Mobile Engineer React Native

HRB; Toronto; On-site; CAD 80,000 - 100,000; Full time

Job summary

A financial technology company is seeking a knowledgeable Mobile Engineer to enhance its React Native application for mobile users. In this role, you will design, develop, and optimize features that facilitate user transactions and manage finances efficiently. You should have a strong background in mobile engineering with at least 2-3 years of experience in building applications that handle sensitive user data and ensure reliability across iOS and Android platforms. Competitive benefits package offered.

Benefits

Competitive salary

Flexible working hours

Health benefits

Qualifications

• 2-3+ years of mobile engineering experience building production React Native applications.
• Strong experience with React Native and TypeScript.
• Experience with testing frameworks for mobile applications.

Responsibilities

• Build and ship features in React Native for iOS and Android.
• Optimize app performance including startup time and memory usage.
• Participate in app store submission and release management processes.

Skills

React Native

TypeScript

UI/UX design

Debugging

Communication skills

Tools

Jest

PACT

Expo

Job description

We're looking for a Mobile Engineer to build and grow our Mobile product, our React Native application for iOS and Android. You'll work closely with product, design, and backend teams to ship features that make it effortless for users to pay rent, track rewards, and manage their finances on the go.

This role involves taking ownership of mobile features from design through deployment, building polished user experiences while ensuring performance, reliability, and security in a financial application. You'll build production-grade mobile features that handle real money and real user data, where every interaction needs to be fast, intuitive, and trustworthy.

What You'll Be Doing

• Build and ship features in React Native for iOS and Android
• Implement core flows including onboarding, authentication, payments, and account management
• Work with our TypeScript/NestJS backend APIs to power mobile app features
• Turn Figma designs into polished, accessible mobile UI and interactions
• Handle real-world mobile behavior: loading states, error handling, network issues, offline scenarios, and retries
• Optimize app performance including startup time, navigation, rendering, and memory usage
• Implement mobile-specific features like biometric authentication, push notifications, and deep linking
• Write unit and integration tests using Jest and contract tests using PACT for API integration
• Build and maintain CI/CD pipelines using Expo for automated builds and deployments
• Debug and resolve issues across iOS and Android platforms in development and production
• Collaborate with backend engineers on API design and mobile requirements
• Participate in code reviews and contribute to mobile development best practices
• Work with product and design to iterate on mobile UX and gather user feedback
• Participate in app store submission and release management processes

Who We're Looking For

• 2-3+ years of mobile engineering experience building production React Native applications
• Strong experience with React Native and TypeScript (or JavaScript with TypeScript experience)
• Solid understanding of React patterns including hooks, state management, and component design
• Experience building and shipping apps to the App Store and Google Play Store
• Experience consuming REST APIs from mobile applications and handling responses, errors, and edge cases
• Understanding of mobile fundamentals: navigation, forms, validation, performance optimization, and platform differences
• Experience with testing frameworks (Jest or similar) for mobile applications
• Familiarity with mobile deployment and CI/CD (Expo experience is a plus)
• Understanding of mobile security best practices and data handling for sensitive applications
• Strong attention to detail for UI/UX implementation and accessibility
• Ability to debug platform-specific issues on both iOS and Android
• Strong communication skills and comfort working with designers, product managers, and backend engineers
• Self-directed with ownership mentality and care for app performance, reliability, and user experience

Bonus Points

• Experience with Expo for builds, deployments, and over-the-air updates
• Experience with PACT or similar contract testing frameworks
• Familiarity with mobile analytics, crash reporting, or push notification systems
• Experience building fintech, payments, or financial mobile applications
• Understanding of biometric authentication and secure storage on mobile
• Experience with deep linking and mobile navigation patterns
• Familiarity with native iOS (Swift) or Android (Kotlin) development
• Experience with accessibility features and testing on mobile platforms
• Contributions to open-source React Native libraries or projects
• Design sensibility and experience implementing pixel-perfect mobile UI