Senior Frontend Engineer (Tech Lead)

Requirements

• 8+ years of software development experience, including at least 5 years of mobile client-side development experience
• Proficient in at least one native technology track — iOS/Swift or Android/Kotlin
• Hands-on production experience with the other mobile platform, able to own architecture design and code review
• Experience with large-scale React Native production projects; solid grasp of TypeScript, React, state management, native modules, and hybrid app architecture
• Familiar with React Native performance optimization, version upgrades, platform compatibility, and crash/exception monitoring
• Strong client-side fundamentals: networking, caching, concurrency, storage, security, and lifecycle management
• Familiar with App Store and Google Play release processes and mobile CI/CD pipelines
• Has led or been deeply involved in at least one AI agent-related feature end-to-end — requirements analysis, technical design, model/tool integration, development and integration testing, and post-launch iteration
• Understands core engineering considerations for LLM applications, including prompting, context management, tool calling, streaming output, graceful degradation, evaluation, and safety boundaries
• Concrete experience applying AI coding tools to improve productivity, able to speak to use cases, team workflow, quality control methods, and measured results
• Experience as a Tech Lead, small-team lead, or in engineering management
• Able to make sound trade-off decisions among delivery speed, technical debt, user experience, and system quality
• Comfortable working across countries, cultures, and time zones

Nice to Have

• Experience in consumer internet, social, content, AI, tools, or mobile-first products
• Experience building a client-side product or engineering team from 0 to 1
• Experience managing performance and stability for products with 1M+ users
• Familiar with the React Native new architecture — Fabric, TurboModules, or Hermes
• Familiar with web front-end technologies, or backend development skills in Node.js, Go, Java, or Python
• Experience with internationalization, multi-language support, payments, account systems, push notifications, subscriptions, or privacy compliance