Mobile Engineer

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

Job summary

A fintech company in Toronto is seeking a Mobile Engineer to build and enhance their React Native application. You will collaborate with product, design, and backend teams, taking ownership of mobile features. This role demands a solid understanding of app performance, security, and user experience in financial applications. Start making a direct impact on how Canadians manage their most important payments in a supportive, fast-paced environment.

Benefits

Early equity in a high-growth company

Supportive team environment

Opportunity to impact financial futures

Qualifications

• 2-3+ years of mobile engineering experience with React Native.
• Experience building and shipping apps to App Store and Google Play.
• Solid understanding of mobile application performance optimization.

Responsibilities

• Build and ship features in React Native for iOS and Android.
• Implement onboarding, authentication, and payments functionalities.
• Optimize app performance including startup time and navigation.

Skills

React Native

TypeScript

Unit testing

CI/CD

Tools

Jest

Expo

Job description

Mobile Engineer

At Chexy, we're reimagining how Canadians manage their largest expenses—like rent, tuition, and insurance—by transforming them into opportunities to build credit, earn rewards, and gain financial flexibility.

We're the first platform in Canada that lets users pay nearly any bill using their credit card or bank account, while unlocking meaningful benefits like cashback, points, and credit-building tools. With $1B+ in annual payment volume and millions of transactions per month, we're now building a best-in-class mobile experience so users can manage their most important payments from anywhere.

About the Role

We're looking for a Mobile Engineer to build and grow Chexy Mobile, 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

Why Join Chexy?

💥 Build products with real financial impact: Your work helps thousands of Canadians manage their most important payments and build better financial futures

💬 Join a tight-knit team: Work directly with founders, engineers, and designers who trust you to make important decisions

📈 Early equity: Access equity in a high-growth fintech company that's just getting started

🛠 Own real impact: Take ownership of mobile features and see direct user feedback and adoption

📍 Toronto office: Work in-office 5 days a week with the team in Toronto

How We Hire

We keep our hiring process clear and human. You'll go through a mix of conversational interviews and technical assessments designed to showcase your strengths. We care about how you think, how you've built mobile features, and how you collaborate—not just trivia questions. And we make sure there's space for your questions too.