Staff Mobile Engineer (Consumer App)

The role

You will lead the architecture, design system, and engineering practices for a Flutter app on iOS and Android. You will build interactive trading experiences and foundations for testing, analytics, and feature flags.

What you will do

• Own the architecture and long-term evolution of Moonshot's Flutter app across iOS and Android.
• Design, implement, and maintain a company-wide mobile design system and component library.
• Build highly interactive trading experiences including live prices, charts, and portfolio views.
• Drive mobile performance and reliability through profiling and optimization.
• Implement and maintain automated testing and help define release and QA processes.
• Collaborate with Product and Growth to integrate analytics, A/B testing, and feature flags.
• Partner with Backend/Platform engineers on API design, data models, and resilience.
• Lead through code reviews, design docs, and mentorship.
• Participate in on-call rotations for mobile-related incidents.

Required qualifications

• 6–10+ years of professional mobile development
• Experience owning large-scale consumer apps end-to-end
• Strong understanding of mobile architectures
• Demonstrated experience building or leading design systems / UI libraries
• Solid engineering fundamentals: testing, CI/CD for mobile, monitoring, and release management
• Strong collaboration skills and experience mentoring other engineers

Nice to have

• 3+ years of Flutter in production or otherwise React Native, Kotlin, Swift
• Experience in fintech, trading, or similarly demanding domains
• Experience with real-time data (WebSockets/streams) and highly interactive UIs
• Exposure to growth-focused mobile work: experiment frameworks, deep links, attribution
• Crypto/DeFi or trading experience, or other high-frequency transactional apps

Benefits

• Competitive salary and meaningful equity
• 5% 401(k) match
• Health benefits with employer-covered premiums
• Life insurance coverage
• One-time office setup stipend
• Flexible PTO

About the company

Moonshot is the “Robinhood for DeFi”—an iOS and Android app that lets anyone trade cryptocurrencies on-chain through a user-friendly interface. Their mission is to make moonshots possible for everyone.