Senior iOS Engineer

For our client, a global technology and communications-platform company, we are looking for Senior iOS Engineers to join an experienced product team in Stockholm. This is an opportunity to work on a large-scale application used by hundreds of millions of users each month. You will take ownership across the full iOS development lifecycle; from technical design and architecture through implementation, testing and deployment.

Responsibilities

• At least 5 years of professional experience in iOS development.
• Advanced proficiency in Swift.
• Strong understanding of iOS architecture, SDKs, asynchronous server communication and UX optimisation.
• Proven experience debugging and troubleshooting complex systems.
• Experience planning, leading and delivering core functionality in large-scale applications.
• Ability to work effectively with requirements and collaborate in broad, cross-functional teams.
• Experience working in Agile development environments.
• Fluent English and Swedish, spoken and written.

Nice to have

• Experience with SwiftUI.
• Familiarity with automation tools such as GitHub Actions and Fastlane.
• Experience mentoring and onboarding junior developers.

Requirements

• Design, develop and maintain the iOS application.
• Deliver new features in close collaboration with product, design and backend teams.
• Ensure high application performance, quality, reliability and responsiveness.
• Contribute to architecture and technical-design decisions.
• Participate actively in code reviews and help maintain high engineering standards.
• Take part in planning, development, testing and deployment activities throughout the software development lifecycle.

Benefits

• Location: Stockholm, Sweden.
• Work model: Hybrid, with up to 40% remote work.
• Workload: Full-time, 100%.
• Assignment period: September 2026 - December 2026.
• Rate: Up to 750 SEK per hour (B2B contract).
• Application deadline: 30 September 2026.