Are you an experienced iOS developer passionate about building high-performance, user-centric mobile applications? OKX, a leading global cryptocurrency exchange, is expanding its engineering team in Hong Kong and seeking talented Staff and Senior Mobile Engineers (iOS) to help shape the future of digital finance.
This role offers a unique opportunity to work on cutting-edge blockchain technology while contributing to one of the most innovative platforms in the Web3 space. If you're driven by technical excellence, scalability, and real-world impact, this could be your next career move.
Why Join OKX?
OKX stands at the forefront of the crypto and blockchain revolution. With millions of users worldwide, the platform demands robust, secure, and scalable mobile solutions. As a Mobile Engineer (iOS), you'll play a pivotal role in enhancing the OKX mobile experience — from trading interfaces to wallet management and decentralized application (dApp) integration.
The company fosters a dynamic, fast-paced environment where engineers are empowered to innovate, lead, and grow professionally. Whether you're refining core architecture or launching new features, your work will directly influence how users interact with digital assets.
👉 Discover how top-tier engineering drives innovation in crypto today.
Key Responsibilities
As a Senior or Staff iOS Engineer, your responsibilities will include:
- Designing and developing scalable, maintainable iOS applications using Swift and modern development practices.
- Collaborating closely with product managers, designers, and backend teams to deliver seamless user experiences.
- Optimizing app performance, stability, and security across a wide range of devices.
- Leading code reviews, mentoring junior developers, and setting technical standards.
- Integrating with RESTful APIs and WebSocket services for real-time data streaming.
- Implementing best practices in testing, CI/CD pipelines, and crash monitoring tools.
- Staying ahead of iOS platform updates and adapting the codebase to leverage new capabilities.
You’ll be expected to take ownership of features from concept to deployment, ensuring they meet both functional requirements and performance benchmarks.
Required Skills & Qualifications
To thrive in this role, candidates should possess:
- 3+ years of professional iOS development experience (5+ years for Staff level).
- Proficiency in Swift; Objective-C knowledge is a plus.
- Solid understanding of iOS frameworks such as UIKit, SwiftUI, Combine, and Core Data.
- Experience with concurrency patterns, memory management, and performance tuning.
- Familiarity with RESTful APIs, JSON parsing, and authentication mechanisms.
- Hands-on experience with Git, Xcode, and debugging tools.
- Strong grasp of software design patterns and clean architecture principles (e.g., MVVM, VIPER).
- Prior experience shipping apps to the App Store.
A background in fintech, trading systems, or blockchain applications is highly advantageous but not mandatory.
Preferred Attributes
While not required, the following will set you apart:
- Experience with crypto wallets, blockchain explorers, or dApp browsers.
- Knowledge of security best practices for handling private keys and sensitive user data.
- Exposure to cross-platform frameworks like React Native or Flutter (for interoperability).
- Contributions to open-source projects or technical blogging.
- Leadership experience guiding technical direction on complex mobile initiatives.
Work Environment & Culture
OKX embraces a hybrid work model with offices in key global hubs including Hong Kong. The engineering culture emphasizes agility, collaboration, and continuous learning. You’ll join a diverse team of developers who are deeply passionate about decentralized technologies and committed to pushing the boundaries of what’s possible.
The Hong Kong office serves as a strategic center for talent and innovation in Asia, offering access to regional markets while maintaining close alignment with international teams.
👉 See what it’s like to build next-gen financial tools in a borderless ecosystem.
Career Growth Opportunities
This isn’t just a coding job — it’s a chance to grow into a technical leader. Senior and Staff roles come with opportunities to:
- Define long-term mobile architecture strategies.
- Influence product roadmaps and technical decision-making.
- Represent OKX at tech conferences and developer events.
- Mentor emerging talent within the engineering organization.
Whether you aim to become a principal engineer or transition into engineering management, OKX supports career development through structured growth paths and learning resources.
Frequently Asked Questions (FAQ)
What kind of projects will I work on as an iOS Engineer at OKX?
You’ll contribute to core features of the OKX mobile app, including trading dashboards, portfolio tracking, staking interfaces, NFT galleries, and non-custodial wallet functionality. Projects often involve real-time data processing, secure authentication, and seamless dApp integration.
Is prior blockchain or crypto experience required?
No. While familiarity with blockchain concepts is beneficial, OKX provides onboarding and training for engineers new to the space. What matters most is your ability to learn quickly and build reliable systems.
Does OKX support remote work?
OKX operates a hybrid model. This position is based in Hong Kong but may offer flexibility for partial remote work depending on team needs and performance.
How does OKX ensure code quality and app stability?
We use automated testing (unit, integration, UI), continuous integration pipelines (CI/CD), static analysis tools, and crash reporting platforms like Sentry. Code reviews are mandatory, and all major changes go through rigorous QA processes.
Are there opportunities for professional development?
Yes. Engineers receive access to learning platforms, conference sponsorships, internal tech talks, and mentorship programs. We encourage upskilling in areas like security, distributed systems, and advanced iOS frameworks.
What makes OKX different from other fintech companies?
OKX blends the speed of a startup with the scale of a global platform. We operate at the intersection of finance and technology, serving millions of users across more than 180 countries. Our focus on innovation in Web3 sets us apart from traditional fintech players.
How to Apply
Qualified candidates are encouraged to apply directly through official channels. Please ensure your resume highlights relevant iOS development experience, notable apps shipped, and any contributions to complex mobile systems.
While we cannot respond to every applicant individually, shortlisted candidates will be contacted promptly for technical assessments and interviews.
👉 Accelerate your career by joining a platform shaping the future of finance.
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