Frontend Developer - Web3/DeFi

Position OverviewWe are seeking an experienced Frontend Developer with deep expertise in Web3 and DeFi to join our engineering team. You will be responsible for building intuitive, secure, and high-performance user interfaces for blockchain applications, working with smart contracts, and creating seamless experiences for users interacting with decentralized protocols. This is a key role in shaping the future of our platform.Key ResponsibilitiesDesign and develop responsive, user-friendly frontend interfaces for Web3 and DeFi applicationsBuild interactive dashboards and tools that allow users to interact with smart contracts and blockchain dataIntegrate with blockchain networks via Web3 libraries (ethers.js, web3.js) and wallet providers (MetaMask, WalletConnect, Ledger)Implement real-time data streaming and updates from blockchain networks and protocolsWrite clean, maintainable, and well-tested code with a focus on performance optimizationCollaborate with backend engineers, smart contract developers, and product teams to define UI/UX requirementsImplement security best practices specific to Web3, including transaction validation and wallet securityOptimize frontend applications for gas efficiency and blockchain transaction handlingContribute to architectural decisions and technical documentationStay current with Web3 ecosystem developments, tools, and best practicesRequired Qualifications3+ years of professional frontend development experienceProven expertise with React, TypeScript, and modern JavaScript (ES6+)Strong understanding of blockchain fundamentals, smart contracts, and how DeFi protocols workHands-on experience building Web3 applications using Web3 libraries (ethers.js, web3.js, or equivalent)Experience with wallet integrations (MetaMask, WalletConnect, or other Web3 wallet providers)Familiarity with Ethereum and EVM-compatible blockchainsExperience with state management solutions (Redux, Zustand, Recoil, or similar)Proficiency with CSS/styling solutions and responsive designVersion control with Git and collaborative development workflowsStrong problem-solving skills and attention to detailExperience with testing frameworks (Jest, React Testing Library, Cypress, or similar)Preferred QualificationsExperience with multiple blockchain networks (Polygon, Arbitrum, Optimism, Solana, etc.)Familiarity with popular DeFi protocols (Uniswap, Aave, Curve, Lido, etc.)Knowledge of smart contract architecture and ability to read SolidityExperience with GraphQL and subgraphs (The Graph protocol)Experience with Next.js or other full-stack React frameworksUnderstanding of Web3 security considerations and best practicesContribution to open-source Web3 projectsExperience with blockchain explorers, Hardhat, or other development toolsKnowledge of NFT standards and marketplacesExperience with hardware wallet integrationsFamiliarity with performance monitoring and optimization toolsTechnical SkillsFrontend Frameworks: React (required), Vue.js, Svelte, or similar frameworksLanguages: TypeScript, JavaScript (required)Web3 Libraries: ethers.js, web3.js, wagmi, thirdweb SDK, or equivalentStyling: Tailwind CSS, styled-components, Material-UI, or similarTesting: Jest, React Testing Library, Cypress, or PlaywrightBuild Tools: Webpack, Vite, or similarAPIs: REST, GraphQL, JSON-RPCWallets & Providers: MetaMask, WalletConnect, Coinbase Wallet, SafeResponsibilities DetailBlockchain IntegrationImplement wallet connection flows with proper error handling and user feedbackManage Web3 provider interactions and RPC callsHandle transaction creation, signing, and confirmationParse and display blockchain data (balances, contract state, transaction history)Implement transaction monitoring and status updatesUI/UX DevelopmentCreate intuitive interfaces for complex DeFi operations (swaps, liquidity provisioning, lending/borrowing)Design and build reusable component librariesImplement real-time data visualization and chartsEnsure accessibility and mobile responsivenessOptimize for various screen sizes and devicesPerformance & OptimizationOptimize bundle sizes and load timesMinimize unnecessary blockchain queries and RPC callsImplement efficient caching strategiesIdentify and fix performance bottlenecksOptimize gas estimation and displaySecurityImplement input validation and sanitizationHandle sensitive data (private keys, secrets) securelyValidate transactions before signingImplement rate limiting and abuse preventionKeep dependencies up to date and monitor for vulnerabilitiesWhat We OfferCompetitive salary and equity compensationFlexible work arrangements (remote/hybrid)Professional development budgetHealth insuranceCollaborative, fast-paced environment working on cutting-edge technologyOpportunity to shape the future of decentralized financeMentorship from experienced Web3 developers