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Martin Zoeller

Pragmatic German iOS Developer (6+ yrs) building apps with real impact used by millions

Currently freelancing remotely from Southeast Asia. Available to work in German and English.

An image of me, Martin Zoeller.

Nice to have you here!

I am a German freelance iOS developer with over 6 years of professional experience, particularly passionate about developing apps that provide genuine societal value. My strength lies in finding pragmatic solutions and navigating complex technical situations effectively.

Throughout my career, I've had the opportunity to significantly contribute to the development and launch of "REWE Bonus" for the REWE iOS app at REWE digital, which is now used by millions of users. Additionally, as part of a dedicated startup team at OC Food Solutions GmbH, I helped develop an innovative MVP for local food products for both iOS and Android. Personally, I've been working for over three years on iana, a creative iOS and iPadOS app that provides Apple Music users new ways to explore their music library.

My technical focus is on iOS development (Swift, SwiftUI & UIKit, Combine). I also have valuable experience in cross-platform development (Flutter & Dart, Android & Kotlin), as well as solid backend experience (C#/.NET, Serverless frameworks, TypeScript) and complementary frontend knowledge (Angular, SvelteKit). I invest considerable time in my professional and personal growth.

I communicate clearly and solution-oriented, make pragmatic decisions even under uncertainty, and can quickly adapt to changing requirements. This approach enables me to efficiently implement ideas and advance projects.

In 2025, I intentionally chose greater freedom and flexibility by becoming self-employed, combining my professional activities with an exciting journey around the world. Currently, I live and work from Southeast Asia.

Let's work together!

Find out what I love doing and how I can help your team or project.

Freelance Software Engineer

Specialized in mobile app development for iOS

Full project support or short-term assistance

Bug fixing, performance optimization, CI/CD integration

Swift, SwiftUI, UIKit, Combine, Async/Await, Fastlane, API integration, and more

Cross-platform development (Flutter & Dart), backend development (C#/.NET, Firebase, Serverless frameworks), and frontend development (TypeScript, SvelteKit)