Senior/Staff Software Engineer, Mobile Trading

OKX; San Jose (CA); On-site; USD 224,000 - 322,000; Full time

Benefits offered by this job

Competitive compensation

Education subsidy

Team events

Wellness and meal allowances

Healthcare for employees and dependets

Job summary

OKX’s mobile engineering team is seeking a talented Mobile Engineer on the Trading squad to design and ship end-to-end mobile experiences across iOS and Android, empowering millions of users to trade, invest, and explore Web3.

You will work with product, design, and business teams, applying AI coding tools to accelerate development and improve quality, while maintaining a strong focus on scalable, maintainable mobile code in a fast-paced, collaborative environment in California.

Qualifications

• BS or MS in Computer Science or equivalent experience.
• Proven mobile apps shipped on iOS or Android.
• Strong knowledge of Swift, Kotlin, or React Native.
• Experience in fintech, crypto, or Web3 environments.
• Experience using AI tools to improve workflows.
• Ability to explain technical concepts to non-technical teammates.

Responsibilities

• Design and implement end-to-end mobile systems for iOS and Android.
• Collaborate with product, design, and business teams.
• Write maintainable, well-documented production code with tests.
• Participate in code reviews and mentor others.
• Apply AI tools to accelerate development and improve quality.
• Contribute to interviewing and onboarding of new team members.

Skills

Mobile development

Swift/Kotlin/React Native

Fintech/Web3

AI tooling

Cross-functional collaboration

Tech communication

Education

CS degree

Tools

Xcode

Android Studio

Git

CI/CD

Job description

Who We Are

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 Opportunity

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.

What You’ll Be Doing

• 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.

Nice to Haves

• 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).

Perks & Benefits

• Competitive total compensation package


• L&D programs and Education subsidy for employees' growth and development


• Various team building programs and company events


• Wellness and meal allowances


• Comprehensive healthcare schemes for employees and dependants


• More that we love to tell you along the process!

OKX Statement

OKX is committed to equal employment opportunities regardless of race, color, genetic information, creed, religion, sex, sexual orientation, gender identity, lawful alien status, national origin, age, marital status, and non-job related physical or mental disability, or protected veteran status. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Salary

• The salary range for this position is $223,611.00 to $321,999.00.


• The salary offered depends on a variety of factors, including job-related knowledge, skills, experience, and market location. In addition to the salary, a performance bonus and long-term incentives may be provided as part of the compensation package, as well as a full range of medical, financial, and/or other benefits, dependent on the position offered.

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