Senior iOS Engineer

About the Role

We are seeking a Senior iOS Engineer to design and build high-performance, scalable, and secure mobile applications. This role requires deep technical expertise in iOS architecture, concurrency, memory management, and performance optimisation.

You will play a key role in technical decision-making, system design, and mentoring engineers while ensuring production-grade mobile applications at scale.

Key Responsibilities

• Design, develop, and maintain complex iOS applications using Swift
• Architect scalable and maintainable mobile solutions with clean design principles
• Implement efficient multithreading and concurrency using GCD, OperationQueue, async/await, and Combine
• Optimise memory management, ensuring proper ARC usage, avoiding retain cycles, and minimising memory leaks
• Improve app performance, responsiveness, and battery efficiency
• Conduct code reviews and enforce best practices in architecture and design patterns (MVVM, Clean Architecture, VIPER)
• Integrate RESTful APIs and manage asynchronous data flows
• Collaborate with Product, Backend, QA, and DevOps teams in Agile environments
• Implement automated testing and CI/CD pipelines
• Mentor junior engineers and contribute to engineering standards

Required Skills & Experience

• Minimum 7+ years of hands-on iOS development experience
• Strong proficiency in Swift (Objective-C is a plus)
• Proven experience working in an in-house product company (not purely agency/outsourced project-based work)
• Experience building and scaling consumer-facing or enterprise mobile products
• Deep understanding of iOS concurrency models (thread safety, race conditions, deadlocks)
• Strong knowledge of memory management and performance profiling (Instruments, Time Profiler, Leaks, Allocations)
• Solid experience with UIKit and/or SwiftUI
• Strong understanding of RESTful APIs and asynchronous data handling
• Experience publishing and maintaining apps on the Apple App Store
• Strong problem-solving ability and ownership mindset

We regret to inform that this role is only open to candidates currently working in Singapore and only shortlisted applicants will be notified.