About OKX: At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me , Do the Right Thing , and Get Things Done . These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. About the team: As a mobile software engineer, you will build and maintain a core OKX app with millions of daily active users. You will work cross-functionally with design, product and other engineering teams to identify customer needs, and ship high-quality new features through fast iterations. This is an opportunity to learn the full life cycle of crypto mobile applications including pro/retail trading, asset management and wallet.   Responsibilities: Build mobile infrastructure and tools to enhance engineering efficiency   Analyze and optimize UI and infrastructure application code for better performance   Develop and maintain reusable iOS app components - Collaborate with product engineering teams to deliver technical solutions and best practices   Optimize the project structure and workflow to improve engineering productivity, efficiency, and quality   Drive architecture innovations to support world-class mobile app development   Requirements: Bachelor's degree or equivalent practical experience 5+ years of industry experience in iOS development Experience in building and shipping complex, business critical iOS app products with frequent iteration   Experience in optimizing App performance, reducing memory footprint and decreasing package size   Deep understanding of design patterns and principles with a broad knowledge of iOS techstack   Familiar with Objective-C, Swift , C/C++ and other tools like Xcode and instruments   Deep understanding of iOS SDK to create scalable, dynamic, and highly performant UI components   Working knowledge of remote APIs, concurrency, layouts, transitions, animations, client side persistence, and architectural patterns on mobile apps   Nice-to-have: Experience working in a complex, matrix organization involving cross-functional and/or cross-business projects   Experience working in a mobile architecture/infrastructure team with deep understanding of the techstack in these projects   Experience in sub-engineering areas such as performance optimization, toolchain, automated testing, design pattern, etc.   Strong communication skills; enjoy working as a team while being comfortable with delivering large business outcomes independently