Senior Web3 Engineer

Posted 20 days agoViewed
EuropeFull-TimeWeb3, Digital Assets
Company:Project Eleven
Location:Europe, GMT to GMT+2
Languages:English
Seniority level:Senior
Skills:
Node.jsSoftware DevelopmentBlockchainCybersecurityEthereumFrontend DevelopmentQA AutomationReact.jsReact NativeTypeScriptUI DesignUser Experience DesignRustWeb3.jsCI/CDDevOps
Requirements:
Strong proficiency in Typescript and modern frontend engineering (e.g. React or similar) Production experience building and publishing browser extensions Strong understanding of EVM/Web3 fundamentals e.g. wallet architecture, JSON-RPC, signature flows, integration with smart contracts Security-minded with experience working with security-sensitive code e.g. key handling, signing flows, storage, encryption Key experience consuming security-critical libraries Demonstrated ability to deliver high-fidelity UI/UX Strong design skills and attention to detail Experience designing component libraries and UX flows Obsession with customer experience and usability testing High ownership and comfortable owning features end-to-end Strong English communication
Responsibilities:
Own the development of user-facing blockchain applications with a strong focus on security, usability, and reliability Design and implement high-quality user interfaces for interacting with blockchain wallets and transaction flows Integrate frontend applications with security-critical core libraries Ensure safe handling of user inputs, permissions, error states, and edge cases in blockchain interactions Collaborate closely with backend, protocol, and security engineers Build and maintain scalable component architectures and frontend state management solutions Ensure applications meet high standards for performance, accessibility, and cross-platform compatibility Participate in usability testing and iterate on designs
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