Senior iOS Engineer

WOO X is a global centralised crypto futures and spot trading platform offering best-in-class liquidity and price execution. WOO X has an average daily volume exceeding $1.5 billion and is home to hundreds of thousands of traders worldwide. WOO X traders benefit from radical transparency through our industry-first live Proof of Reserves & Liabilities dashboard and the company’s mission to maintain the trust of its growing community of traders. Our team of 200+ highly-talented employees works from 12 cities across eight countries in Europe and Asia 🚀

Our vision is to inspire confidence, higher performance, and joy in every user. We have a mission to provide the best liquidity on the best terms. We compete not just on price execution but also on integrity, user experience, innovative tools, and global opportunities.

About the opportunity:

We’re looking for a Senior iOS Engineer to join us on this mission and vision. You’ll become an integral part of the Frontend Team, which builds the web and mobile experiences that define how users engage with WOO X. The team strives to craft interfaces and applications that traders love — intuitive, fast, and high-performing.

What you’ll be working on:

• Lead the architecture design, core feature development, and performance optimization of the WOO X iOS app.
• Participate in product requirement reviews, providing technical feasibility assessments and proposing practical solutions.
• Design and implement high-quality, maintainable, and scalable iOS applications that meet user and business needs.
• Optimise app startup time, memory usage, and network performance to deliver a smooth trading experience.
• Research and apply emerging iOS technologies such as SwiftUI, Combine, and ARKit to enhance app capabilities.
• Collaborate closely with backend, design, and product teams to ensure seamless integration and feature delivery.
• Conduct code reviews, mentor junior and mid-level engineers, and uphold engineering best practices..

Why work with us:

Join us in realising our vision in advancing decentralisation, and leading innovation in CeFi. Enjoy work flexibility, a supportive team, and an environment that nurtures your ideas. Plus, expect a performance-based annual bonus for all contributors at WOO 💪

About you:

• Bachelor’s degree or higher in Computer Science or a related field, with 3+ years of iOS development experience.
• Strong proficiency in Swift; familiarity with Objective-C is a plus.
• Deep understanding of iOS system mechanisms including memory management, RunLoop, and multithreading (GCD, OperationQueue).
• Experience with common architectural patterns (MVC, MVVM, MVP, Clean Architecture) and modular development.
• Proficient in network programming (NSURLSession, WebSocket) and data storage (CoreData, Realm, SQLite).
• Hands-on experience with popular frameworks such as Alamofire, SnapKit, and RxSwift.
• Strong awareness of code quality, documentation standards, and collaborative engineering practices.
• Flutter experience is a strong plus.
• Excellent communication skills in English and Mandarin; ability to work effectively across distributed teams in Mandarin-speaking regions.

Getting the job

We’re actively seeking talented individuals to join our team outside of our typical hiring schedule. This proactive approach allows us to connect with exceptional candidates like you even before specific positions become available.

On average, successful candidates go through five rounds of interviews and tests. Our hiring process begins by meeting with our People Team, who help facilitate the process of placing you in your new role. You can expect to share your experience and ideas in online video interviews with our hiring team, made up of management and potential new colleagues.

Submitting your resume now ensures that you’re first in line when new opportunities arise. By doing so, you’ll have a head start in the selection process and get a chance to showcase your skills and experience.

Get started on your application here!