Mobile Engineer — React Native

Role Overview

Sekai is seeking an AI-native Mobile Engineer to build the next generation of its mobile experience, focused primarily on React Native. You’ll work across core mobile product surfaces, improving performance, stability, and user experience while using AI tools as part of your daily workflow.

Responsibilities

• Build and ship React Native mobile features end-to-end across Sekai’s core consumer experience
• Work on high-impact product surfaces including:
  • Feed, discovery, creation, play experience
  • Sharing, onboarding, retention, and user engagement
• Improve mobile app performance, stability, responsiveness, and overall quality
• Debug and fix production issues quickly, prioritizing based on user impact
• Collaborate with Product, Design, Backend, and Growth to ship mobile experiences
• Integrate React/web-based interactive content into the mobile app when needed
• Use analytics, logs, crash reports, and user feedback to identify and solve issues
• Use AI aggressively for development, debugging, prototyping, testing, and iteration
• Help shape Sekai’s long-term mobile architecture as the product scales

Requirements

• 3+ years of professional software engineering experience (ideally mobile or consumer-facing)
• Strong hands-on experience with React Native
• Proficiency with TypeScript/JavaScript
• Experience shipping production mobile apps on iOS and/or Android
• Solid understanding of mobile architecture, navigation, state management, API integration, release cycles, and app store deployment
• Strong product sense and mobile user experience focus
• Ability to debug independently and move quickly from issue discovery to shipped fixes
• Highly AI-native, comfortable using modern AI coding tools (e.g., Cursor, Claude Code, Codex, or similar)
• Strong ownership mindset in an ambiguous, fast-paced startup environment

Nice to Have

• Android native experience (Kotlin/Java, Android SDK, Jetpack Compose)
• Android performance optimization (startup time, scrolling, memory, crash rate, ANR, low-end devices)
• Hybrid architecture experience (React Native + native modules, WebView, native bridges)
• Experience with Flutter (including migration to/from React Native)
• Background in mobile-first consumer/social/UGC/gaming/entertainment/creator or feed-based apps
• Mobile analytics/crash/performance tools (e.g., Firebase, Amplitude, GA4, Sentry, Datadog, Android-specific tools)