5+ years of experience in mobile development with a focus on React Native. Deep understanding of React Native architecture, preferably also exposure to Fabric and TurboModules. Proven ability to architect, build and maintain high-performance, scalable mobile applications. Expertise in application performance optimization, debugging, and profiling. Strong knowledge of TypeScript. Experience publishing and maintaining apps in App Store and Google Play. Hands-on experience in crypto & blockchain development. Strong understanding of Web3 technologies: WalletConnect, EVM networks, RPC, smart contract interaction. Experience with secure key storage, seed phrase handling, encryption, private key management, and cryptography best practices. Experience integrating complex SDKs/APIs, bridging native iOS/Android SDKs. Understanding of ERC standards and token metadata structures. Proven technical leadership experience, including mentoring and architectural guidance. Ability to lead and coordinate a team of React Native developers. Experience collaborating effectively with Product, Design, and Backend teams. Strong communication skills. Experience working with CI/CD pipelines for mobile applications. Ability to manage the full development lifecycle. Expertise in identifying and resolving application bottlenecks and performance issues. Experience building and maintaining robust testing strategies. Ability to research, evaluate, and introduce new technologies and best practices. Strong understanding of mobile security principles. English: Upper-Intermediate or higher.