Senior iOS Developer (AdTech)

TL;DR

Senior iOS Developer (AdTech) (Swift/SwiftUI): Building scalable Retail Media experiences for a mobile e-commerce platform, including sponsored products, personalized recommendations, native advertising, and campaign-driven customer journeys, with an accent on modular architecture, performance, and experimentation. Focus on evolving the iOS platform architecture, improving CI/CD and testing foundations, and solving complex scalability, stability, and technical debt challenges across multiple product teams.

Location: Cologne, Germany

Company

hirify.global is a European e-pharmacy developing digital healthcare and e-commerce experiences for millions of customers.

What you will do

• Drive modularization and evolve a scalable iOS architecture across the mobile platform.
• Define technical standards, architectural guidelines, and reusable components for Retail Media experiences.
• Build features for sponsored products, sponsored brands, recommendations, and advertising banners.
• Improve CI/CD reliability, build performance, release processes, app stability, and technical health.
• Strengthen unit-testing strategies, test coverage, and quality foundations across teams.
• Implement feature flags, experimentation, and A/B testing while guiding critical architectural decisions and reducing technical debt.

Requirements

• Strong Swift expertise and experience with large-scale production iOS applications.
• Deep understanding of modular architecture and scalable application structures.
• Hands-on experience with Clean Architecture, MVVM, or similar patterns.
• Knowledge of modern concurrency concepts, iOS memory management, debugging, and performance optimization.
• Experience with unit testing, CI/CD pipelines, and mobile release processes.
• Effective collaboration across Product, Design, Backend, Data Science, and Retail Media teams.

Nice to have

• Experience with Kotlin Multiplatform and Android development.
• Background in Retail Media, AdTech, MarTech, or large-scale e-commerce platforms.

Culture & Benefits

• Collaborative, cross-functional environment with high visibility and direct product impact.
• Urban Sports Club membership package.
• Confidential and free mental-health support from Likeminded.
• Individual work-from-home arrangements, including up to 20 days per year from anywhere in the EU when office presence is not required.
• Fully funded Deutschland Ticket and support for internal and external professional training.