Mobile Engineer

About BurjX

Tech Stack

Responsibilities

• Own the full mobile development lifecycle including architecture, implementation, testing, release management, monitoring, and ongoing optimization
• Build and maintain production-grade iOS and Android applications using React Native, Expo, and TypeScript
• Manage mobile release workflows including app versioning, code signing, provisioning profiles, certificates, TestFlight, App Store Connect, Google Play Console, phased rollouts, and hotfixes
• Design and maintain scalable mobile architecture across state management, routing, API synchronization, caching, secure storage, offline handling, and error recovery
• Build secure and polished user experiences across onboarding, authentication, KYC, wallet management, deposits, withdrawals, trading, notifications, and account settings
• Develop reliable state and networking layers using Zustand, TanStack Query, REST APIs, Axios/Fetch, and WebSockets
• Implement complex forms and validation flows using React Hook Form, Zod, Yup, or equivalent tooling
• Set up and maintain CI/CD pipelines using EAS Build, GitHub Actions, Fastlane, Bitrise, CircleCI, or similar tooling
• Manage OTA updates, release branches, environment configurations, feature flags, rollback strategies, and production deployments
• Integrate and maintain production monitoring tools including Sentry, Firebase Crashlytics, analytics SDKs, and performance monitoring systems
• Ensure app quality through automated and manual testing using Jest, React Native Testing Library, Detox, Maestro, or similar frameworks
• Investigate production incidents, monitor crash reports, debug issues, and coordinate rapid fixes when required
• Collaborate closely with product, design, backend engineering, QA, compliance, and leadership teams to deliver high-quality mobile experiences

Requirements

• 5+ years of mobile engineering experience with strong production experience in React Native, Expo, and TypeScript
• Proven experience shipping and maintaining production mobile applications end-to-end
• Strong understanding of scalable mobile architecture, state management, networking, caching, performance optimization, and mobile security best practices
• Hands-on experience with EAS Build, OTA updates, CI/CD pipelines, app signing, and App Store / Play Store release workflows
• Experience integrating REST APIs, WebSockets, authentication systems, analytics platforms, crash reporting tools, and third-party SDKs
• Strong understanding of iOS and Android platform requirements, mobile UX patterns, and store review processes
• Experience managing production releases, monitoring systems, debugging crashes, reviewing logs, and coordinating hotfixes
• Ability to operate independently and take ownership in a fast-moving startup environment
• Experience in fintech, crypto, trading, banking, payments, wallets, or regulated environments is highly preferred

What We’re Looking For