React Native/Fullstack Engineer

TL;DR

React Native/Fullstack Engineer: Building high-performance, scalable mobile applications using React Native and Native languages with an accent on technical excellence and code quality. Focus on acting as a bridge between Native and JavaScript worlds and embracing global product ownership from CI/CD to release.

Location: Onsite in Barcelona, Spain

Company

hirify.global provides high-value IT services for the entire Schwarz Group, one of Europe's largest retail groups including Lidl and Kaufland.

What you will do

• Build high-performance, scalable mobile applications using React Native and Native languages (Swift/Kotlin).
• Act as a bridge between Native and JavaScript worlds, writing custom native modules when required.
• Provide value through conscientious analysis and Pull Request Reviews to maintain a clean and performant codebase.
• Embrace global ownership of the product, from CI/CD pipeline configuration to the release process.
• Collaborate closely with Backend Engineers, Designers, and Product Owners in a cross-functional agile team.
• Propose new ideas, improve existing mobile practices, and proactively contribute to product evolution.

Requirements

• 5+ years of experience as a Mobile Developer with significant focus on React Native is required.
• Strong seniority in React Native, including deep knowledge of its ecosystem, performance optimization, and state management.
• Proven experience in native mobile development (Swift for iOS and Kotlin for Android) and comfort with Xcode/Android Studio.
• Experience writing Native Modules and bridging Native UI components to React Native, understanding the bridge (or JSI/Turbo Modules).
• Advanced knowledge of mobile design patterns, navigation structures, and offline-first strategies.
• Strong habit of creating Unit Tests (Jest), Component Tests, and E2E Tests (Detox/Appium), as well as managing CI/CD Pipelines.
• Experience implementing and analyzing mobile monitoring tools like Crashlytics and Firebase.
• Proficiency in English is required.

Nice to have

• Experience with Backend technologies (.NET, Python).
• Understanding of Cloud platforms (Azure/GCP) and containerization (Docker/Kubernetes).
• Experience in Domain-Driven Design (DDD).

Culture & Benefits

• Join an IT Hub of Europe's Largest Retail Group with diverse and exciting career opportunities.
• Work in a dynamic environment focused on development and progress.
• Be part of a top 5 global retail company serving 6 billion customers across 32 countries.
• Collaborate in cross-functional agile teams.
• Contribute to product evolution and innovation.