Software Engineer, Mobile, Web3

OKX; Singapore; On-site; SGD 70,000 - 100,000; Full time

Benefits offered by this job

Competitive total compensation package

L&D programs and education subsidy

Wellness and meal allowances

Comprehensive healthcare schemes

Job summary

OKX is seeking a Mobile Software Engineer to build and maintain their app used by millions. This role involves working with cross-functional teams to deliver high-quality features and optimize user experience. Candidates should have experience in native or cross-platform development, be fluent in programming languages such as Java or Swift, and be passionate about mobile technology.

The position offers several perks, including a competitive compensation package, learning programs, wellness allowances, and comprehensive healthcare benefits.

Qualifications

• Experience in native iOS/Android development, or cross-platform solutions.
• Fluent with Java, Objective-C, Swift, Kotlin, or JavaScript.
• Understanding of data structures and algorithms.

Responsibilities

• Build and maintain the OKX app with millions of daily active users.
• Work with design and product teams to develop new features.
• Optimize performance and maximize customer satisfaction.
• Maintain high-quality technical documentation.

Skills

iOS development

Android development

ReactNative

Flutter

JavaScript

TDD

CI

Scrum

Tools

Claude Code

Codex

Job description

OKX will be prioritising applicants who have a current right to work in Singapore, and do not require OKX's sponsorship of a visa.

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 optimisation and maximise 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 customised 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.

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!

Notice

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