Senior iOS Developer

About the company

A specialist in identity, secure transactions, and digital services, IN Groupe is the global leader in secure identity and trust services. Every day, our 4,000 employees across 40 countries work to ensure that everyone has access to a reliable and secure identity, both in the physical and digital worlds. With our solutions and our international network of 10 R&D centers, we support governments and businesses in more than 130 countries.

Joining IN Groupe means helping to shape the future of the identity and secure transaction market. Become part of our international teams — driven by innovation and proud to design solutions that make life easier and protect personal data for millions of people around the world.

About the role

We are looking for an experienced Senior iOS Developer to join our development team and play a key role in designing, developing, and maintaining secure, high-quality iOS applications for the financial services industry. You will work on business-critical mobile solutions where security, reliability, performance, scalability, and excellent user experience are essential. The role involves close collaboration with product managers, UX/UI designers, backend engineers, security specialists, QA engineers, and other stakeholders across the organization.

Main responsibilities

· Design, develop, test, and maintain native iOS applications using Swift and modern iOS frameworks.

· Take ownership of complex features and deliver high-quality, production-ready solutions.

· Develop secure mobile applications following financial-industry and enterprise security standards.

· Work with Swift, SwiftUI, UIKit, Combine, async/await, and modern iOS architecture patterns.

· Integrate mobile applications with REST APIs, authentication services, and backend systems.

· Implement secure authentication and authorization mechanisms, including OAuth 2.0, OpenID Connect, biometric authentication, and secure token management.

· Apply mobile security best practices, including secure data storage, encryption, certificate validation, and protection of sensitive information.

· Optimize applications for performance, stability and memory usage.

· Write comprehensive unit, UI, and integration tests and contribute to automated testing strategies.

· Participate in code reviews and provide technical guidance to other developers. Troubleshoot complex production issues and contribute to root-cause analysis and continuous improvement.

· Collaborate with DevOps teams to support CI/CD pipelines, automated builds, testing, and App Store releases.

· Contribute to technical design discussions, architecture decisions, and engineering standards.

· Stay current with the latest developments in the Apple/iOS ecosystem and mobile security.

Required Qualifications

• 7+ years of professional software development experience, with significant experience in iOS development.

• Master’s degree in Computer Science, Software Engineering, Information Technology, or a related field is preferred, or equivalent professional experience.

• Experienced and enthusiastic about writing well-designed, testable, and maintainable software using native tools (Xcode, Swift and Objective-C)

• Swift expert

• Good knowledge of Objective-C

• Strong Unit Test design awareness

• Architectural mindset, aware of SOLID principles, focused on simplicity and readability of the codebase

• Good familiarity with iOS app architecture patterns and best practices

• Strong problem-solving skills and ability to work collaboratively with other developers, UX and other stakeholders

• Proficient in written and spoken English

Preferred Qualifications

• Knowledge of iOS security features such as encryption, permissions, and authentication

• Experience with agile development methodologies and tools such as Jira, Confluence

• Experience with UI tests

· Proficient in written and spoken Danish