Senior iOS Engineer

December 25, 2025
Open
Open
up to USD 5,000 Net
Location
Vietnam
Occupation
Full-time
Experience level
Senior
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Job Summary

EL4 - Software Studio tuyển dụng vị trí kỹ sư iOS cấp cao làm việc full-time từ xa cho thị trường Việt Nam, theo múi giờ California. Công việc bao gồm phát triển, bảo trì ứng dụng iOS, triển khai các tính năng mới, tích hợp API, kiểm thử và cải tiến hiệu suất. Thu nhập lên tới 5,000 USD Net, làm việc trong môi trường kỹ thuật hiện đại, dữ liệu thực tế đa lĩnh vực.

Ứng viên cần thành thạo Swift, UIKit/Core Data, kinh nghiệm với MVVM/MVP, RxSwift, modular design, kiến trúc reactive, giao tiếp API an toàn (REST, Alamofire), và kiểm thử TDD/XCTest. Ưu tiên có kinh nghiệm với Firebase và Crashlytics giúp việc kiểm soát chất lượng sản phẩm tốt hơn.

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Title: Senior iOS Engineer

Company: EL4 - Software Studio

Company description: We bring technical expertise and hands-on experience in implementing technology-based solutions across various business domains, including Healthcare, Hospitality, Education, E-Commerce, etc.

Primary description: EL4 - Software Studio · Vietnam (Remote)

Description:

Responsibilities

  • Develop and maintain a high-quality iOS app.
  • Implement new features per technical specs and design requirements.
  • Integrate with external data sources and APIs to extend app functionality.
  • Write clean, maintainable, well-documented code following coding standards.
  • Participate in code reviews to ensure code quality and knowledge sharing.
  • Contribute to mobile architecture modernization efforts, comfortable with maintaining the RxSwift codebase.
  • Design scalable, maintainable solutions aligned with the overall technical architecture and patterns.
  • Follow Test-Driven Development (TDD) and write unit tests to ensure code quality.
  • Focus on bug fixing, performance improvements, and thorough feature testing before release.

Requirements

  • Proficiency in Swift with solid knowledge of UI Kit/Core Data.
  • Experience with MVVM/MVP architectures, dependency injection, modular design, and reactive programming concepts (RxSwift beneficial for legacy code).
  • Familiarity with REST APIs, JSON parsing, Alamofire (iOS), and secure API communication.
  • Experience with unit/UI testing (XCTest) and TDD principles.
  • Firebase services (Analytics, Authentication, FCM, Remote Config) and Crashlytics.

Benefits

  • Working location: Remote full-time (California time zone)
  • Salary range: up to USD 5,000 Net

Location: Vietnam

Skills: iOS programming, Swift, UI Kit, Core Data, MVVM/MVP architectures, RxSwift, REST APIs, JSON parsing, Alamofire, unit/UI testing, TDD, Firebase services.

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EL4 - Software Studio
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