Senior Mobile Engineer (React Native) - Build Scalable Apps

Mecca Brands; City of Melbourne; On-site; AUD 120,000 - 180,000; Full time

Benefits offered by this job

Health and well-being initiatives

Reward and recognition programs

Quarterly product allowance

Unlimited 40% discount

Job summary

MECCA in Australia is seeking a Senior Mobile Developer to design, build, and scale high-performance mobile apps with React Native, bridging to native iOS (Swift) and Android (Kotlin). You’ll partner with product, design, and QA to translate ideas into delightful experiences.

You’ll own testing, CI/CD improvements, security, and performance profiling, mentoring peers and shaping our mobile platform as part of a collaborative, fast-paced team.

Qualifications

• 5+ years of mobile engineering experience, with strong production experience in React Native.
• Production experience with Expo, including Expo Modules, config plugins, and native app configuration.
• Strong understanding of iOS and Android native development, including Swift, Kotlin, platform APIs, app permissions, push notifications, deep linking, and release workflows.
• Experience building and maintaining shared component libraries or design systems for mobile applications.
• Strong knowledge of mobile UI engineering, including responsive layouts, animations, accessibility, and performance optimisation.
• Practical experience with TanStack Query for server-state management, caching, invalidation, and optimistic updates.
• Experience with Zustand or similar client-state libraries, with a clear understanding of when to separate client state from server state.
• Experience writing automated tests for mobile applications using tools such as Detox, Maestro, Appium, Jest, or React Native Testing Library.
• Strong working knowledge of CI/CD, Git workflows, feature flags, build automation, and continuous delivery for mobile apps.
• Proven experience shipping apps to the App Store and Google Play, including release management, store compliance, staged rollouts, monitoring, crash reporting, and post-release support.
• A strong quality mindset, with experience building secure, resilient, observable, and maintainable mobile applications.
• Clear communication skills, strong technical judgement, and the ability to mentor other engineers.
• Practical fluency with AI-assisted engineering tools, including using AI to accelerate development, testing, debugging, documentation, code review, and technical discovery while maintaining strong engineering standards.

Responsibilities

• Design, build, and maintain high-performance mobile applications using React Native, with strong knowledge of iOS (Swift) and Android (Kotlin) for bridging and optimisation.
• Ensure applications meet scalability, performance, accessibility, and security best practices.
• Collaborate closely with Product Managers, UX/UI Designers, and QA Engineers to translate ideas into seamless mobile experiences.
• Design and implement seamless integrations with backend systems and cloud services, leveraging REST APIs to deliver reliable, scalable, and performant mobile experiences.
• Apply a test-first mindset, building automated tests (unit, integration, E2E).
• Continuously enhance the CI/CD pipeline, enabling fast, reliable, and low-risk releases.
• Optimise app performance through profiling, debugging, and monitoring tools.
• Implement mobile security measures (OAuth, JWT, biometric authentication) and comply with privacy standards.
• Participate actively in code reviews, architecture discussions, and retrospectives, shaping how we evolve as a team.
• Contribute to a culture of learning and excellence, sharing knowledge, mentoring peers, and staying current with mobile technology trends.

Skills

React Native

Expo

Swift

Kotlin

Testing: Detox

CI/CD

Git workflows

Code reviews

AI-assisted engineering

Design systems

Performance profiling

Security

Mentoring

UI performance

Tools

Detox

Maestro

Appium

Jest

RN Testing Library

Expo

Config plugins

RN tooling

Job description

MECCA in Australia is seeking a Senior Mobile Developer to design, build, and scale high-performance mobile apps with React Native, bridging to native iOS (Swift) and Android (Kotlin). You’ll partner with product, design, and QA to translate ideas into delightful experiences.

You’ll own testing, CI/CD improvements, security, and performance profiling, mentoring peers and shaping our mobile platform as part of a collaborative, fast-paced team.