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

1 month ago

Cologne, GermanySenior

Responsibilities

Drive modularization and evolve a scalable iOS architecture.
Define and implement technical standards and architectural guidelines.
Build reusable mobile components for Sponsored Products, Sponsored Brands, product recommendations, banners, and other Retail Media experiences.
Improve CI/CD reliability, build performance, release processes, app stability, and technical health.
Strengthen testing strategy and establish quality foundations across teams.
Review and guide critical architectural decisions across multiple teams.
Reduce technical debt and enable product teams through platform improvements.
Implement feature flags, experimentation, and A/B testing for new customer experiences.
Collaborate with Product Managers, Designers, Backend Engineers, Data Scientists, and Retail Media stakeholders.

Strong expertise in Swift and experience working on large-scale production apps.
Deep understanding of modular architecture and scalable application structures.
Hands-on experience with Clean Architecture, MVVM, or similar patterns.
Understanding of modern concurrency concepts and memory management in iOS.
Solid experience with unit testing and improving test coverage.
Experience with CI/CD pipelines and release processes.
Strong debugging, performance optimization, and cross-team collaboration skills.
Experience with KMP and Android is an additional advantage.
Experience in Retail Media, AdTech, MarTech, or large-scale e-commerce platforms is advantageous.

Urban Sports Club membership package.
Anonymous and free professional mental-health support through Likeminded.
Flexible work-from-home arrangements, including up to 20 days per year from anywhere in the EU where applicable.
Fully funded Deutschland Ticket.
In-house and external training and individual professional development support.

iOSSwiftSwiftUI

1,001-5,000 employees