Company Description
Client is one of the world's largest e-commerce retailers of health, wellness, and beauty products, serving customers in more than 185 countries. With a catalog of over 30,000 products and general logistics infrastructure, they help millions of people live healthier lives every day. They are growing its engineering organization around an AI-first mandate: using AI not just as a product feature but as the foundation for how they build software, serve customers, and operate the business.

Job Description
Build features for client's iOS and Android apps used by millions of customers globally. The mobile team covers both platforms and engineers with cross-platform experience (React Native or Kotlin Multiplatform) are especially valuable alongside native iOS and Android specialists.

What you will do:
• Ship new features for client's iOS and/or Android apps using AI-assisted development tooling.
• Participate in the mobile modernization effort, contributing to app architecture improvements and new platform capabilities.
• Write maintainable,



well-tested mobile code and own features from design spec through app store release.
• Collaborate with designers and backend engineers to integrate new APIs and product experiences.
• Use Claude Code or equivalent AI tooling daily for code generation, refactoring, and test automation.
• Contribute to cross-platform tooling and shared component libraries as the mobile platform evolves.

Qualifications
• Fluent in English
• 8+ years in Software Engineering.
• Fully autonomous; drives technical decisions within the team; mentors junior engineers.
• Cross-platform mobile experience with React Native or Kotlin Multiplatform.
• Experience shipping apps to the App Store and/or Google Play.
• Understanding of mobile architecture patterns such as MVVM or Clean Architecture.
• AI-driven SDLC (required): hands-on experience shipping production code with AI-assisted development tools such as Claude Code, GitHub Copilot, or Cu

📌 Mobile Software Engineer (Ciudad de México)
🏢 Upwork
📍 Ciudad de México