Blockchain Jobs

Overview: We have a Solidity smart contract, and a code review pointed out a vulnerability in it. We're looking for a Solidity developer to fix it. It's a focused, well-defined task — you don't need to be a full-time auditor, just a solid Solidity dev who understands how the common issues work and can patch one cleanly. Full details (contract code + the reported issue + a test setup) will be shared privately with selected candidates. Scope of work: Look at the reported vulnerability and the relevant part of the contract Reproduce / confirm it in a test environment Fix the issue following good Solidity practices Add a test or two showing it's resolved and nothing else broke Briefly explain what the problem was and how you fixed it Requirements: Good working kno...

Overview: We have a Solidity smart contract, and a code review pointed out a vulnerability in it. We're looking for a Solidity developer to fix it. It's a focused, well-defined task — you don't need to be a full-time auditor, just a solid Solidity dev who understands how the common issues work and can patch one cleanly. Full details (contract code + the reported issue + a test setup) will be shared privately with selected candidates. Scope of work: Look at the reported vulnerability and the relevant part of the contract Reproduce / confirm it in a test environment Fix the issue following good Solidity practices Add a test or two showing it's resolved and nothing else broke Briefly explain what the problem was and how you fixed it Requirements: Good working kno...

I'm looking to launch a basic meme coin on a crypto exchange. I need experienced developers who can deliver this ASAP. Requirements: - Basic cryptocurrency creation Ideal Skills and Experience: - Experience in cryptocurrency development - Familiarity with crypto exchange platforms - Ability to deliver high-quality work under tight deadlines Please include detailed project proposals in your application.

I have already purchased a trading script and need an experienced developer to install, configure, and deploy it on my server so that it is fully operational. The scope of work includes: - Complete installation and configuration of the script - Server setup and troubleshooting, if required - Integration and configuration of my custom blockchain within the platform - Ensuring all system components function correctly The project will be considered complete once the script successfully passes its built-in system checks and I am able to log in to the admin dashboard without issues. Upon successful completion, the milestone will be released.

I’m building a new fintech platform and need an experienced Solidity developer to create the ERC20 token that underpins the entire product. Your job is to take the token from concept to mainnet-ready code, ensuring it is fully compliant with the ERC20 specification and written in modern Solidity (0.8.x). You will handle every stage of smart-contract development: architecture, coding, automated testing with Hardhat or Foundry, and deployment scripting for both a public testnet and Ethereum mainnet. Robust security practices are essential—please follow the latest OpenZeppelin patterns and include a concise internal audit so I can verify that common vulnerabilities (re-entrancy, overflow, allowance issues) are addressed. Gas efficiency, upgradeability considerations, and clear ...

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We're looking for a React developer to help us build the front end of a decentralized e-commerce platform. The idea behind the project is fairly straightforward. Online marketplaces have become expensive for sellers and increasingly restrictive for both buyers and merchants. We're building a platform that gives users more control while reducing reliance on intermediaries. Blockchain is part of the solution, but we're not trying to build a product that only crypto users understand. The challenge is creating an experience that feels familiar and easy to use, regardless of what's happening behind the scenes. That's where this role comes in. What You'll Be Working On You'll be helping build the customer-facing side of the platform, including: - Product ...

I’m ready to dive deep into everything required to generate flash-USDT and need a patient expert who can walk me through the process end-to-end. I already understand the basics of blockchain but have never attempted a flash loan or similar USDT operation, so I want guidance that starts with core principles and ends with a hands-on proof-of-concept I can replicate on my own. Here’s what I’d like from you: • A concise overview of how flash loans work specifically with USDT, including network choices (Ethereum, Tron, BSC, etc.) and the pros / cons of each. • Step-by-step instructions to set up the required environment—wallets, Web3 provider, Solidity or Vyper tooling, and an IDE such as Remix, Hardhat, or Truffle. • Annotated sample contracts or s...

Ready to use, Customisable Cryptocurrency exchange(website/App) required. Payin and Mass-Payout transactions(through excel sheet of payees) around the world in XYZCOIN through XYZWALLET in XYZEXCHANGE should start in my website . Thenafter XYZCOIN Should be able to convert in ANYCOIN for Fiat through P2P. Mass-Payout transactions(through excel sheet of payees) most required functionality. XYZCOIN exists on Etherium blockchain.

We are seeking an experienced developer to analyze and update our existing DAO (Decentralized Autonomous Organization) project. The ideal candidate will have strong expertise in blockchain technologies, smart contracts, and full-stack development. Responsibilities: - Review and assess the current state of the DAO project - Identify areas for improvement and optimization - Implement updates and enhancements using , Node.js, and relevant blockchain technologies - Work with Smart Contracts and ensure they are secure and efficient - Integrate APIs to enhance functionality and user experience - Collaborate with our team to deliver high-quality, reliable updates Requirements: - Proven experience with and Node.js - Strong understanding of blockchain technology and smart contract development - ...

I’m ready to launch a cryptocurrency news platform that mirrors the overall look-and-feel of while adding my own branding and content. The core build should include: • Automated news aggregation that pulls vetted crypto headlines in real time. • A blog section where my editorial team can publish long-form analysis, guides, and opinion pieces. • Live market data widgets (prices, charts, market-cap tables) integrated from a reliable API. Because the audience follows fast-moving markets, I need pages to load quickly, display flawlessly on mobile, and flow with intuitive navigation so readers can jump from breaking news to price charts in one tap. Replicating layout is the starting point—sticky header, multi-column home layout, category hubs, social-share el...

我正在筹备一款金融类 DeFi 去中心化应用，需要一位经验扎实的开发者负责整套智能合约开发。核心目标是用安全、可拓展的代码实现产品的业务逻辑，并确保合约能够顺利部署到主网。 工作重点 • 智能合约开发：根据功能需求完成 Solidity 合约（或适合的链上语言），涵盖核心交易逻辑、手续费、权限控制以及紧急暂停等安全机能。 • 单元与集成测试：使用 Hardhat / Foundry / Truffle 等主流框架编写全面测试，提高覆盖率，防止常见攻击向量（如重入、闪电贷）。 • 文档与部署脚本：提供清晰的 README、函数说明、部署与升级步骤，方便后续审计与运维。 • 安全与最佳实践：遵循 OpenZeppelin 标准库、Solidity 最新规范，避免整数溢出、重入等风险。如能协助对接第三方审计更佳。 我对交付时间没有硬性限制，重视质量优先。请在提案中简述相关 DeFi 项目经验、常用工具栈，以及能初步交付的里程碑。期待与你合作，共同打造一款安全可靠的 DeFi 产品。