Senior Android Developer - Cryptographic

As a Senior Android Developer at Binance, you own the feature development and architecture optimization of the MPC Wallet Android client. You work on security-critical modules including key management, MPC signing flows, and device binding, collaborating across iOS, backend, and Web teams to ensure a world-class cryptocurrency wallet experience.

What you'll do

• Own feature development and architecture optimization of the MPC Wallet Android client, ensuring code quality and maintainability
• Implement client-side security modules including key management, MPC signing flows, and device binding
• Align interfaces (API/Proto) with iOS, backend, and Web teams to ensure multi-platform consistency and compatibility
• Continuously optimize app startup speed, memory usage, network requests, and UI rendering performance
• Write unit and integration tests, participate in code reviews, and drive engineering standards and CI/CD pipeline development
• Track new technologies in the Android ecosystem and evaluate suitable tools and frameworks for the team

What you bring

• 5+ years of native Android development experience with a track record of shipping commercial products end to end
• Proficiency in Kotlin as your primary language, with familiarity in Java
• Solid command of Android SDK and Jetpack components including Lifecycle, ViewModel, Navigation, Room, and WorkManager
• Experience with Jetpack Compose or traditional View system and the ability to independently build complex UI
• Familiarity with common architecture patterns such as MVVM, MVI, and Clean Architecture
• Experience with networking frameworks such as OkHttp and Retrofit, serialization frameworks like Protobuf and JSON, and dependency injection tools like Hilt or Koin
• Familiarity with Android security mechanisms including KeyStore, encrypted storage, certificate pinning, and code obfuscation and hardening
• Good code review habits and familiarity with Git workflows including feature branching and PR review
• Proficiency with AI-assisted tools such as GitHub Copilot, Cursor, or ChatGPT to boost development efficiency
• Strong communication skills and the ability to collaborate effectively with multi-platform teams

Nice to have

• Understanding of major blockchains such as BTC, ETH, and Solana, or experience with wallet apps or DApps
• Knowledge of cryptography fundamentals including symmetric and asymmetric encryption, digital signatures, key derivation standards like BIP-32/39/44, and MPC or TSS concepts
• Experience with React Native, WebView bridging, JS Bridge development, or familiarity with JavaScript and TypeScript
• Experience integrating Go libraries via gomobile, such as Go-based MPC core libraries, and understanding of cross-language binding and debugging
• Experience with financial-grade or custody-grade products and understanding of compliance, audit, and risk control requirements
• Knowledge of Android reverse engineering and security protection including Android cracking, reverse analysis, Hook, Root/Jailbreak detection, anti-debugging, memory protection, and data leak prevention
• Experience with CI/CD pipelines such as GitHub Actions, Fastlane, and automated testing
• Experience integrating LLM or AI Agents into development workflows for code generation, code review, automated testing, or documentation, or understanding of prompt engineering

What we offer

• Competitive salary and company benefits
• Work-from-home arrangement, which may vary depending on the work nature of your business team

About Binance

Binance is the world's leading cryptocurrency exchange by trading volume and registered users, trusted by 300+ million people across 100+ countries. The company provides a comprehensive range of services from trading and finance to education, research, payments, institutional services, and Web3 features, building an inclusive financial ecosystem powered by blockchain technology.