iOS Software Engineer

[iOS Team] The iOS team is responsible for iOS client development to ensure users worldwide can enjoy and smoothly use the product. To achieve faster and more stable operation, most of the codebase is built natively, and performance is continuously optimized by real-time monitoring of various operational metrics. Additionally, we strive to improve development productivity and maintenance efficiency through continuous code improvements.

Responsibilities

• Job Introduction

[Feature]

• Continuously add new features to the product, collaborating with various roles such as design, server, and QA to discuss and implement the optimal solution for achieving goals. Each feature is implemented directly by the developer, who takes responsibility for it, and at the same time, the context and code of that feature are actively shared with team members, aiming for a culture of Collective Code Ownership where the entire team manages it, not just a specific individual.

[Code review]

• To reduce easily missed bugs and improve code quality, all changes undergo code review based on Pull Requests. Formats or rules that can be mechanically checked are automated using tools like SwiftLint, SwiftFormat, and SonarQube. During reviews, the focus is on the appropriateness of the design, stability, readability, and test coverage to collectively create better code.

[Testing]

• Unit tests are written for core logic to maintain stability even with repeated code changes. Test code plays a significant role in discovering and preventing potential bugs before code review or QA stages. Developers must write test cases for the core functionalities or main processing logic of the code they write, which is one of the team's quality standards.

[Troubleshooting]

• To ensure deployed apps maintain performance and stability that meet user expectations, various runtime data such as crash information, performance metrics, and network connection status are monitored in real-time. Specifically, to increase the crash-free session rate and provide a predictable user experience, stability issues are regularly reviewed and improved. Furthermore, by early detection of major performance bottlenecks or connection failures, and quickly analyzing and resolving their causes, the overall quality of the app is continuously optimized.

[Architectural improvement]

• To enhance long-term productivity and maintenance efficiency, the introduction of new technology stacks or architectural paradigms is actively considered. Through a consistent and predictable structure, code complexity is reduced, and modern development practices such as Swift Concurrency and multi-modularization are gradually applied to improve the quality of the entire codebase. Additionally, design improvements aim to reduce side effects and transition to a structure that facilitates feature expansion and testing.

Requirements

• iOS development experience using UIKit, Foundation, etc., based on Swift
• Understanding of basic computer science concepts such as data structures, algorithms, memory models, and operating systems
• Ability to give and receive constructive feedback and communicate smoothly during code reviews and collaboration
• Ability to actively recognize problems and proactively solve them

Preferred Qualifications

• Understanding and experience with Combine and Swift Concurrency
• Experience with testing using XCTest or Swift Testing frameworks
• Understanding of network protocols such as WebRTC, TCP/UDP, TLS
• Experience with UI/UX performance optimization
• Experience in designing and operating multi-module based projects
• Understanding of real-time data streaming processing

Employment Type/Recruitment Process

• Employment Type: Full-time
• Recruitment Process: Document Screening > Coding Test > 1st Interview > Recruiter Call > 2nd Interview > 3rd Interview (if applicable) > Final Offer (* Additional interview stages may be conducted if necessary.)
• For document screening, only successful candidates will be notified individually.
• Application Documents: Free-form detailed resume based on career (Korean or English, PDF)