Lead Mobile Engineer

Job description

Location: Location: US or EU (remote-first, office optional) (remote-first, office optional) | Full-time Compensation: $140K - $220K We are hiring on behalf of our client, a leading organization in the fintech and blockchain space is seeking a Lead Mobile Engineer to drive the user-facing side of its mobile platform. In this role, the selected candidate will be responsible for designing and building high-performance iOS and Android applications, refining cross-platform frameworks, and crafting intuitive, secure, and trustworthy user interfaces. This position also involves shaping software development kits (SDKs) and developer tools that enhance the core mobile application ecosystem. The ideal candidate possesses deep expertise in mobile development (specifically React Native), strong native iOS/Android knowledge, and sharp UX instincts. Experience shipping production-grade applications within the fintech or Web3/onchain domain is highly preferred, alongside a strong dedication to clean architecture, security, and reliability. The role requires end-to-end ownership of projects, transforming complex requirements into seamless, reliable workflows for both administrators and end-users. Key Responsibilities Lead the end-to-end design, architecture, and development of iOS and Android mobile applications. Own product features through every stage of the software development lifecycle, from initial concept to launch and continuous iteration. Refine SDKs and cross-platform frameworks to support smooth, scalable integrations. Implement fintech-grade user experience (UX) and bank-grade security protocols for mobile wallets. Establish and enforce high engineering standards for performance, code quality, security, and mobile architecture. Partner closely with product management and design teams to rapidly iterate and deliver user-centric features. Maintain clear technical documentation, perform comprehensive code reviews, and mentor team members. Requirements 8+ years of professional experience in mobile software engineering, including a proven track record of leading technical projects. Expert-level proficiency in React Native, with solid experience or knowledge in native mobile development (Swift, Kotlin, etc.). Demonstrated expertise in cross-platform development paradigms and SDK architecture. Hands-on experience implementing WebAuthn, passkeys, and secure authentica…