Mobile Engineer

About The Role

As a Senior / Staff Mobile Engineer at Moonshot, you will lead the evolution of our iOS and Android trading experience. You will own the architecture, design system, and engineering practices for our Flutter app, driving high performance and reliability across live trading experiences such as live prices, charts, order tickets, order history, notifications, and portfolio views. There are two archetypes – Design System & UX Leader or Growth & Analytics Mobile Lead – and you will ship interactive, performant trading experiences while building the foundations (testing, analytics, feature flags) that empower the entire team to move quickly and safely.

• 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 in close collaboration with Design.
• Build highly interactive trading experiences: live prices, charts, order tickets, order history, notifications, and portfolio views.
• Drive mobile performance and reliability: profiling, optimizing frame rendering, managing memory/network usage, and minimizing crashes.
• Implement and maintain automated testing (unit, widget, integration) and help define release and QA processes.
• Collaborate with Product and Growth to integrate analytics, A/B testing, feature flags, and event tracking directly into the app.
• Partner with Backend/Platform engineers on API design, data models, error handling, and resilience (retries, fallbacks, offline behaviour).
• Lead by example through code reviews, design docs, and mentorship, raising the bar for mobile excellence.
• Participate in on‑call rotations for mobile‑related incidents and drive root‑cause fixes.

• 6–10+ years mobile development experience.
• 3+ years Flutter experience (React Native, Kotlin, Swift acceptable;