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We are building a cross-chain DeFi platform for lending and borrowing and need a blockchain expert to refine and secure smart contracts on Ethereum and Solana. Responsibilities: Develop and optimize Solidity and Rust contracts. Implement and audit DeFi security (re-entrancy, flash-loan prevention, oracle manipulation). Integrate with [login to view URL] and [login to view URL] for wallet/transaction flows. Deploy to testnets (Goerli, Solana devnet), then migrate to mainnets. Deliver clean, well-documented code and testing coverage. Required Skills: Solidity, Rust, Smart Contracts [login to view URL], [login to view URL] Ethereum, Solana, DeFi Smart Contract Auditing & Security Engineering Bonus Skills: NFT Development TypeScript / Frontend Integration
Project ID: 39718377
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34 freelancers are bidding on average $60 USD/hour for this job

Hi, I 've check your project " Secure Dual-Chain DeFi Smart Contracts (Ethereum + Solana) " carefully and understood what you want. We will design innovative and sustainable spaces that align with the client's vision and functional requirements. Our approach emphasizes aesthetics, user experience, and environmental responsibility. We will conduct thorough site analysis and feasibility studies to inform the design process. By integrating cutting-edge technology and materials, we aim to enhance both form and function. Collaboration with civil, structural, and MEP engineers will ensure a cohesive and efficient project development. Our team is committed to delivering on time and within budget, ensuring client satisfaction and project success. Best regards, Benjamin
$180 USD in 2 days
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Hi, I am a full-stack developer with 10 years of experience. I use HTML5, CSS3, TypeScript, AJAX, GIT on a daily basis. I have worked with SQL and NoSQL databases, including Oracle, and also with cloud solutions such as Firebase. Over the last 6 months I have implemented a large project - GraphQL API for the Hedera network. It allows to make convenient human-readable queries on various events from the network. This also includes a bunch of related projects - SDK, client dashboard, analytics system, etc. One of my financial projects is Baycraft cаpitаl. It has personal wallets, deposit and withdrawal, bonus calculation and a complex affiliate program. Here are some other examples of my past projects: - ScopeSports - NFT-marketplace and social network with paid access to exclusive content and direct communication with sports athletes. The non-blockchain functionality is a hybrid of Facebook and Discord. Chats, posts with videos or pictures, comments, each athlete and his audience have their own private fan club. - Jamble - a German Tinder-like dating app. The service has a sophisticated matching algorithm based on profile preferences and matching quizzes. Voice/video chats and personal content sharing are available for the premium membership plan. I have a pretty decent amount of projects in my portfolio. I am happy to tell more during a video call.
$50 USD in 7 days
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Hi there, Leveraging my solid experience in blockchain development, smart contracts, and specifically working with Ethereum and Solana, I've been thrilled to ascertain your project's requirements. My proficiency in Solidity and Rust is well-complemented by my experience in amplifying DeFi security, ensuring no re-entrancy or flash-loan risks while minimizing oracle manipulations. I fully grasp the potential vulnerabilities associated with DeFi platforms and possess the required auditing skills to mitigate them effectively. With my blockchain background extending to NFT development as well, I offer extra capabilities that can go beyond the proposed scope, adding value to your project. If you need TypeScript proficiency or frontend integrations, I'm well-versed in those areas too! In conclusion, be it building secure smart contracts for your DeFi platform or exploring further horizons like NFTs or web3 solutions together, collaborating with me means miles ahead in achieving your project goals!
$50 USD in 40 days
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Hi, I just read your job description and I am writing to express my interest in this Blockchain development position. I am a senior software engineer with 6 years of experience in web development and expertise in Solidity. I have extensive experience working on Ethereum, as I lead a team of developers for Moon Swap building a decentralized exchange, including my individual contribution to smart contracts for initializing liquidity pools and rewarding liquidity providers. I have built cryptocurrency and NFT smart contracts for many clients in industries such as real-estate, music, and online gaming. I am well versed in erc20, 721, 1155, and more, and I have completed NFT projects for high profile clients such as Lil Jon, JKicks, MementoMori, and RadWealth. I have worked with complex Defi platforms, cryptocurrencies, and NFTs, including projects such as an online game which combines images for playable character skins storing the image assets on an external server to avoid reminting, NFT lending platforms, and crypto wallet a crypto wallet aggregate combining multiple wallets. I have excellent knowledge of Solidity security, best practices, and exploit management. I believe that my experience makes me a perfect fit for this role, and I am certain that I can help your company build top of the line secure contracts. If you are interested in working with me, please send me a message so we can discuss it further. Thank you, Dmitri
$50 USD in 40 days
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40 hours weekly, I am available for work You will be able to track all work progress through the tracker Hi There! I'm a full-time Blockchain Developer with over 5+ years of experience specializing in DeFi protocol development, smart contract security, and cross-chain integrations. I’ve worked extensively with both Ethereum (Solidity) and Solana (Rust), and I’m excited to contribute to your platform with clean, secure, and scalable smart contracts.
$50 USD in 40 days
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Hi Triharsa A., I recently completed a similar project successfully and I can show you that as a sample. Your project piqued my interest, and I'd love to delve deeper to ensure its success. From your detailed description, it's evident that security and optimization are paramount. This leads me to wonder, how do you envision balancing the complexity of multi-chain functionality with user experience simplicity? Additionally, have you considered utilizing formal verification tools to enhance the robustness of your smart contracts? Based on my experience, I suggest incorporating automated test suites into your development workflow to catch potential vulnerabilities early on. Moreover, leveraging established code review processes, like peer programming or third-party auditing, can provide valuable insights and strengthen the security of your smart contracts. In navigating the Ethereum and Solana ecosystems, I can tailor a step-by-step plan to develop, audit, and deploy your dual-chain DeFi smart contracts seamlessly. My meticulous approach to coding and testing will ensure clean, well-documented deliverables. I look forward to collaborating on this exciting project that lies at the forefront of DeFi innovation. My portfolio is uploaded here and on my website. Best Regards, Sid
$53 USD in 10 days
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