iOS Developer

Role: iOS Developer

Location: Stockholm, Sweden

Type: Contract

Job Description:

We are looking for a highly skilled Senior Software Engineer (iOS) to design, develop, and maintain high-quality iOS applications. In this role, you will collaborate closely with product managers, designers, engineering teams, and other stakeholders to deliver scalable, performant, and user-centric mobile experiences while adhering to modern software engineering best practices.

Core Technologies

• Swift
• SwiftUI
• Objective-C
• UIKit
• iOS SDK
• Architecture & Design Patterns (MVVM, VIPER, Clean Architecture)
• Unit Testing
• REST APIs
• Performance Optimization
• CI/CD and DevOps practices

Key Responsibilities

• Design, develop, and maintain scalable iOS applications using Swift and SwiftUI.
• Lead technical design discussions and contribute to architectural decisions that promote maintainability, scalability, and performance.
• Collaborate with product managers, designers, QA engineers, backend developers, and cross-functional teams to deliver high-quality features.
• Mentor and support junior engineers through technical guidance, code reviews, and knowledge sharing.
• Ensure adherence to coding standards, best practices, and engineering processes.
• Identify and resolve complex technical challenges related to performance, memory management, concurrency, and application stability.
• Optimize application performance using profiling and debugging tools.
• Integrate mobile applications with backend services and RESTful APIs.
• Participate in Agile development processes, including sprint planning, estimation, and retrospectives.
• Stay current with the latest advancements in iOS development and recommend appropriate technologies, frameworks, and engineering practices.

Required Skills & Qualifications

Swift & SwiftUI

• Strong expertise in Swift and SwiftUI, with the ability to build complex, responsive, and maintainable user interfaces.
• Deep understanding of Swift language features, modern APIs, and best practices.

iOS Development

• Extensive experience with the iOS SDK and core Apple frameworks, including:
• UIKit
• Core Data
• Core Animation
• Core Graphics
• Strong understanding of application lifecycle, memory management, and concurrency.

Software Architecture

• Proven experience implementing scalable architectures such as MVVM, VIPER, or Clean Architecture.
• Ability to design modular, testable, and maintainable applications.

Networking

• Experience integrating RESTful APIs.
• Strong understanding of asynchronous programming, JSON parsing, authentication, and error handling.

Performance & Debugging

• Proficiency with Xcode debugging tools and Instruments.
• Experience diagnosing performance bottlenecks, crash analysis, and memory optimization.

Testing & Quality

• Experience writing unit tests and promoting testable application design.
• Commitment to code quality through peer reviews and engineering best practices.