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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 authentication protocols. Proven track record of shipping successful, production-ready mobile applications within the fintech or blockchain/onchain sectors. Strong product intuition, keen attention to UX details, and a high degree of reliability. Excellent communication skills with the ability to collaborate effectively within fast-paced, cross-functional teams. Benefits Competitive compensation package. Remote-first working environment with flexible hours and optional office access. Opportunities for career growth and leadership within a high-growth technology sector. Due to the high volume of applications we anticipate, we regret that we are unable to provide individual feedback to all candidates. If you do not hear back from us within 4 weeks of your application, please assume that you have not been successful on this occasion. We genuinely appreciate your interest and wish you the best in your job search. Commitment to Equality and Accessibility: At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing human-resources@mlabs.city. MLabs Ltd collects and processes the personal information you provide such as your contact details, work history, resume, and other relevant data for recruitment purposes only. This information is managed securely in accordance with MLabs Ltd’s Privacy Policy and Information Security Policy, and in compliance with applicable data protection laws. Your data may be shared only with clients and trusted partners where necessary for recruitment purposes. You may request the deletion of your data or withdraw your consent at any time by contacting legal@mlabs.city.