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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.

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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.

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Japan
5 years+ experience

Full stack developer focused on blockchain

As a full stack developer, I have experience of web development for 9+ years and 3+ years of blockchain development. I have done many projects for social networking, e-commerce, and Blockchain projects. During development, I have more than 42 happy customers and built more than 89 large and small projects. Recently, I has built several blockchain projects such as DEFI, Token Swap Tool, P2E Games, NFT Minting page and NFT Marketplace. If you have a good idea to start or grow a business, I can implement it successfully. If you need, you can contact anytime with me and discuss about projects. Cheers.

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Pakistan
5 years+ experience

Full Stack Developer | Javascript | Python | Solidity | Rust | Plutus

Full stack developer (MERN and Python), experienced in Blockchain(Solidity,Rust, Plutus) Passing Knowledge of Machine Learning and Statistics . Team player with excellent communication and interpersonal skills. Ability and experience in working in high pressure environments and solving complex problems. Experienced in working with the MERN stack. Solid understanding of MongoDB, React and Node. Including advanced state management libraries such as MobX and Redux. Also experienced with Redis and mongoose ORM as well Experience in writing smart contracts on Ethereum and other EVM compliant chains (for e.g Polygon,BSC,Avalanche etc) in solidity and a solid understanding of the web3 protocol and integrating DAPPs with it. Additionally also experienced with building DAPPs on the Cardano Blockchain via Plutus

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Canada
5 years+ experience

Senior Web3 Full Stack Engineer

🎉Dear clients!!! Thank you for visiting my profile. Are you looking for a passionate professional, who can help you to solve your problems in an effective and convenient way? Then you have landed on the right profile. With hard-earned knowledge, skills, and 6+ years of continuous learning, hustle, and improvements as a developer, I would be able to help you in the best possible way, fulfilling your requirements from Design to Deploy. ✅ Blockchain Field: 📌 Ethereum, Binance Smart Chain, Polygon, Avalanche C-Chain, Solana 📌 Defi(AMM models, Yield Farming, Staking, Liquidity Pools), Dex, NFT MarketPlace 📌 Smart Contract, Web3.js/Solana-Web3.js, Ether.js, Truffle/Remix, Anchor ✅ Web Field: 📌 Node.js(ExpressJS/NestJS), .NET Core, AWS Lambda, CI, Laravel 📌 React/Redux/Next.js(Typescript based), Angular/Angular Universal/RxJS 📌 Bootstrap, TailwindCSS, Styled Components, Sass/Less, MUI/Chakra UI/Kendo UI 📌 Headless/Prismic, Shopify, WordPress 📌 React Native, Ionic Framework 📌 Firebase, AWS Service, Notion, Trello, Digital Ocean 📌 GitHub Action/GitLab CI/BitBucket Pipeline, Netlify/Heroku ✅ Programming Languages: C/C++/C#, Python, Javascript, PHP, Solidity, Rust ✅ Experienced Technology: Streaming & Image, Audio Processing Your 🏆success is my 🏆success and I will not let you down. 🚀Let's have a good journey!!!

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Canada
5 years+ experience

Experienced Solidity Engineer

Hi there! I'm the Lead Blockchain developer at MetaRents with 8 years of professional experience based in Canada. I'm an expert at Web3 and have significant experience using full-stack technologies. I've worked on various Blockchain projects PROFESSIONALLY. For example I created a token bridge between Ethereum and Avalanche. 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.

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Italy
2-5 years experience

I want to learn and leverage the latest web technologies to improve the world!

Hi there! I'm a .NET developer with 5 years of professional experience based in Trieste - Italy. My job role is IT Consultant at Reply s.p.a., the biggest Italian IT consulting firm. I'm an expert at C# and have significant experience using many web technologies and framework, like Angular, React, Typescript, Entity Framework, ASP.NET, SharePoint, Sitecore and more. Since November 2021, I've studied and worked on various Blockchain projects in my spare time as a way to learn the technology. The projects I'm most proud of are a DeFi dApp (frontend + smart contracts) that allows the user to stake tokens to accrue a reward token, an NTF project to randomly generate NFTs properties, a project to connect and use AAVE APIs, a smart-contract lottery and many others. I'm currently looking for a part-time, freelancer job as a junior/mid-level smart contract developer or full stack developer. If you're interested in working together, please contact me.

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Singapore
5 years+ experience

Senior Blockchain Developer | Full-Stack Engineer

Hi there! I'm a senior Blockchain Developer with 4 years of professional experience based in Singapore. Previously I've worked as a Software Engineer at Kryptomon and I'm sure that is the big plus for describe me in more details. I'm an expert at Smart contract, EVM and have significant experience using Solidity, Rust, Haskell and so on. I've worked on various Blockchain projects NFT marketplace , Crypto Trade bot and so on. For example I created a Kryptomon Marketplace from scratch. I'm currently looking for a Full-time as a Full-stack Developer. If you're interested in working together, please contact me.

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India
0-2 years experience

An enthusiastic practitioner who loves to implement everything what he learns.

Hi there! I'm a Blockchain Developer with 1 year of professional experience based in remote. Previously I've worked as a Blockchain Developer Intern at Dapp-world and I'm an expert at integrating frontend with solidity backend using ethersjs and have significant experience using Solidity. I've worked on various Blockchain projects in my spare time. Here is my portfolio you can check: https://bit.ly/Blockchain_Portfolio_ (uploaded on IPFS) I'm currently looking for a PART TIME / FULL TIME as a Blockchain Developer. Looking forward for positive response.

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Thailand
0-2 years experience

Software Engineer with 3+ years in Functional programming, Entrepreneurial, Bitcoin Cash, Vyper Smart Contract, and Open source contribution.

Hi there! I'm a web3 and smart contract developer with 3 years of professional experience based in Bangkok. Previously I worked as a Software engineer at Biggest Fan Production I'm an expert at Vyper, Bitcoin cash, and Web3 development and have significant experience using Elm React Python Vyper Hardhat Brownie. I've worked on various Blockchain projects in my downtime on the Tally Ho wallet extension and Bitcoin cash infrastructure. For example, I add EVMOS support to the Tally Ho wallet extension. I'm currently looking for any part-time, full-time, or freelance as a Web3 or Blockchain developer. If you're interested in working together, please contact me. See more detail here https://www.linkedin.com/in/napat-charuphant/

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Tunisia
5 years+ experience

Blockchain developer on EVM based blockchains

Blockchain Developer | Full-Stack Engineer | Innovator I am a highly experienced blockchain developer and full-stack engineer with a strong passion for driving innovation and solving complex problems. As the CEO and Co-Founder of Block++, I have led the integration of blockchain technology in the sports industry, delivering cutting-edge solutions that enhance user experience and operational efficiency. My technical expertise spans across various programming languages and frameworks, including Solidity, JavaScript, TypeScript, Node.js, React, and Rust. I have a proven track record in developing secure and scalable smart contracts, decentralized applications, and blockchain infrastructure. My hands-on experience with Ethereum, Solana, and other blockchain platforms ensures that I am well-equipped to tackle diverse technical challenges. I thrive in dynamic, collaborative environments and have successfully led teams to achieve strategic goals. My experience includes creating Tunisia's first decentralized platform at Dar Blockchain and contributing to Ethereum 2.0 validator node development at Nethermind. I am skilled in system engineering, automation, and monitoring solutions, with a keen focus on security and performance optimization. Driven by a growth mindset and a commitment to excellence, I continuously seek opportunities to learn and innovate. I am excited about the potential of blockchain technology to transform industries and am dedicated to leveraging my skills to contribute to meaningful projects. Key Skills: Blockchain Development: Solidity, Smart Contracts, EVMs, Web3.js, ethers.js Full-Stack Development: JavaScript, TypeScript, Node.js, React, Next.js Blockchain Platforms: Ethereum, Solana, Metaplex DevOps and Automation: Ansible, Terraform, Docker, AWS System Engineering: Linux/Unix, Python, Git Strong problem-solving abilities and leadership skills Contact: Email: [email protected] LinkedIn: Mohamed Dhia Ben Fraj GitHub: mohameddhia

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Serbia
5 years+ experience

Senior Smart Contract Engineer

About Me As a seasoned Solidity smart contract engineer with over 4 years of experience, I bring an in-depth understanding of DeFi, NFTs, DAOs, dApps, blockchain oracles, EVM, cross-chain bridges, layer 2 scaling solutions like optimistic and zero knowledge (ZK) rollups and the wider web3 ecosystem. With a specialty in Solidity smart contract development, I've contributed to numerous web3 and DeFi projects since 2018 and delivered hundreds of production-ready smart contracts while ensuring best practices and security. Combining my technical proficiency with a native-level English fluency, I am a skilled communicator, adept at remote collaboration, and always focused on delivering results in this rapidly evolving sector. Achievements Below are some of my key achievements and results: I built the smart contracts for the Avix Finance protocol, a permissionless tokenized volatility DeFi protocol designed to track the price of VIX on-chain. For the LongTerm Finance protocol, a tokenized index fund protocol that tracks the market capitalization of the entire altcoin market on-chain, I was responsible for developing its entire suite of smart contracts. I also developed the MAJR DAO governance smart contract system from scratch, along with a suite of supporting contracts that enable complex functionalities such as NFT minting and staking, liquidity and staking rewards, on-chain data storage, token vesting, and payment splitters. The smart contracts I've developed have undergone multiple audits by Hacken, a leading smart contract security auditor. Each audit received exceptional scores, consistently above 9 out of 10, with no critical bugs identified. See audit 1 and audit 2 for more details. During my tenure at TokenFlow, I delivered over 50 custom, production-ready smart contracts for various web3 clients. Job expectations I expect to work on exciting tech that will have a genuine impact in the web3 space, and my favorite areas of doing so are currently: omnichain interoperability, layer 2 scaling solutions (especially rollups), liquid staking derivatives (LSDs) and DeFi in general. Aside from that, I expect that my job will be 100% remote, with the option to get paid in popular cryptocurrencies, such as BTC, ETH or stablecoins, and potentially also the option for the token-based compensation. Finally, I really appreciate flexible working hours and asynchronous work environment, and if there is one thing that I'd like to avoid, that's definitely the excessive number of meetings that stop everyone from getting anything actually productive done. If my expertise aligns with your needs, feel free to schedule a call with me directly through Calendly: https://calendly.com/mihailo-maksa/30min

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Brazil
2-5 years experience

Experienced Software Engineer specializing in financial systems, adept at fast learning

As a Senior Software Engineer at Omie, I design and maintain cutting-edge serverless microservices for Enterprise Resource Planning (ERP) systems. I have a Bachelor's degree in Computer Software Engineering from UniCesumar and over two years of work experience in the field. Previously, I was a Senior Software Engineer at Linker, where I developed and maintained microservices for managing banking systems. I have expertise in serverless computing, Docker Swarm, Linux, Bash scripting, and Python. I am passionate about creating scalable, reliable, and efficient solutions that help businesses streamline their operations and optimize their performance. I enjoy working with a diverse and collaborative team that shares my values of innovation, quality, and customer satisfaction.

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China
5 years+ experience

Web3 full-stack | Trading | MEV | Sniper Bot

Hello there I have been working as a full-stack engineer over 7 years with senior experience, especially web3 stuff. So in recent 3 years, my web3 career was fantastic for the client who seek to make his idea regarding blockchain to realistic. You can check my working experiences in my Linkedin profile. If you are looking for a developer for your particular project, let's have a chat in order to complete it properly in time. Thanks Leon

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Pakistan
5 years+ experience

I have done Master degree in Computer Network Security from National University of Computer & Emerging Sciences, Islamabad. Seeking to utilize broad educational and professional background with excellent, analytical, technical and programming skills to thrive as a professional. Self-directed and motivated Software Engineer who works effectively in a dynamic environment.

Hi there! I'm a Lead Blockchain with 4 years of professional experience based in Lahore Pakistan. Previously I've worked as a Blockchain Developer at Ropstam Solutions, SL2Studio, Software Alliance and Pixel2Graphics I'm an expert at Blockchain and web developement and have significant experience using Cardano Blockchain, Plutus smart contract, Cosmos SDK, Ethereum, HyperBC payment gateway, Blockchain APIs, Laravel, PHP, React JS, Redux, DevOps, Github, CI/CD, AWS, Elastic Beanstalk, Chaincode , GO, Java , React.js, Kubernetes, kubernetes secrets, Hyperledger Fabric, Decentralized Applications (DApps), Node.js, JavaScript , Blockchain, Smart Contracts, Blockchain Architecture, Ethereum, Solidity. 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 Blockchain developer. If you're interested in working together, please contact me.

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Ecuador
5 years+ experience

Smart Contract engineer & security auditor.

Hey! I'm a Blockchain Developer with 1 year of professional experience based in Ecuador. My main focus is security for Solidity smart contracts and I have significant experience in this field by having solved some Solidity hacking wargames like Ethernaut and DamnVulnerableDefi, and a recent participation in a sponsored team for Paradigm 2022's blockchain CTF. I’m also currently involved in a side project with an international team where I’m in charge of the security analysis of all the smart contracts involved and development of some. I also participate regularly in smart contract bug bounty contests on Immunefi, Sherlock and Code4rena in my spare time. I also have experience with full-stack Dapps using technologies such as React.js and Next.js for developing NFT marketplaces, a Decentralized Exchange and a course marketplace (among others) for deployment in the Rinkeby testnet. I am looking for an opportunity to apply my skills and abilities with a full time position as a Solidity developer / auditor / researcher in a challenging, growth-oriented position in the blockchain space. If you're interested in working together, don't hesitate to contact me.

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United States
5 years+ experience

Blockchain Contract Hero

Hi there! I'm a frontend and backend developer with 10 years of professional experience based in TR Company. Previously I've worked as a backend developer at GPP Company I'm an expert at node, react, laravel, express, solidity, rust, web3, python and have significant experience using blockchain. I've worked on various Blockchain projects [IN MY SPARE TIME or PROFESSIONALLY]. For example I created a ens system on fantom, browing site on fantom like aave, near eco system (neanauts). I'm currently looking for a [PART TIME / FULL TIME / FREELANCER] as a frontend/backend/contract developer. If you're interested in working together, please contact me.

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China
5 years+ experience

High-skilled/Proven Blockchain Engineer

• Innovative and creative Software engineer with over 10 years of experience in DApps and Web Apps. • Worked as a Blockchain Lead for $2M DeFi project which was deemed as a “diamond standard” by the client. • Full Stack Developer, decentralized application architect, certified Blockchain developer with expertise in smart contracts, also Web development as well. • Well-acquainted with HR methodologies. Strong Skill-sets: Smart Contract / Solidity / Rust / Node.js / React.js / Typescript / Web3.js / Golang / C++ / Python / AI & ML

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Germany
5 years+ experience

A software developer with research background: being a researcher for many years gave me solid skills in solving problems, and reliable background for analyzing code systematically and thoroughly.

Hi there! I'm a smart contract developer and auditor with 1 year of professional experience. Previously I've worked as a developer and auditor at Picnic (https://www.usepicnic.com/). I've worked on various Blockchain projects also in my spare time. I love auditing smart contracts: I am a Secureum Bootcamp alumnus with excellent grades, was in the top 150 on the code4rena leaderboard and had professional experience auditing codes for a web3 startup (https://www.usepicnic.com/). I'm currently looking for a full time job as a smart contract developer or auditor. If you're interested in working together, please contact me.

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Spain
5 years+ experience

Game

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.

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