React Native Developer
New
Warszawa, PLFull-TimeMiddle
SalaryUp to 128 pln/h net + VAT, B2B
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Job Details
- Languages
- Polish B2, English B2
- Required Skills
- AndroidReact NativeTypeScriptREST APICI/CDiOS
Requirements
- Experience in developing and shipping production-level React Native and TypeScript apps.
- Solid understanding of mobile platform fundamentals, especially for Android.
- Ability to work with native modules and tackle build issues in both Android and iOS environments.
- Hands-on mobile security practices and familiarity with OWASP MASVS.
- Strong experience with REST API integration and JWT authentication.
- Experience in quality assurance and performance optimization for mobile apps.
- Background in fintech or high-trust domains where security is paramount.
Responsibilities
- Develop and maintain a mobile application with core features like onboarding, wallet top-up, payments, and transaction history.
- Collaborate with backend teams to ensure seamless REST API integration and enforce money rules server-side.
- Implement device-level security measures, ensuring secure token storage and biometric support.
- Optimize application performance on low-end devices and poor network conditions.
- Integrate third-party SDKs for enhanced functionalities, such as eKYC and push notifications.
- Participate in the complete lifecycle of mobile app deployment, including testing, CI/CD processes, and submission to app stores.
- Adapt the app to multiple country/brand wallets through a white-label codebase.
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