Available to hire
Experienced senior iOS Engineer with a passion for clean efficient code and software architectures.
Professional software developer since 2007 and iOS developer since day one of the SDK in 2008.
Motivated to lead your project to a great mobile success!
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Language
German
Fluent
English
Advanced
Work Experience
iOS Developer at Techniker Krankenkasse
January 31, 2025 - September 10, 2025Integrated the new electronic patient record (ePA) into the client's iOS app. Implemented features using Swift and SwiftUI, leveraging async/await for a responsive UI. Collaborated with backend and Apple engineers, wrote unit tests, and ensured CI/CD via Jenkins and Fastlane. Used CocoaPods and Swift Package Manager for dependencies.
iOS Developer at WeTransfer
October 1, 2023 - September 10, 2025Joined the team building WeTransfer's new main iOS app. Contributed to daily feature development and delivered the iOS 17 Live Activity widget in collaboration with Apple engineers. Implemented UI with SwiftUI, managed code with Git and GitHub, and set up CI workflows with Fastlane, Bitrise, and Jenkins.
iOS Developer at New Work SE (Xing App - Profile Team)
December 31, 2021 - September 10, 2025Supported profile features for Xing app, creating a new wizard in user profiles to encourage updates. Worked with Swift, SwiftUI, and backend-driven form fields; wrote UI Tests and unit tests; used Jenkins for CI.
iOS Developer at Fielmann
April 30, 2021 - September 10, 2025Part of a digitalisation initiative launching the Fielmann app with AR capabilities for virtual try-ons and fitting glasses. Worked with Swift, Combine, VIP architecture; integrated backend services; wrote UI Tests and unit tests; used CircleCI and Git/GitHub.
iOS Developer at Parship Group
April 30, 2020 - September 10, 2025Transitional in-house development for Parship Dating App; built the base for a new network layer using Combine; collaborated with in-house team; implemented UI tests and unit tests.
iOS Developer at New Work SE (Xing App - Profile Team)
December 31, 2019 - September 10, 2025Larger refactor of Xing app profile; backend-driven form fields configured via GraphQL; implemented Swift/Objective-C; added tests (Unit Tests, Calabash UI Tests).
iOS Developer at eos.uptrade GmbH (CiBo, in cooperation with Siemens)
March 31, 2019 - September 10, 2025Developed a ticketing system for public transport with a focus on automation; worked on iOS app; contributed machine learning aspects; used Swift, Git, Bitbucket; unit tests.
iOS Developer at Xing SE
July 31, 2018 - September 10, 2025Xing App features: Notification Center and platform upsell; expanded app with a new notification channel; handled Swift/Objective-C; xcode; Git; Jenkins.
iOS Developer at SYSMEX
October 31, 2016 - September 10, 2025Marketing-focused iPad app with multiple custom UI interfaces; worked on Swift 3; UX design.
Backend Developer at T-Systems International / T-Systems MMS
August 31, 2015 - September 10, 2025Developed a Java Spring backend for the connected car system; parsed large data streams and pre-filtered events before triggering automated responses; REST APIs; ActiveMQ; cluster deployment; MySQL / PostgreSQL / Cassandra; Liferay 6.1/6.2; Tomcat/Wso2.
Software Developer at Westdeutscher Rundfunk Köln (WDR) - 1Live Freundeskreis
December 31, 2014 - September 10, 2025Technical implementation of the new online platform accompanying one of Europe’s largest radio stations; Java / JSP / HTML / JavaScript; Liferay; Tomcat; MySQL.
iOS Developer at Carlsen Verlag Lernspass - Conni Mathe Klasse 1
December 31, 2013 - September 10, 2025Developed a kids learning game for iOS based on a well-known cartoon character (Conni); Objective-C; UX design.
Web Developer at Zuericasa.ch
December 31, 2014 - September 10, 2025Conception and technical development of a new online platform for real estate in Zurich; ongoing technical support since 2013; Ruby on Rails; AJAX; HTML/JavaScript.
Game Developer at Cataica
December 31, 2014 - September 10, 2025Conception and implementation of an arcade classic for iPhone and iPod touch; iOS; UX/UI; Objective-C.
iOS Developer at WeTransfer
October 1, 2023 - September 10, 2025Joined the team to support development on WeTransfer's new main app. Implemented the iOS 17 Live Activity widget in collaboration with Apple engineers.
iOS Developer at New Work SE (Xing App – Profile Team)
December 1, 2021 - September 10, 2025Contributed to the Xing App profile features; added a new wizard to user profiles and supported a transition of the profile experience.
iOS Developer at Fielmann
April 1, 2021 - September 10, 2025Part of a digitalisation program launching the Fielmann app with AR-based virtual try-on.
iOS Developer at Parship Group
April 1, 2020 - September 10, 2025During a transitional phase, supported the Parship Dating App by establishing a base for a new network layer using Combine and related iOS tech.
iOS Developer at New Work SE (Xing App – Profile Team)
December 1, 2019 - September 10, 2025Contributed to larger refactoring of Xing App profile features; backend-driven form field system via GraphQL.
iOS Developer at eos.uptrade GmbH CiBo
March 1, 2019 - September 10, 2025Part of a team developing a ticketing system for public transportation; integrated ML-based features.
iOS Developer at Xing SE
July 31, 2018 - September 10, 2025Xing App Notification Center / Platform / Upsell; contributed to iOS app development and feature expansion.
Java Backend Developer at T-Systems International / T-Systems MMS Connected Car
January 1, 2014 - September 10, 2025Developed a Java Spring backend to parse a large volume of incoming data, REST API design, and backend services for connected car solutions.
Software Developer at Westdeutscher Rundfunk Köln (WDR) – 1Live Freundeskreis
January 1, 2014 - September 10, 2025Technical implementation of a new online platform for one of Europe’s largest radio stations; Java/JSP/HTML/JavaScript; Liferay portal; MySQL.
Game Developer at Cataica
January 1, 2014 - September 10, 2025Conception, design and implementation of an arcade classic for iPhone/iPod touch as one of the first casual games.
Ruby on Rails Developer at Zuericasa.ch
January 1, 2014 - September 10, 2025Conception and technical development of a new online platform for real estate in Zurich; ongoing technical support since 2013.
iOS Developer at Carlsen Verlag GmbH Lernspass
December 31, 2013 - September 10, 2025Developed a kids’ learning game for iOS based on the Conni character; contributed to UX design and implementation.
Education
Information Technology at University of Applied Sciences Hamburg
January 1, 2004 - January 1, 2008Information Technology at University of Applied Sciences Hamburg
January 1, 2004 - January 1, 2008Qualifications
ADC - Apple Developer Connection attendee
January 11, 2030 - September 10, 2025Cocoaheads Hamburg/Berlin attendee
January 11, 2030 - September 10, 2025Apple Developer Connection (ADC)
January 11, 2030 - September 10, 2025Industry Experience
Software & Internet, Media & Entertainment, Healthcare, Education, Professional Services, Other
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
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