Senior Software Engineer, Mobile Trading
External
Okx · San Jose, CAPrepare for this interview
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About the role
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. Our engineering team is comprised of creative problem solvers and strategic software engineers who collaborate closely with product, design, and business teams. We sit at the intersection of finance and technology, building mobile experiences that help millions of users worldwide trade, invest, and explore Web3. As a Mobile Engineer on our Trading team, you will help grow the crypto ecosystem by identifying new features, product opportunities, and scalable solutions - enabling users and partner businesses to unlock the full potential of OKX's platform.
Responsibilities
- Design and build end-to-end mobile systems across iOS and Android, from architecture to launch strategy.
- Understand and apply knowledge of crypto products, blockchain technologies, and market dynamics to deliver solutions at scale.
- Ship production-quality code with an emphasis on long-term maintainability, with relevant documentation and test coverage.
- Break down complex engineering projects into executable tasks and partner with applicable cross-functional teams.
- Independently identify stakeholders and align cross-functional partners toward project completion.
- Conduct code reviews and provide constructive feedback; action feedback from reviews of your own code promptly.
- Apply AI coding tools to accelerate development, improve code quality, and optimise engineering workflows.
- Serve as a subject matter expert within the mobile engineering team and provide consultation on domain-level projects.
- Build relationships with internal stakeholders; share project updates and influence decision-making through data-driven insights.
- Participate in interviewing and onboarding of new team members.
- What We Look For In You
- B.S. or M.S. in Computer Science or equivalent degree/experience.
- Proven experience shipping production-quality mobile code on iOS and/or Android.
- Strong proficiency in Swift, Kotlin, or React Native.
- Experience working in fintech, crypto, or Web3 environments.
- Demonstrated ability to integrate AI tools to optimise workflows and drive measurable impact - e.g. efficiency gains, quality improvements.
- Ongoing AI skill development - prompt engineering, agent orchestration, staying current with emerging AI technologies.
- Experience communicating technical concepts to non-technical audiences.
Requirements
- Familiarity with DeFi protocols, wallet integrations, or on-chain data.
- Experience contributing to open source projects or shared code repositories.
- Active participation in the developer community (blogs, GitHub, Stack Overflow, etc.).
- Experience in highly collaborative, fast-paced environments.
- Experience adhering to responsible, ethical AI practices (e.g. risk assessment, bias mitigation).
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