Senior Software Engineer, Mobile Trading

Posted 2 Days Ago
Be an Early Applicant
San Jose, CA, USA
In-Office
224K-268K Annually
Senior level
Fintech • Financial Services • Cryptocurrency
The Role
Design, build, and maintain end-to-end mobile trading systems for iOS and Android. Ship production-quality code, perform code reviews, break down projects, and align cross-functional teams. Apply AI coding tools, support onboarding, and serve as a mobile subject-matter expert within a fast-paced crypto/Web3 environment.
Summary Generated by Built In
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.
 
  • The salary range for this position is $223,611.00 to $268,333.00.
  • 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. Applicants should apply via OKX internal or external careers site.

#LI-HYBRID#LI-HYBRID

 
Notice:
All official OKX vacancies are published on this website. While roles may appear on selected third-party platforms from time to time, information on other sites may be inaccurate or outdated. If in doubt, please apply directly through our official careers website.
Information collected and processed as part of the recruitment process of any job application you choose to submit is subject to OKX's Candidate Privacy Notice.

Skills Required

  • B.S. or M.S. in Computer Science or equivalent 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 optimize development workflows
  • Ongoing AI skill development (prompt engineering, agent orchestration)
  • Experience communicating technical concepts to non-technical audiences
  • Familiarity with DeFi protocols, wallet integrations, or on-chain data
  • Experience contributing to open source projects or shared code repositories
  • Active participation in developer community (blogs, GitHub, Stack Overflow, etc.)
  • Experience in highly collaborative, fast-paced environments
  • Experience adhering to responsible, ethical AI practices (risk assessment, bias mitigation)

OKX Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about OKX and has not been reviewed or approved by OKX.

  • Fair & Transparent Compensation Pay is considered competitive or above market, especially in engineering, product, and legal roles across major hubs. This positioning is consistently cited as a major attraction for candidates.
  • Healthcare Strength Role descriptions indicate comprehensive medical, dental, vision, life, and disability coverage, with employer-paid premiums in some cases. Health coverage is highlighted alongside core benefits like PTO and parental leave.
  • Wellbeing & Lifestyle Benefits Allowances for education and fitness, meal perks and snacks, team-building budgets, and structured learning programs are described across locations. These extras enhance the total rewards package beyond base pay.

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The Company
HQ: Singapore
1,073 Employees
Year Founded: 2017

What We Do

Founded in 2017, OKX is one of the world’s leading cryptocurrency spot and derivatives exchanges. OKX innovatively adopted blockchain technology to reshape the financial ecosystem by offering some of the most diverse and sophisticated products, solutions, and trading tools on the market. Trusted by more than 20 million users in over 180 regions globally, OKX strives to provide an engaging platform that empowers every individual to explore the world of crypto. In addition to its world-class DeFi exchange, OKX serves its users with OKX Insights, a research arm that is at the cutting edge of the latest trends in the cryptocurrency industry. With its extensive range of crypto products and services, and unwavering commitment to innovation, OKX’s vision is a world of financial access backed by blockchain and the power of decentralized finance.

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