Senior iOS Developer, AdTech (m/f/d)

About your tasks: Drive modularization and continuously evolve a scalable iOS architecture . Define, implement, and refine technical standards and architectural guidelines . Build reusable mobile components for Retail Media experiences, including Sponsored Products, Sponsored Brands, product recommendations, banners. Improve CI/CD reliability, build performance , and release processes . Strengthen testing strategy and establish strong quality foundations across teams. Improve app stability, performance, and overall technical health . Review and guide critical architectural decisions across multiple teams. Reduce technical debt strategically while enabling product teams through platform improvements . Implement feature flags, experimentation, and A/B testing to validate new customer experiences. About you: You have strong expertise in Swift and experience working on large-scale production apps . Experience building cross platform application in KMP and Android experience is additional add-on. You bring deep understanding of modular architecture and scalable app structures . You have hands-on experience with Clean Architecture, MVVM, or similar patterns. You understand modern concurrency concepts and memory management in iOS. You have solid experience with unit testing and improving test coverage . You have worked with CI/CD pipelines and understand release processes . You collaborate effectively across teams and bring strong debugging and performance optimization skills. Experience working in Retail Media , AdTech, MarTech large-scale e-commerce platforms. About your benefits: In order to provide our employees with the best possible support for their individual needs, we offer a wide range of benefits: Sports: Stay healthy. Profit from a membership (M) package at Urban Sports Club, so that you can take advantage of a huge variety of sport offers. Mental Health: Get quick and professional help from psychologists of Likeminded if you feel overwhelmed in private or professional life. Anonymous and free of charge. Work from Home: If your job does not require you to be present in the office, we can arrange the place you work from individually - even for up to 20 days a year anywhere in the EU. Mobility: We provide our employees with a fully costed Deutschland Ticket which can be used at any time. Click here to learn more. Personal development: Grow! We support and encourage your individual development through various in- and external trainings. And many more :)