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Sage Grey Technologies is a Nigerian Company incorporated as a Venture Studio for technology startups and investments. A technology provider that creates impact by developing and deploying practical and sustainable solutions across various sectors.

We are recruiting to fill the position below:

Job Title: Mobile Developer (React Native + Expo)

Location: Lagos (Remote)
Employment Type: Contract

About the Role

  • We are looking for a skilled and passionate Mobile Developer with strong experience in React Native and Expo to join our engineering team.
  • The ideal candidate will be responsible for building high-quality, scalable, and user-friendly mobile applications for both iOS and Android platforms.
  • You will work closely with product managers, designers, and backend engineers to deliver reliable mobile experiences while ensuring performance, security, and maintainability.

Responsibilities

  • Design, develop, and maintain cross-platform mobile applications using React Native and Expo.
  • Build reusable, scalable, and efficient mobile components.
  • Convert UI/UX designs into responsive and pixel-perfect mobile interfaces.
  • Integrate RESTful APIs and third-party services.
  • Implement authentication flows, push notifications, deep linking, and app navigation.
  • Manage application state using modern state management solutions.
  • Optimize mobile applications for performance, speed, and reliability.
  • Debug and resolve application issues across Android and iOS devices.
  • Handle mobile app builds and deployments using Expo Application Services (EAS).
  • Publish and manage applications on Google Play Store and Apple App Store.
  • Collaborate with backend developers to define and integrate APIs.
  • Write clean, maintainable, and well-documented code.
  • Participate in code reviews and follow mobile development best practices.

Requirements

  • Strong experience building mobile applications with React Native.
  • Hands-on experience with Expo framework and Expo Application Services (EAS).
  • Strong knowledge of JavaScript and TypeScript.
  • Experience with React Hooks and functional components.
  • Understanding of mobile application architecture and lifecycle.
  • Experience with navigation libraries such as React Navigation.
  • Experience with state management tools (Redux, Zustand, Context API, or similar).
  • Ability to integrate REST APIs and third-party SDKs.
  • Experience handling local storage solutions such as AsyncStorage, SQLite, or SecureStore.
  • Understanding of mobile authentication and security best practices.
  • Experience debugging applications using React Native development tools.
  • Familiarity with Git and collaborative development workflows.
  • Good understanding of responsive design across different screen sizes.
  • Must have completed NYSC.

Nice to Have:

  • Experience working with native modules.
  • Knowledge of Swift or Kotlin is a plus.
  • Experience with Firebase services (Authentication, Cloud Messaging, Analytics, Crashlytics).
  • Experience implementing maps, geolocation, payments, camera, and media features.
  • Knowledge of CI/CD pipelines for mobile applications.
  • Understanding of App Store and Play Store review processes.
  • Experience with performance monitoring tools such as Sentry.

Technical Stack:
Mobile:

  • React Native
  • Expo
  • TypeScript
  • JavaScript

State Management:

  • Redux / Zustand / Context API

APIs & Services:

  • REST APIs
  • Firebase
  • Push Notifications
  • Third-party SDK integrations

Development Tools:

  • Expo EAS Build
  • Git
  • App Store Connect
  • Google Play Console

Soft Skills:

  • Strong problem-solving skills.
  • Ability to take ownership of mobile features.
  • Attention to detail and user experience.
  • Ability to work independently and collaborate with a team.
  • Passion for building high-quality mobile products.

Apply for this role

Closes Saturday 31 October · 9 days left

The employer receives your email directly. Tap the button to copy the address - status updates come from the employer.

How to apply

Application Closing Date
31st October, 2026.

How to Apply
Interested and qualified candidates should send their Resume to: h***@sagegreytech.com using the job title as the subject of the mail.

What to submit

  • CV / résumé

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