Senior Mobile Engineer – Consumer App

Moonshot

. Own the architecture and long-term evolution of Moonshot’s Flutter app across iOS and Android .

Posted 10/6/2026full-timeUnited StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in mobile app architecture and development, particularly with Flutter, while leading design systems and ensuring high performance and reliability in fintech applications. Strong collaboration and mentorship skills are essential for driving team success and maintaining quality standards.

Highest-signal resume keywords

Flutter DevelopmentMobile ArchitectureDesign Systems/UI LibrariesAutomated TestingFintech Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Mobile DevelopmentFlutterReact NativeKotlinSwiftCI/CDState ManagementNavigationModularizationReal-Time Data

Soft Skills

CollaborationMentorship

Tools & Technologies

A/B TestingAnalyticsWebSocketsEvent TrackingMonitoring

Industry Keywords

FintechTradingCryptocurrencyDeFiHigh-Frequency Transactions

Tech Stack

Tools & technologies

AndroidFlutteriOSKotlinReactReact NativeSwift

About the role

Key responsibilities & impact

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 collaboration with Design
Build interactive trading experiences including live prices, charts, order tickets, order history, notifications, and portfolio views
Drive mobile performance and reliability through profiling, frame-rendering optimization, memory/network management, and crash reduction
Implement and maintain automated unit, widget, and integration testing
Help define release and QA processes
Integrate analytics, A/B testing, feature flags, and event tracking into the app with Product and Growth
Partner with Backend/Platform engineers on API design, data models, error handling, retries, fallbacks, and offline behavior
Lead through code reviews, design documents, and mentorship
Participate in mobile on-call rotations and drive root-cause fixes
Contribute to Moonshot’s iOS and Android cryptocurrency trading app, which enables users to trade cryptocurrencies on-chain

Requirements

What you’ll need

6–10+ years of professional mobile development experience
Ideally 3+ years of Flutter in production, or experience with React Native, Kotlin, or Swift
Experience owning large-scale consumer apps end-to-end
Experience ideally in fintech, trading, or similarly demanding domains
Strong understanding of mobile architectures, including state management, navigation, and modularization
Demonstrated experience building or leading design systems/UI libraries in Flutter or other frameworks
Experience with testing, mobile CI/CD, monitoring, and release management
Strong collaboration skills and experience mentoring other engineers
Experience with real-time data, WebSockets/streams, and highly interactive UIs is a nice-to-have
Exposure to experiment frameworks, deep links, and attribution is a nice-to-have
Crypto/DeFi, trading, or other high-frequency transactional app experience is a nice-to-have
Remote candidates must be within NAMER
Work authorization question applies to the USA or Canada

Benefits

Comp & perks

Meaningful equity
5% 401(k) match
Health benefits with employer-covered premiums
Life insurance coverage
One-time office setup stipend
Flexible PTO
Periodic in-person sprints
Travel approximately 1 week per quarter