Lead Mobile Engineer

Siza- Buso Consulting; New York (NY); Remote; USD 120,000 - 150,000; Full time

Job summary

A leading consulting firm is seeking a Lead Mobile Engineer. You will drive the development of user-facing iOS and Android apps, with a focus on performance, security, and user experience. Ideal candidates have over 8 years of experience, strong expertise in React Native, and a proven record in fintech mobile applications. This position allows for remote work within the US or EU, offering flexibility and the potential for rapid feature development.

Qualifications

• 8+ years in mobile engineering, with experience leading projects.
• Expert in React Native or native mobile languages like Swift and Kotlin.
• Experience with WebAuthn, passkeys, and secure authentication.

Responsibilities

• Lead the design and development of iOS/Android apps.
• Own features from idea to launch to iteration.
• Refine SDKs and cross-platform frameworks for smooth integrations.
• Partner with product and design to ship features fast.

Skills

React Native

iOS development (Swift)

Android development (Kotlin)

Cross-platform development

UX design

Job description

Client is looking for aLead 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 havedeep 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.