Freelancer profile translated to English.
Back to original languageAbout Matthias
Matthias Zarzecki is a Senior iOS and Flutter developer with over 12 years of experience and more than 60 developed projects for clients including IBM, Volkswagen, Telekom, Allianz, and Dr. Oetker. He specializes in developing high-quality mobile apps within the Apple ecosystem and with Flutter, possessing in-depth expertise in Mobile CI/CD, Bluetooth/IoT integrations, eID authentication, accessibility, and new platforms like VisionOS and ARKit.
In addition to client work, he has released his own successful App Store apps with over 40,000 downloads and top 2 chart rankings, and is an active open-source contributor to Fastlane. He is involved in the iOS developer community, runs his own YouTube channel on app development, and has received multiple awards, including a CES Innovation Award and several 'Best App' accolades. Matthias focuses on clean architecture, high test coverage, and reliable delivery.
German
Native or bilingual
English
Native or bilingual
Italian
Conversational
French
Basic
Spanish
Basic
Can work on-site
Berlin (up to 50km), Hamburg (up to 50km), München (up to 50km), Stuttgart (up to 50km), Frankfurt am Main (up to 50km)
Experience
- MaternaSenior Flutter DeveloperMarch 2026 - Today (5 months)Dortmund, Germany- Developed a Flutter app for eID ID card loginsFocus: Flutter, iOS, eID, AusweisAppSDK, Mason, Keycloak, Agentic Coding, Arc42, Jenkins
- VDQ Business SolutionsLead Flutter DeveloperAugust 2025 - November 2025 (3 months)Gießen, Germany- Developed an app for construction site securityFocus: iOS, Flutter, Dart, Riverpod, Bloc, Copilot, Agentic Coding, Claude
- ImmunifriendFlutter ConsultantHEALTH AND WELLNESSJuly 2025 - Today (1 year and 1 month)Saarburg, Germany- Consulted and mentored for a group video call appFocus: iOS, Flutter, Dart, Riverpod, Bloc, Jitsi, Agentic Coding
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Education
- Bachelor of ScienceHTW Berlin2016Bachelor of Science (B.Sc.) in Medieninformatik. Spezialisiert auf iOS Apps & Virtual Reality. Hat speziellen Award "Bestes IT-Projekt der HTW Berlin 2015-2016" erhalten für Abschlussarbeit.