Hire an Expert Blockchain Developer now

BlockchainDevs is the #1 Marketplace for Freelance Web3 Developers.

Hire a Top Blockchain Developer now

Showing 445 developers. Reset filters

India
5 years+ experience

Full-time blockchain dev with over 4+ years experience

In my previous capacity as a Co-founder @ParakeetDAO, I was the lead blockchain developer writing smart contracts with security as priority. I was responsible for integrating various EVM based chains to the bridging contract which enable any ERC721 NFT to be bridged across 7 chains (Ethereum, AVAX, Optimism, Arbitrum, Polygon, BSC and Fantom). I also acted as the liaison between the external audit team and the other internal developers and UI team. I have also worked as core contributor to the Ethereum foundation primarily focussed on optimising and developing smart contracts and EIPs on top ERC20/721/1155 and other major standards. Before getting into web3 world, I was working as a senior software developer with iontrading (iongroup.com), building trading software solutions for top investment banks around the globe. From my 2-year stint at ION, I learned a lot about traditional finance.

View profile View Linkedin Profile

Available now

Poland
2-5 years experience

honest, responsible, incredible, logical

Hi there! I'm a blockchain full stack developer with 7 years of professional experience based in Poland, Georgia, United States. Previously I've worked as a blockchain fullstack developer at bc.team and as a web3 & smart contract developer at Gocha company. I'm an expert at Solidity, Ganache, Truffle, Remix, JavaScript, TypeScript, Node.js, Web3.js, and have significant experience using AWS, ZKP. I've worked on various Blockchain projects professionally. For example I created a Olympus protocol which is on the Ethereum blockchain with the goal of establishing OHM as crypto-native reserve currency. I'm currently looking for a FULL TIME or FREELANCER as a blockchain developer If you're interested in working together, please contact me.

View profile View Linkedin Profile

Available now

United States
5 years+ experience

Solidity expert with extensive full-stack experience

Hi there! I'm a [Solidity engineer] with [4] years of professional experience based in [California]. Previously I've worked as a [Blockchain Developer] at [TRILLEST] and... I'm an expert at [Solidity] and have significant experience using [Blockchain]. I've worked on various Blockchain projects [IN MY SPARE TIME or PROFESSIONALLY]. For example I created a [SMART CONTRACT WHICH Hardhat]. I'm currently looking for a [PART TIME / FULL TIME / FREELANCER] as a [Solidity engineer]. If you're interested in working together, please contact me.

View profile View Linkedin Profile

Available now

South Africa
0-2 years experience

I'm a solidity developer that loves to explore the world of web3 and challenge myself to build great projects of value.

Hi there! I'm a Solidity developer with and have been working in Web3 since April. I am based in Pretoria, South Africa. I'm open to relocating should the opportunity meet my financial needs. Previously I've worked as a smart-contract auditor at a P2E gaming platform that is currently planning its launch and I currently am assisting some developers in building an African NFT marketplace. I'm an expert at writing smart contracts and using hardhat to test and deploy them. I also have significant experience using Nextjs, Solidity, Hardhat, Node.js, Ethers.js. Some of the blockchain projects I've done in my spare time include a simple DEX exnchange, an NFT Marketplace, a DAO, an ICO and a few more. I have also participated in the Ethglobal hackathon and built a charity Gofundme type platform using Web3 tools. I'm currently looking for a Part-time, or Full-time role as a solidity developer. If you're interested in working together, please contact me.

View profile View Linkedin Profile

Available now

United Kingdom
5 years+ experience

Full stack developer with 3+ years of experience in research, building machine learning, NLP models and fullstack web applications using React JS, Node JS, and Next JS both on the web 2.0 and web 3.0 technology platform.

Hi there! I'm a Full stack developer with 3+ years of professional experience based in London, UK. Previously I've worked as a Research Assistance in Machine learning and Data analytics at the University of East London in collaboration with Intelligent Voice UK on a funded project by the INNOVATE UK. I'm an expert at Machine learning and Natural language processing, and have significant experience using web 2.0 and web 3.0 technologies. I've worked on various Blockchain projects in my spare time, I took a career break to learn how to create blockchain contracts and develop web 3.0 application in anticipation of adapting to future change in the internet trend . For example I Implemented a NFT Market place using Web 3.0 technologies and also designed an artwork and used the Hashlips engine to generate a collection of NFTs and metadata. I adapt very quickly to different situations and technologies due to my intellectual curiosity and my positive “can do” attitude which pushes me to always invest in my professional development by engaging in continued learning of new technologies. I'm currently looking for a FULL TIME / FREELANCER as a Full stack developer (AI or Blockchain). If you're interested in working together, please contact me.

View profile View Linkedin Profile

Available now

United States
2-5 years experience

Utilizing my skills and creativity to build innovative tech that improves the quality of life of others

Hi, I hope you're doing well! I'm a Computer Engineering major at UIUC graduating May 2023. Previously I've interned at Ameren for two years and at Capital One during summer 2022 as a software developer. Over the past 6 months I've developed a passion for blockchain technology and have since then done a lot of self learning and gained hands-on experience through various blockchain side projects. For example, I created my own NFT collection (https://opensea.io/collection/4rcade) where the tokens aren't just images, but are instead interactive games. I'm most proficient in C++ but the skill I've been honing is the ability to swiftly and effectively learn new frameworks and languages. Because technology changes and evolves quickly I think it is vital to be able to be comfortable with being uncomfortable. Ultimately, I strive to learn as much as I can everyday so that I can apply my knowledge and creativity to build innovative tech! I'm currently looking for a full-time position as a blockchain developer. I live in San Francisco and am able to work in-person as well. Please shoot me an email if you'd like to get in touch!

View profile View Linkedin Profile

Available now

Vietnam
5 years+ experience

Senior FullStack Engineer

Hi there! I'm a Blockchain and web fullstack engineer with 5+ years of professional experience based in Vietnam. Previously, I've worked as a senior Blockchain engineer at Rubyswap, Bidify and web fullstack engineer at Xion Company. I'm an expert at Solidity, Rust, Go, Solana, React, Angular, Vue, C/C++, JavaScript and have significant experience using frontend . I've worked on various Blockchain projects. I'm currently looking for a [PART TIME / FULL TIME / FREELANCER] as a blockchain and web fullstack position. If you're interested in working together, please contact me.

View profile View Linkedin Profile

Available now

Poland
5 years+ experience

Senior Blockchain Developer with 4+ years of experience in DApps using Web3 and Smart Contract development with Solidity and Rust.

Senior Blockchain Developer with 4+ years of experience in DApps using Web3 and Smart Contract development with Solidity and Rust. Hands-on experience in cross-chain protocol development between EVM and Non-EVM chains using LayerZero and proficiency in NFT game and Defi, DEX development. Strong knowledge of Cryptography(Encryption and Decryption) using symmetric and asymmetric algorithms, hash functions, Digital Signatures and Zero-Knowledge proof (ZKP) protocol. Interested in writing code that is reusable and scalable, following modern coding best practices and proficient in TDD/BDD. 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 View Linkedin Profile

Available now

United Kingdom
5 years+ experience

I am a Plutus Pioneer. My background is in application development & smart contract development. I have experience with Haskell & Plutus and I have been involved with 4 projects on Cardano so far on a professional contract level. I am looking for a new opportunity ASAP.

Hi there! I'm a Smart Contract developer with 2 years of professional experience on Cardano network. Previously I've worked as FullStack developer, Data Engineer, and I have built 2 startups both on Web2 & Web3 ecosystem. I'm an expert at reasoning about problem/solutions and designing systems that clearly and efficiently implement solutions requested by clients. I have built 2 startups in the past, and raised funds for one of them as well, so I also have a lot of business experience. My current tech stack includes Haskell,PlutusTx, cardano-cli, Lucid/MeshJS, ReactJS and I can build fullstack applications on Cardano. Im looking for an opportunity, only on Cardano, and I am available to start ASAP. Looking forward to hearing from you.

View profile View Linkedin Profile

Available now

India
2-5 years experience

Blockchain developer

Hi there! I'm a Taran with 6 months of experience based in India. I've self-taught myself Blockchain and its relative technology. I'm an expert at solidity, ethers.js, weh3.js, hardhat, truffle, react.js, javascript, css, html and have significant experience using these technologies. I've worked on various Blockchain projects in my past 6 months. For example I created a NFTMarketplace, crowdfunding, DEX agregagtor, Staking Dapp and DAO. 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 View Linkedin Profile

Available now

Pakistan
2-5 years experience

Solidity smart contract developer with extensive blockchain core understanding

Hi there! I'm a Blockchain engineer with 4 years of professional experience based in Pakistan. Previously I've worked as a Blockchain researcher and developer at ITU, invozone and analog. I'm an expert at Solidity, web3.js and have significant experience using truffle, remix IDE and ganeche. I've worked on various Blockchain projects PROFESSIONALLY. For example I created a smart contracts for minting sites, fungible tokens, non-fungible tokens, nft marketplaces, ICOs, airdrop, staking platforms and bridge contracts. I also have a great knowledge of exchanges. I'm currently looking for a FULL TIME role as a solidity smart contract developer. If you're interested in working together, please contact me.

View profile View Linkedin Profile

Available now

Serbia
5 years+ experience

Fullstack Blockchain Developer

Hi there! I'm a Fullstack Developer with 8 years of professional experience. Previously I've worked as a Fullstack Developer at Atlasdex, Superbonds, Arc.market and Psyoptions.io I'm an expert at Rust and Solidity and have significant experience using Blockchain. I've worked on various Blockchain projects PROFESSIONALLY. For example I created a Token Vesting, Staking, Swap, Yield Farming, NFT Marketplace. I'm currently looking for a FULL TIME as a fullstack developer. If you're interested in working together, please contact me.

View profile View Linkedin Profile

Available now

Pakistan
5 years+ experience

All rounder Sr. Blockchain Developer

Hi there! I'm a Syed Zain Hasan with 5 years of professional experience based in Zaytrics Pvt Ltd. I'm an expert at smart contract, tokenization, Cardano, Ethereum, Polygon, FLow, and have significant experience using react and nodejs. I've worked on various Blockchain projects PROFESSIONALLY. For example I created the whole eco-system of True Crime Crypto (https://truecrimecrypto.io/) and ViseClub (https://viseclub.visewealth.com/) with other members of the team. I was the team lead in those projects, also I designed and deployed the smart contracts and the system architecture. I'm currently looking for a FULL TIME / FREELANCER as a Sr. Blockchain Developer. If you're interested in working together, please contact me.

View profile View Linkedin Profile

Available now

Pakistan
0-2 years experience

Blockchain Developer - Quick Learner - Strong Analytical skills

I just love tech and programming. Web 3.0 is the next step in evolution of the internet and it really fascinates me, so I started blockchain development. I started blockchain development 8 months ago with most of my focus on the backend side. I develop smart contracts using solidity and use Hardhat framework for testing/deployment etc. Before using Hardhat, I used brownie for blockchain development. Smart contract security is highly critical so I always keep security considerations in mind while writing a smart contract. I can use - OpenZeppelin libraries - Chainlink Data Feeds - Chainlink VRF - Chainlink Keepers The smart contracts that I have developed so far are: (many more will be added to my GitHub repo soon) - ERC-20 - ERC-721 (NFT) - Crowdfunding - Upgradeable smart contracts - DeFi stake DAPP - Time vault for ETH/ERC-20 - Lottery

View profile View Linkedin Profile

Available now

India
5 years+ experience

I am a Blockchain Engineer with over 4 years of professiona experience in web3 and smart contracts

I am a Blockchain Engineer with 4 years of professional experience and have worked on a variety of blockchain and crypto projects which include DeFi, NFTs, DAOs ,various decentralized applications and proof of concepts. I have also managed teams of varying sizes in the blockchain space to build projects from the ground up for a little over 2 years while also coding hands-on in the development of the products. I have worked in early and late stage startups and am well versed with startup culture and how to be productive and fast moving.I have dealt directly with clients and collaborated with other organizations on behalf of the companies I have worked in.

View profile View Linkedin Profile

Available now

Canada
0-2 years experience

As a Blockchain Enthusiast my passion towards learning Haskell started 2 years ago. With my constant dedication and learning I was able to secure a spot for being an individual contributor at the Summer of Haskell with the Haskell foundation. Taking up a Haskell course in Emurgo and now being an intern with Haskell Foundation,I have gained a solid foundation in Haskell . Additionally, my involvement in the project "Structured Error and Error Codes in Cabal-Install" as part of Summer of Haskell has honed my communication, individual work ethics and working in a dynamic environment, which I believe are essential for a successful work experience.

Hi there! I'm a Haskell/Plutus smart contract developer with 2 years of professional experience based in Toronto, Canada . Previously I've worked as a Sr.Systems Enginner at Infosys and special Assistant at Indian Bank. I'm an expert at SQL and Java and have significant experience using Haskell and Plutus. I am a certified Cardano Developer Professional from Emurgo and have created a Plutus smart contract for a Todo list as part of my course project. I'm currently looking for a [PART TIME / FULL TIME / FREELANCER] as a smart Contract developer. If you're interested in working together, please contact me.

View profile View Linkedin Profile

Available now

United States
2-5 years experience

Metaverse Engineer

I am based in United State and passionate about Blockchain and Reactjs. Experience: 8 years ● Skills: − Blockchain Development ▪ NFTs (mint, whistelist with merkle root, presale, airdrop, burn, staking, IPFS), NFT Marketplace ▪ ERC20, ERC721, ERC1155, ERC721A, ERC721R - Token creation and distribution ▪ DeFi (Yield Farming, Swap, Liquidity, Staking, Airdrop) ▪ Ethereum L2, zkRollup, StarkNet, Starkware ▪ Ethereum, Solana ▪ SmartContract, Solidity, Rust, Cairo ▪ Web3.js, Ether.js ▪ HardHat, Truffle, Remix, Ganache ▪ TheGraph, SubQuery, Moralis − Web Development ▪ React JS(NextJS, Gatsby), VueJs ▪ Python Django, Php Laravel ▪ Java Script, Type Script, HTML, CSS ▪ JQuery, Emberjs, BackboneJs ▪ AWS Lambda, AWS Amplify, API Gateway, AWS Kinesis − Database ▪ MySQL, MongoDB, PostgreSQL, GraphQL Thanks for your reading.

View profile View Linkedin Profile

Available now

Nigeria
2-5 years experience

Full Stack Engineer | Smart Contract Developer

Hi there! I'm a Fullstack Developer with 3 years of professional experience based in Nigeria. Previously I've worked as a Software Engineer at Venturage Technologies and Backend Developer at Chainconsults. I'm an expert at backend engineering and smart contract development and have significant experience using Rust, Go, TypeScript, Solidity, JavaScript and React. I've worked on various Blockchain projects in my spare time and professionally. For example I created a web3 learning platform that integrates Solana Pay, address-based authorization, and issuing certificates as NFTs. I'm currently looking for a Full time role as a Blockchain Developer. If you're interested in working together, please contact me. I am also open to working on Freelance projects and working part time.

View profile View Linkedin Profile

Available now

India
5 years+ experience

I am Full Stack WEB3 Developer also having experience of Smart Contract development in Solidity .

I am the best candidate for this job due to my comprehensive background in blockchain development, demonstrated technical proficiency, and proven leadership abilities. With over five years of programming experience, I have a deep understanding of Solidity and the JavaScript ecosystem, making me well-equipped to tackle the challenges of building decentralized applications and smart contracts. ### Experience Highlights **Head of Blockchain at Qoodo.io** - Developed Qoodo.io, a blockchain solution for quality management on the Polygon chain. - Applied cryptographic algorithms for secure key storage and verification. - Conducted security reviews, fuzz testing, and gas optimizations. - Identified and mitigated various security threats, including signature replay attacks and oracle manipulation. - Managed quality testing on-chain using oracles and performed manual audits. - Developed token economics, internal wallets, gasless transactions using OpenGSN, and staking and vesting platforms. - Achieved high audit scores from Hacken and Vidma Security. **Blockchain Developer at Logistic Infotech** - Developed a TVL Launchpad on Uniswap V2 with 0x API interactions. - Created mechanisms to launch pools and new tokens via ICO and IDO. - Implemented cross-chain swap functionality using the 0x Protocol. - Developed a blockchain-based payment gateway named Mygrate. **Blockchain Developer at Startup Crafters** - Designed and implemented token flow for a decentralized autonomous application (DAO) specialized for farmers. - Developed vesting, staking, and treasury mechanisms pegged to stable cryptocurrencies like USDC. - Integrated blockchain contracts with React frontends and backends using RPC calls and APIs. **Blockchain Developer Intern at Devlance** - Developed and deployed Solidity-based smart contracts. - Tested contracts with tools like Slither and Hardhat. ### Technical Skills - Languages: C++, Solidity, HTML, CSS, JavaScript, SQL, Rust, Golang. - Technologies/Frameworks/Libraries: CosmWasm, Cosmos SDK, EVM, Solana, Web3.js, Git, GitHub, Docker, Ethers.js, Express JS, Node JS, React JS, Redux, Slither, Hardhat, Foundry, geth, Formal Verification, Gas Optimization with Opcodes. ### Additional Projects **Aegis AI** - Developed an advanced AI system focused on enhancing security through automated threat detection and mitigation. - Implemented machine learning algorithms to analyze data and identify potential security breaches in real-time. - Integrated AI with blockchain technology to ensure the immutability and traceability of security-related data. **Bot Development** - Created automated bots for various applications, including trading bots for cryptocurrency exchanges and customer service bots for decentralized platforms. - Designed bots to execute trades based on market conditions, using algorithms to maximize profits and minimize risks. - Developed bots to handle customer queries, providing real-time support and improving user experience on blockchain platforms. ### Additional Achievements - Mastered security and auditing with expert guidance and a course from Cyfrin Updraft. - Served as a board member at Qoodo.io, making critical decisions. - Participated in NFT Talents, DeFi Talents, and Bitcoin Talents programs at the Frankfurt School of Finance & Management. - Mentored at Mentors without Borders, teaching coding to underprivileged children. ### Why I Am the Best Candidate My extensive experience in blockchain development, combined with my technical expertise and leadership abilities, makes me an ideal candidate for this role. I have a proven track record of delivering secure and efficient blockchain solutions, managing complex projects, and collaborating effectively with cross-functional teams. My commitment to continuous learning and professional growth ensures that I stay updated with the latest advancements in blockchain technology. I am confident that my skills, experience, and dedication will enable me to contribute significantly to your team's success and drive forward innovative projects.

View profile View Linkedin Profile

Available now

Norway
0-2 years experience

Smart contract developer

Hi! My skills include HTML, CSS, Solidity, and some Python, and I'm still learning more every week. I'm currently looking for any job as a smart contract developer. If you're interested in working together, please contact me.

View profile View Linkedin Profile

Available now