Develop and maintain high-security mobile applications (React Native, Swift, or Kotlin). Implement biometric authentication and secure key storage, collaborate with cross-functional teams to deliver features, troubleshoot and optimize app performance, and propose improvements based on emerging technologies.
Summary: Join a leading non-custodial wallet provider committed to bringing the next billion users into the world of decentralized finance (DeFi). We are seeking a talented mobile application developer to build high-security mobile applications and implement advanced biometric authentication and secure key storage solutions.
Responsibilities:
- Develop and maintain high-security mobile applications using React Native, Swift, or Kotlin.
- Implement and enhance biometric authentication features to ensure user security.
- Design and manage secure key storage systems.
- Collaborate with cross-functional teams to define, design, and deliver new features.
- Troubleshoot and debug to improve application performance.
- Stay updated with emerging technologies and propose enhancements to improve user experience.
Required Skills:
- 3+ years of experience in mobile application development using React Native, Swift, or Kotlin.
- Strong understanding of mobile security principles and best practices.
- Experience with implementing biometric authentication.
- Knowledge of secure key storage methodologies.
- Excellent problem-solving skills and attention to detail.
- Strong communication and teamwork abilities.
Similar Jobs
Aerospace
Design, build, and maintain cross-platform mobile apps using Flutter, and implement platform-specific features in Kotlin and Swift. Integrate REST APIs and third-party SDKs, optimize performance, troubleshoot production issues, participate in design reviews, and contribute to CI/CD and automated testing to deliver scalable, high-quality mobile experiences.
Top Skills:
AndroidCi/CdClean ArchitectureDartFlutterGitiOSJSONKotlinMvcMvvmRestful ApisSwiftThird-Party Sdks
Blockchain • Fintech • Cryptocurrency
Build and maintain high-performance mobile trading experiences (React Native and native iOS/Android), design real-time streaming UIs (orderbooks, charts, P&L), extend shared components to web (React/TypeScript), collaborate on backend integrations (gRPC, WebSocket, FIX) and contribute backend code as needed. Own projects end-to-end, partner with product/design, and make architecture decisions for trading workflows across crypto, equities, and prediction markets.
Top Skills:
AWSFixGoGraphQLGrpcJavaKotlinKubernetesReactReact NativeRestScalaSwiftTypescriptWebsocket
Fintech • Financial Services • Cryptocurrency
Build and maintain OKX's mobile apps (iOS/Android and cross-platform), ship scalable features for millions of users, optimize performance, collaborate with design/product/global teams, document systems, and incorporate AI tools into engineering workflows.
Top Skills:
AndroidClaude CodeCodexFlutteriOSJavaJavaScriptKotlinLuaObjective-CReactnativeSwift
What you need to know about the Singapore Tech Scene
The digital revolution has driven a constant demand for tech professionals across industries like software development, data analytics and cybersecurity. In Singapore, one of the largest cities in Southeast Asia, the demand for tech talent is so high that the government continues to invest millions into programs designed to develop a talent pipeline directly from universities while also scaling efforts in pre-employment training and mid-career upskilling to expand and elevate its workforce.


