Senior Mobile Engineer (React Native)

TL;DR

Senior Mobile Engineer (React Native): Building world-class mobile applications for Stripe merchants with an accent on React Native architecture, performance tuning, and AI integration. Focus on designing critical product features, optimizing the render pipeline, and mentoring engineers to elevate code standards.

Location: Barcelona, Spain

Salary: €80,000 - €120,000

Company

Stripe is a financial infrastructure platform for businesses, helping millions of companies accept payments and grow their revenue.

What you will do

• Lead the design and development of critical product features, transforming complex requirements into high-performance mobile experiences.
• Champion the integration of AI and cutting-edge development tools to drive engineering efficiency and code standards.
• Own architectural decisions for the mobile layer, including navigation, state management, and native module integration.
• Drive code quality through rigorous code reviews, clear standards, and a strong testing culture.
• Mentor and support junior and mid-level engineers to help them grow technically and professionally.
• Resolve performance bottlenecks across the JS thread and render pipeline while scaling mobile CI/CD infrastructure.

Requirements

• 5+ years of professional mobile development experience with a strong focus on React Native.
• Strong proficiency in TypeScript and modern JavaScript.
• Solid understanding of mobile app architecture and design patterns (e.g., Flux, Redux, MobX).
• Proven expertise in component architecture, performance tuning, and shipping production applications at scale.
• Excellent problem-solving skills and ability to communicate complex technical concepts clearly.

Nice to have

• Experience with Expo (managed or bare workflow).
• Experience designing and maintaining mobile CI/CD pipelines (e.g., Fastlane, GitHub Actions, Bitrise).
• Experience with backend development using REST APIs and GraphQL.
• Contributions to open-source React Native libraries or the JS mobile ecosystem.
• Familiarity with native iOS (Swift, UIKit) or Android (Kotlin, Android SDK) development.

Culture & Benefits

• Opportunity to work on financial infrastructure that impacts the global economy.
• Collaborative environment focused on engineering quality and architectural integrity.
• High-impact role with the ability to shape mobile development standards at a leading company.
• Culture of AI-assisted engineering and commitment to continuous professional growth.