Software Engineer - Mobile - Web3

About The Opportunity

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. Join us in building the next generation of mobile-first Web3 experiences, empowering millions of users to seamlessly interact with digital assets, decentralized applications, and blockchain-powered services through secure and intuitive products.

What You’ll Be Doing 

• Part of a global mobile team, developing new features for the all-in-one iOS and Android apps.
• Strive for performance optimization and maximize customer satisfaction.
• Stay on top of industry trends, and evaluate new solutions to address our unique and fast-growing business needs.
• Work closely with design and product teams, and turn design ideas into quality features that scale to millions of users.
• Collaborate with global development teams, and deliver customized solutions targeting international users while maintaining consistency with the overall architecture.
• Maintain high-quality technical documentation and improve efficiency in cross-office/timezone cooperation.
• Actively uses AI tools as a core part of your engineering workflow — not just for code generation, but for building repeatable workflows and bridging across stacks.

What We Look For In You 

• Experience in either native iOS/Android development, or cross-platform solutions like ReactNative/Flutter/Lua.
• Builds AI-leveraged engineering workflows, curating domain knowledge bases, harnessing context, and codifying repeatable agent skills/workflows, with AI tools like Claude Code/Codex deliver reliably on real production work.
• Fluent with at least one of the following languages: Java/Objective-C/Swift/Kotlin/JavaScript.
• Understanding of common data structures and algorithms.
• Embrace agile development process including TDD, CI and Scrum.
• Passionate about mobile technology and building applications for a large user base.

Nice-To-Haves 

• Strong understanding of blockchain fundamentals, including wallets, smart contracts, tokens (ERC-20, ERC-721, ERC-1155), and decentralized applications (dApps).
  
• Experience building or maintaining production-grade Web3, DeFi, NFT, GameFi, or digital asset applications.