with backend server development

Hi there! I'm a solidity with 2 years of professional experience based in Italy. Previously I've worked as a Technical Product Manager and freelance developer for at many gaming companies. I'm an expert in developing smart contracts and have significant experience using Solidity, PHP and Javascript. I've worked on various Blockchain projects professionally. I'm currently looking for a contractor job as a solidity developer. If you're interested in working together, please contact me.

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

Fullstack blockchain engineer

Hi. I'm a Web3 developer with one year of professional experience. I have significant experience using Solidity, Hardhat, Ether js, and react. I've worked on various Blockchain projects. For example, I created an NFT Marketplace, a turn-based NFT browser game, and DAO. I'm currently looking for a part-time as a Web3 developer. Please let me know if you're interested in working together.

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

Blockchain Developer

Hi there! I'm a Blockchain Architect with 4 years of professional experience. I'm an expert at Ethereum and EVM based chains and have significant experience using Solidity, DeFi Apps, Javascript, Typescript, Node JS, React Js. I've worked on various Blockchain projects. I have built Cross-Chain Bridging Solutions for ERC20 token transfers, Staking, Vesting, NFT Marketplace contracts, and integrating protocols like UniSwap, Aave in web applications... among others I'm currently looking for exciting work in DeFi. If you're interested in working together, please contact me.

View profile
Available now
Developer's avatar
  • Nepal
  • 0-2 years experience

Its been 4 years i have been working in backend systems.Currently I am getting my hands dirty on solidity smart contracts and web3 ecosystem.

Hi there! I'm a backend developer with 4 years of professional experience based in Nepal. Previously I've worked as a backend developer at explore by technologies. I'm an expert at node.js and have significant experience using node.ja. I've worked on various Blockchain projects in mu spare time. For example I created staking smart contract, NFT miniting site and a erc20 smart contract. I'm currently looking for a fulltime role as a junior solidity developer. If you're interested in working together, please contact me.

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

Full-Stack Blockchain Developer

Full Stack Blockchain Developer with extensive experience in Smart Contract development and deployment on EVM Compatible Blockchains with Solidity and the Solana Ecosystem with Rust, Front-End development in React, ReactNative and NextJs, Back-End development in NodeJs, Python, Rust, The Graph, IPFS, etc. I have a Proven understanding of the use of Blockchain Technology in the development and execution of Secure, Trustless user-facing Decentralized applications. I'm currently looking for a PART TIME / FULL TIME / FREELANCER as a Full-Stack 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

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
Developer's avatar
  • Mexico
  • 2-5 years experience

Polyglot Software Developer

Hi there! I'm a Software Engineer with 5 years of professional experience based in Oaxaca, Mexico. Previously I've worked at CIRA and... I'm an expert at Python, Go and have significant experience using Linux/UNIX. I've worked on various Blockchain projects in my spare time. For example I created a service to send crypto by email (yes, archaic I know). I'm currently looking for a part-time as a DevOps. If you're interested in working together, please contact me.

View profile
Available now
Developer's avatar
  • Turkey
  • 0-2 years experience

I see blockchain as the next big step in technology, and I am dedicated to become an expert

Hi there! I'm a back end developer with [2] years of experience based in Turkey. Previously I've worked as an operations supervisor at Incheon Airports (south korea). I'm an expert at [back end development and overall operations management] and have significant experience using Ethereum blockchain, solidity, javascript, and python. I've worked on various Blockchain projects in my spare time such as setting up ethereum smart contracts and solana dapps. I'm currently looking for a remote part time or full time job, and I am also prepared for a hybrid job. If you're interested in working together, please contact me!

View profile
Available now