Consulting, design and full stack development for different clients:
Porsche AG (2018 – 12/2019): Designed and developed native iOS apps in motorsport/Formula E (e.g., travel app and enterprise warehouse management with SAP integration) and e-mobility (Porsche Taycan; developed a native Microsoft Excel data export).
StarFinanz / Sparkasse (05/2019 – 07/2021): Worked on the banking app (FinTS, HBCI, PSD2, Apple Pay): implemented Apple Pay. Implemented a new TAN process. Worked with the FinTS backend (PSD2). Opened bank accounts via the app (eID, VideoID, Authada). Designed a new, modern banking experience.
eBay Kleinanzeigen and Adevinta (07/2021 – 06/2023): Packaging & Pricing (premium features for business customers): e.g., markdown; company pages; advertising options; multi-tenant design system based on SwiftUI and UIKit.
Maschinensucher (07/2023 – 12/2023): Full stack development for mobile (Android, iOS) and backend (PHP, Yii, Elastic Search). Implemented search-agent push notifications, InstantSearch, and modernized the design.
Bankverlag (02/2024 – Present): Consulting and full stack development of white-label apps (iOS / Android / Java Spring Boot) for private banks.
Mar 2018 - Jul 2018
5 months
Bachelor's thesis student
Porsche AG (Formula E)
"Concept for a mobile enterprise solution for end-to-end tracking of critical motorsport components at Porsche AG".
Honored with the RUB student award ("Outstanding academic work").
Aug 2017 - Feb 2018
7 months
Intern
Porsche Motorsport LMP1/Formula E
SAP development.
Visual Basic.
Web development.
Apr 2017 - Nov 2017
8 months
Freelance Android/iOS Developer
Traiwi GmbH
Developed mobile apps.
Feb 2017 - Sep 2017
8 months
Freelance Android/iOS Developer
9elements
Developed a text layout engine for PhotoEditorSDK.
Feb 2011 - Present
14 years 7 months
Founder
App-Pocket
Developed more than 50 apps for iOS, Mac, Apple Watch and Apple TV.
iOS/macOS/watchOS/tvOS and Android developer with more than 12 years of experience.
More than two million downloads.
Apps were featured on the App Store, in local newspapers and on local TV.