Hire an Expert Blockchain Developer now
BlockchainDevs is the #1 Marketplace for Freelance Web3 Developers.
Developer filters
Showing 256 developers. Reset filters
- Democratic Republic of the Congo
- 2-5 years experience
c'est bien de rêvé mais c'est encore mieux de le réaliser
hi I am a game developer with no experience I would like to learn how to create NFT and become better at my job by working
- Nigeria
- 2-5 years experience
I'm an artist. I imagine it, I make it.
Hi there! I'm a Solidity Developer with 1 year of professional experience based in Nigeria. Previously I've contributed to open-source projects and Dao's including Airswap, Foundry and The Algorithms/Solidity. I'm an expert at working with smart contracts and have significant experience using Solidity, JavaScript and Rust. I've worked on various Blockchain projects professionally and in my spare time. For example, I made contributions to the current Swap smart contract of Airswap and I am also an active contributor to the Foundry book. I also have private blockchain projects that I'm working on in hopes that they would have an impact on the ecosystem. I'm currently looking to work as either a part-timer or a freelancer as a solidity developer. If you're interested in working together, please contact me.
- 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.
- 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.
- 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
- 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.
- 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.
- 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.
- 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
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- India
- 2-5 years experience
Interested in Developing something revolutionary in the todays world .
Hi there! I'm a Vishwanath with 3+ years of professional experience based in Bangalore,INDIA. Previously I've worked as a Software Developer at Effia Soft Technologies. I'm familiar with programming languages like JAVA,KOTLIN,SOLIDITY,JAVASCRIPT and recently have been working on Frame work like HARDHAT, I have significant experience in developing Android applications. I've worked on various Blockchain projects along with my current JOB as iam very much enthusiastic about getting into WEB3 development. For example I created a SMART CONTRACT like - Project name (Fund Me ) *Deployed on Ethereum Rinkeby Testnet which is used to take funding from the public - Current Project name (Raffle On) *Raffle smartcontract is a decentralized and untamperable raffle app using HARDHAT framework and also CHAINLINK for the VRF2 and chain-link keepers for automation of the contract . I'm currently looking for a [PART TIME / FREELANCER] as a WEB3 /Solidity developer as iam continuously learning and i can work for almost 20 to 30 hours /week . If you're interested in working together, please contact me.
- Democratic Republic of the Congo
- 2-5 years experience
c'est bien de rêvé mais c'est encore mieux de le réaliser
hi I am a game developer with no experience I would like to learn how to create NFT and become better at my job by working
- Nigeria
- 2-5 years experience
I'm an artist. I imagine it, I make it.
Hi there! I'm a Solidity Developer with 1 year of professional experience based in Nigeria. Previously I've contributed to open-source projects and Dao's including Airswap, Foundry and The Algorithms/Solidity. I'm an expert at working with smart contracts and have significant experience using Solidity, JavaScript and Rust. I've worked on various Blockchain projects professionally and in my spare time. For example, I made contributions to the current Swap smart contract of Airswap and I am also an active contributor to the Foundry book. I also have private blockchain projects that I'm working on in hopes that they would have an impact on the ecosystem. I'm currently looking to work as either a part-timer or a freelancer as a solidity developer. If you're interested in working together, please contact me.
- 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.
- 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.
- 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
- 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.
- 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.
- 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.
- 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
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- India
- 2-5 years experience
Interested in Developing something revolutionary in the todays world .
Hi there! I'm a Vishwanath with 3+ years of professional experience based in Bangalore,INDIA. Previously I've worked as a Software Developer at Effia Soft Technologies. I'm familiar with programming languages like JAVA,KOTLIN,SOLIDITY,JAVASCRIPT and recently have been working on Frame work like HARDHAT, I have significant experience in developing Android applications. I've worked on various Blockchain projects along with my current JOB as iam very much enthusiastic about getting into WEB3 development. For example I created a SMART CONTRACT like - Project name (Fund Me ) *Deployed on Ethereum Rinkeby Testnet which is used to take funding from the public - Current Project name (Raffle On) *Raffle smartcontract is a decentralized and untamperable raffle app using HARDHAT framework and also CHAINLINK for the VRF2 and chain-link keepers for automation of the contract . I'm currently looking for a [PART TIME / FREELANCER] as a WEB3 /Solidity developer as iam continuously learning and i can work for almost 20 to 30 hours /week . If you're interested in working together, please contact me.