[All remote jobs](https://jobicy.com/jobs.md)Open role[![Binance logo](https://jobicy.com/data/server-nyc0409/galaxy/mercury/2025/06/bc822f38-221.jpg)](https://jobicy.com/company/binance.md)Remote opportunity at[Binance](https://jobicy.com/company/binance.md) # Client Full-Stack Engineer — IM Chat Platform, Android Focus Review the role, location requirements, compensation details, and application process before deciding whether this opportunity fits your next career move. [Apply for this job](#job-application)[View company](https://jobicy.com/company/binance.md)Share1 Aug 2026Published25Listing views2Application actionsManually reviewedTrust & Safety status Opportunity details ## About this role. AI SummaryBinance is seeking a Client Full-Stack Engineer to build and maintain client-side applications for its instant messaging platform, with Android as the primary focus. The role involves designing core messaging features such as real-time chat, group chat, offline messaging, and push notifications, while leveraging AI-powered tools like Cursor and Copilot to work across iOS and Web codebases. The ideal candidate has solid Android production experience (Kotlin/Java), familiarity with real-time communication protocols (WebSocket/MQTT/gRPC), and a deep understanding of messaging concepts like delivery, sync, and local persistence. This is a remote-friendly, results-driven position within a fast-paced blockchain ecosystem, offering opportunities for career growth and collaboration with world-class talent. The role emphasizes a proactive, ownership-driven mindset and the ability to thrive in a dynamic, autonomous environment. ## Role DNA A quick view of the complexity, pace, ownership and collaboration implied by the job description. ### Job Complexity 4/5EasyHard ### Pace & Pressure 5/5RelaxedFast-paced ### Autonomy Level 4/5GuidedFull ownership ### Communication Load 4/5IndependentCollaborative AI insightThe role demands advanced Android expertise, knowledge of multiple real-time communication protocols, and the ability to debug and modify iOS/Web codebases with AI assistance, which is technically complex. Additionally, familiarity with IM-specific concepts and performance optimization makes this a challenging position, though not the absolute hardest due to the support of AI tools and collaborative environment. ## Salary analysis Estimated compensation compared with the broader US market for similar roles. Estimated job medianHighly competitive$155,000US market range$110k–$200k0$220k AI insightThe offered salary is not specified, but for a senior full-stack engineer with Android focus and IM experience, the US market range is typically $110k-$200k. Binance is known for competitive compensation, and given the specialized nature of the role and the required cross-stack capabilities, a median of $155k is a reasonable estimate. The salary is likely to be attractive to experienced engineers, especially with the added value of remote work and the blockchain industry's premium. ## Core skills Skills and capabilities most closely associated with this opportunity. [Android](https://jobicy.com/jobs?search_keywords=Android.md)[Kotlin](https://jobicy.com/jobs?search_keywords=Kotlin.md)[Jetpack Compose](https://jobicy.com/jobs?search_keywords=Jetpack%20Compose.md)[WebSocket](https://jobicy.com/jobs?search_keywords=WebSocket.md)[MQTT](https://jobicy.com/jobs?search_keywords=MQTT.md)[gRPC](https://jobicy.com/jobs?search_keywords=gRPC.md)[AI-assisted development](https://jobicy.com/jobs?search_keywords=AI-assisted%20development.md)[IM systems](https://jobicy.com/jobs?search_keywords=IM%20systems.md)[Cross-platform development](https://jobicy.com/jobs?search_keywords=Cross-platform%20development.md)[Performance optimization](https://jobicy.com/jobs?search_keywords=Performance%20optimization.md) Cover letter sampleDear Hiring Team, I am writing to express my strong interest in the Client Full-Stack Engineer position at Binance, focusing on the IM Chat Platform with Android as the primary platform. With [X] years of production experience in Android development using Kotlin and Java, and a deep understanding of Jetpack components and modern client architecture, I am excited about the opportunity to build scalable and reliable messaging features for a global user base. My background includes developing real-time chat systems, integrating WebSocket and MQTT protocols, and implementing offline-first experiences with local persistence and push notifications. I am also proficient in leveraging AI-powered tools like Cursor and GitHub Copilot to efficiently read, debug, and modify iOS and Web codebases, enabling me to contribute across platforms and ensure a consistent user experience. I thrive in fast-paced, autonomous environments and have a strong track record of collaborating with backend teams on API design and production issue resolution. I am particularly drawn to Binance's mission to advance financial freedom and would be honored to contribute my technical skills to a world-class team. Thank you for considering my application. I look forward to the opportunity to discuss how my experience aligns with the needs of your team. Sincerely, [Your Name] Copy Sample interview questionsDescribe your experience with building real-time messaging features. How would you handle message delivery guarantees and offline synchronization in a chat app?In my previous projects, I implemented real-time chat using WebSocket for live updates and REST for fallback. To ensure delivery guarantees, I used message IDs and acknowledgments, with a local outbox for pending messages. For offline sync, I employed a local database with a sync engine that reconciles message state when connectivity is restored, using timestamps and sequence numbers to resolve conflicts. How do you approach debugging and modifying code in an unfamiliar codebase, such as iOS or Web, especially with AI tools? I start by understanding the architecture and key data flows, then use AI tools like Cursor or Copilot to navigate and generate explanations of specific functions. I write small test changes to validate assumptions, and use logging and debugging tools on both platforms. AI assistants help me translate between languages and identify logical equivalencies, but I always review and test the changes thoroughly. Can you explain the pros and cons of using MQTT versus WebSocket for a large-scale IM platform? MQTT is lightweight, supports QoS levels and persistent sessions, making it ideal for unreliable networks and lower battery/power consumption. It also allows pub/sub semantics, which scales well for group messaging. WebSocket is more universally supported and easier to debug, but lacks built-in QoS. For a large-scale platform, MQTT is often preferred for mobile clients, while WebSocket may be used for web clients. I would choose based on the network conditions and scalability requirements. Describe a time you optimized a mobile app's performance. What steps did you take and what metrics improved? I profiled an Android app using Android Studio Profiler, identified memory leaks and excessive main-thread work. I implemented lazy loading for list items, optimized image loading using Coil with caching, and replaced repeated calculations with WorkManager for background processing. This reduced startup time by 25% and improved frame rate stability from 45 to 60 FPS. I also reduced network chatter by batching API requests. How do you stay up-to-date with the latest Android and AI development tools, and how would you integrate them into your workflow? I regularly follow Android developer blogs, GitHub repositories, and attend local meetups. I use AI tools daily for code completion, refactoring, and writing unit tests. For example, I use Cursor to generate boilerplate and to explain unfamiliar code, then I verify and customize it. I also experiment with new libraries for KMP or Jetpack Compose. Staying adaptable is key in the rapidly evolving AI landscape. Binance is a leading global blockchain ecosystem behind the world’s largest cryptocurrency exchange by trading volume and registered users. We are trusted by 300+ million people in 100+ countries for our industry-leading security, user fund transparency, trading engine speed, deep liquidity, and an unmatched portfolio of digital-asset products. Binance offerings range from trading and finance to education, research, payments, institutional services, Web3 features, and more. We leverage the power of digital assets and blockchain to build an inclusive financial ecosystem to advance the freedom of money and improve financial access for people around the world. ## Responsibilities * Design, develop, and maintain client-side applications for an instant messaging platform, with Android as the primary focus * Build core messaging features: real-time chat, group chat, media messaging, message sync, offline messaging, push notifications * Participate in client-side architecture design, ensuring consistent UX across Android, iOS, and Web * Use AI-powered tools (Cursor, GitHub Copilot, ChatGPT, Claude, etc.) to support cross-stack frontend development — read, debug, and modify iOS/Web codebases * Integrate RESTful APIs and WebSocket/MQTT/gRPC real-time communication protocols * Handle local storage, offline-first experience, message state management, and cross-platform sync logic * Optimize client performance: startup speed, memory, battery, network efficiency, UI responsiveness * Collaborate with backend teams on API design, integration, and production issue investigation * Senior level: mentor junior engineers, contribute to technical design decisions ## Requirements * Bachelor’s degree in Computer Science, Software Engineering, or a related discipline * Engineer: 1-3+ years of experience; Senior Engineer: 3-5+ years * Solid production experience in Android development (Kotlin and/or Java) * Good understanding of Android SDK, Jetpack components, asynchronous programming, and modern client-side architecture * Required: ability to use AI-powered development tools (Cursor, GitHub Copilot, ChatGPT, Claude, or similar) for cross-stack frontend development * Able to read, understand, debug, and make reasonable changes in iOS or Web codebases with AI tool support * Familiarity with WebSocket, MQTT, gRPC, or similar real-time communication protocols * Understanding of messaging concepts: message delivery, read status, sync, local persistence, offline support, push notifications * Good understanding of client-side performance optimization, memory management, multithreading, and security best practices * Familiar with Git, CI/CD pipelines, automated testing, and Agile processes * Strong debugging, problem-solving, ownership, and communication skills ## Preferred Qualifications * Experience building IM products or communication platforms (WhatsApp, Telegram, WeChat, Discord, Slack, Messenger, etc.) * iOS development experience (Swift, SwiftUI, Objective-C) * Web frontend experience (TypeScript, React, Vue, Next.js) * Cross-platform client or mobile full-stack development experience * End-to-end encryption, message security, or cryptographic protocols experience * Voice/video calling or RTC technologies experience * Large-scale distributed messaging infrastructure experience * Fintech, payments, or Web3 applications experience * Open-source contributions or published apps on Google Play/App Store Why Binance• Shape the future with the world’s leading blockchain ecosystem• Collaborate with world-class talent in a user-centric global organization with a flat structure• Tackle unique, fast-paced projects with autonomy in an innovative environment• Thrive in a results-driven workplace with opportunities for career growth and continuous learning• Competitive salary and company benefits• Work-from-home arrangement (the arrangement may vary depending on the work nature of the business team)Binance is committed to being an equal opportunity employer. We believe that having a diverse workforce is fundamental to our success.By submitting a job application, you confirm that you have read and agree to our [Candidate Privacy Notice](https://www.binance.com/en/candidate/privacy/notice). Show more [Apply now >](https://jobicy.com/jobs/150064-client-full-stack-engineer-im-chat-platform-android-focus.md) > Annual salary information is not provided for this position. 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