Client is looking for a Lead Mobile Engineer to drive the user-facing side of their platform. This role is all about mobile: you'll design and build iOS and Android apps, refine cross-platform frameworks, and craft interfaces that feel fast, intuitive, and trustworthy. Candidate must have deep mobile expertise (React Native), native iOS/Android knowledge, and strong UX instincts. 

Responsibilities

• Lead the design and development of our iOS/Android apps.
• Own features from idea to launch to iteration.
• Refine SDKs and cross-platform frameworks for smooth integrations.
• Bring fintech-grade UX and bank-grade security to mobile wallets.
• Set high standards for performance, security, and architecture.
• Partner with product and design to ship features fast.
• Write clear docs, review code, and mentor teammates.

Requirements

• 8+ years in mobile engineering, with experience leading projects.
• Expert in React Native or native mobile (Swift, Kotlin, etc.).
• Skilled in cross-platform development and SDKs.
• Hands-on with WebAuthn, passkeys, and secure authentication.
• Proven record of shipping mobile apps in fintech or on-chain.
• Strong sense of UX, detail-oriented, and reliable.
• Clear communicator who thrives in fast-moving teams.
• Remote - US or EU (remote-first, office optional).
• Based in EST timezone, preferably close to France, Paris is always the major.