Senior Mobile Developer (Remote) - United Nations It • Bilbao • Completamente Remoto

Twtspain; Bilbao; A distancia; EUR 50.000 - 70.000; Jornada completa

Descripción de la vacante

A global organization is seeking a Senior React Native Developer to take full technical ownership of their mobile app. This role combines hands-on development with architectural design, requiring a senior profile who can work independently and lead a modern TypeScript/React Native stack. The ideal candidate will have extensive experience in cross-platform development, performance optimization, and effective collaboration across teams.

Formación

• Extensive experience with cross-platform development and performance optimization.
• Solid understanding of networking and RESTful APIs with secure handling.
• Experience with unit and integration testing in mobile environments.

Responsabilidades

• Lead the development and maintenance of the React Native application.
• Architect and implement new features focusing on scalability.
• Collaborate with backend teams to align feature development.

Conocimientos

React Native

TypeScript

React Navigation

Axios

AsyncStorage

i18next

Jest

BrowserStack

Herramientas

Firebase

AppCenter

Sentry

Google Analytics

Descripción del empleo

Senior React Native Developer (Remote) - United NationsWe are seeking a Senior React Native Developer who can take full technical ownership of the UN Booking Hub mobile app, a large-scale cross-platform mobile application under the UN Booking Hub platform. This is a complex role that combines deep hands-on development with an architecture design approach.The developer will act as the technical lead, driving architecture, coding standards, tooling, and implementation across the mobile track. The role requires a senior profile who can work independently, provide strategic input, and apply modern development practices with minimal technical oversight. You’ll be expected to both build and technical design, ensuring that our mobile application evolves with quality and scalability in mind.As a Senior React Native Developer, you will lead the technical design, development, and maintenance of a mission-critical mobile app. You’ll work with a modern TypeScript / React Native stack, integrating advanced navigation flows, internationalization, offline features, and native capabilities. Your role will be both strategic and hands-on, ensuring quality, maintainability, and alignment with the long-term vision of the product manager.Core Responsibilities - Lead the development and maintenance of the React Native application - Architect and implement new features with a focus on scalability and maintainability - Drive best practices in mobile development, including CI / CD, testing, and performance monitoring - Oversee integration with native modules and third-party services (maps, analytics, notifications, etc.) - Ensure technical consistency and quality through code reviews, and tooling - Collaborate with backend and product teams to align feature development and API usage - Act as the technical reference for mobile, proactively resolving architecture and implementation challengesRequired Technical Skills - React Native (advanced) :

Extensive experience with cross-platform development, debugging, and performance optimization - TypeScript :

Strong proficiency with type-safe, modern JavaScript development - Navigation :

Expertise in React Navigation (stack, drawer, modals, deep linking) - State Management :

Solid experience with React Context, custom providers, and hooks - Networking :

Axios and RESTful API integration, including secure token handling - Local Storage :

AsyncStorage, Realm, and offline data strategies - Internationalization :

Familiarity with i18next, react-i18next, and RTL support - Testing :

• Unit and integration testing with Jest, React Native Testing Library;

E2E tools like BrowserStack - CI / CD :

Firebase, AppCenter, OTA updates, and automated mobile deployment pipelines - Native Modules :

Ability to bridge and debug Android / iOS native code when needed - Analytics & Monitoring :

Integration with tools like AppCenter, Firebase, Sentry, Google Analytics - Release Management :

gradual release with monitoring Desirable Skills - Experience with monorepo tools (Nx, Lerna) - Advanced mobile patterns :

background tasks, offline-first design, push notifications - Experience with geolocation and mapping libraries - Accessibility and mobile UX best practices - Performance profiling and optimizationSoft Skills - Strong communication skills across technical stakeholders - Self-driven and proactive in identifying architectural gaps or technical risks - Comfortable taking full technical ownership of a product area

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