Senior Native Mobile Developer (iOS & Android)

Senior Native Mobile Developer (iOS & Android)

Senior Native Mobile Engineer (iOS & Android)

(Fully REMOTE)

Required Skills : Native iOS (Swift / Objective-C), Native Android (Kotlin / Java)

At ExpiWell, we are transforming how organizations gather real-time, in-the-moment insights about human experiences. Our Experience Sampling Methodology (ESM) platform relies on high-performance native mobile apps to capture dynamic and contextual data on iOS and Android devices using native features like sensors and location services.

We're seeking a highly experienced Senior Native Mobile Engineer who is proficient in developing and maintaining robust, high-quality applications for both iOS and Android . While the role is mobile-focused, you will also work with our full-stack architecture ( NestJS, Apollo GraphQL, MongoDB ) to ensure seamless integration and data flow. If you have deep expertise in native mobile development and a strong full-stack foundation, this role is for you.

Native Mobile Development (Primary Focus)

• Lead the development, maintenance, and architecture of two separate, high-performance native applications : one for iOS (using Swift) and one for Android (using Kotlin / Java) .
• Integrate deeply with native APIs for advanced mobile features, including background processing, sensor triggers, geofencing, and real-time data collection.
• Ensure applications adhere to the latest platform best practices, design guidelines (Material Design, Apple Human Interface Guidelines), and performance standards.
• Implement robust mobile data synchronization, offline capabilities, and secure storage mechanisms.
• Collaborate closely with UI / UX designers to translate designs into pixel-perfect, accessible user interfaces.
• Oversee mobile deployment processes, including app store submissions (Apple App Store and Google Play Store).
• Integrate the mobile apps with the backend primarily using Apollo GraphQL queries and mutations via NestJS.
• Collaborate on migrating legacy API endpoints to NestJS with full TypeScript typing .
• Complete the Apollo GraphQL certificate training (Parts 1 to 4) to ensure best-practice implementation.
• Assist in maintaining our AWS infrastructure and optimizing the MongoDB architecture for global scale.
• Write comprehensive unit and integration tests (e.g., XCTest, JUnit) for mobile code, and contribute to backend testing (Jest).

Native Mobile Stack (Expert Level)

Backend & Core Stack

What Makes You Great for This Role

How to Apply

Submit your application with :

What We Offer :

Seniority level

Mid-Senior level

Employment type

Full-time

Job function

Engineering and Information Technology

Industries

Software Development

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