At MECCA, we’re reimagining how beauty and technology meet - and mobile is at the heart of this transformation. As a Senior Mobile Developer, you’ll play a pivotal role in delivering seamless, scalable, and delightful mobile experiences for our customers. 

You’ll bring deep technical expertise in React Native development, along with a passion for continuous improvement, experimentation, and collaboration. This is more than just building features - you’ll help shape our mobile platform, optimize performance, and champion engineering quality while working closely with other mobile developers, product managers, designers, and backend teams. 

We’re looking for someone who thrives on complexity, embraces modern engineering practices, and never stops learning. Whether you’re profiling app performance, experimenting with new tools, or mentoring peers, you’ll be encouraged to innovate, challenge assumptions, and grow in a collaborative, fast-paced environment. 

• 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. 

• Experience working with .NET or C#-based backends and web technologies. 

• Exposure to AI/ML concepts or libraries, or interest in experimenting with AI in real products 

• Experience with observability tools (e.g., Datadog, New Relic, or similar) 

• Experience working with an e-commerce platform 

• Familiarity with serverless architecture or container-based deployment in AWS 

• Understanding of TDD, QA-as-code, and shift-left testing approaches