Freelancer profile translated to English.
Back to original languageAbout Christian
As a software developer specializing in front-end and back-end development, I place particular emphasis on sustainable concepts and the economical implementation of high-quality software solutions. I work with the latest technologies to optimally meet the individual requirements of my clients.
With my extensive experience in developing a wide range of projects – both in teams and independently – I have built up comprehensive expertise in the field of digital ecosystems, encompassing software development, design, code architecture, and particularly Kotlin Multiplatform Development.
I develop apps and websites with a particular focus on maintainable and testable architectures to ensure high code quality in the long term. I consider code reviews essential for promoting quality, efficiency, and collaboration. My expertise in native app development with Kotlin and Swift, as well as hybrid development with Jetpack Compose and Flutter, enables the creation of high-performance, cross-platform applications that are optimally tailored to user needs.
My independent and structured way of working allows me to take on and efficiently implement projects and tasks with personal responsibility. At the same time, I integrate excellently into existing teams to achieve the best possible results together.
In addition to my development work, I work as a trainer and consultant in the field of Flutter. I train developers in Flutter Basics, architecture, and best practices, and am available to you or your team as an advisor and developer – whether for the conception of new projects or the optimization of existing applications.
I would be happy to accompany you on your projects and support you with my passion for excellent software development.
German
Native or bilingual
English
Fluent
Can work on-site
München (up to 50km), Berlin (up to 50km), Hamburg (up to 50km), Frankfurt am Main (up to 50km), Köln (up to 50km)
Experience
- Norddeutsche Solar GmbH
On Malt
AmpelChat App – Pre-MVP Development (Part 1)EDUCATION AND E-LEARNINGFebruary 2026 - March 2026Android app for AI-powered content moderation for children. The core of the app is an Accessibility Service that captures WhatsApp messages in real-time and locally checks them against an AI model for toxic content. Parents receive a notification via a simple dashboard if a match is found.The biggest challenge was Play Store compliance: Apps in this category operate in a gray area and require clean onboarding, a clear privacy policy, and a watertight description of the accessibility purpose. The pre-MVP was successfully submitted. - Bayrisches VerkehrsministeriumSenior Fullstack DeveloperPUBLIC SECTORSeptember 2023 - Today (2 years and 11 months)As part of the 'Radlland Bayern' project for the Free State of Bavaria, I developed a comprehensive concept and analyzed its feasibility. I defined the necessary features and developed the app with Flutter for iOS and Android. The implementations included Maplibre for offline maps, route display and storage, Deep Linking (Branch.io), Crashlytics (Sentri.io), and an evaluation mechanism. Additionally, I conducted QA tests and optimized the app for the Google Play Store and App Store.
- Bijou BrigitteCreating the Bijou Brigitte AppFASHION AND COSMETICSAugust 2023 - February 2024 (6 months)München, GermanyCreating the Flutter app for Bijou Brigitte,implementation of some main screens (feed, product search, shopping cart) with webviews that embed the content of the Bijou Brigitte website into the Flutter app.
Reviews
Philipp
Operations Lead - dotbase medical GmbH
Reviewed on 5/19/2026
Chris supported us in the further development of our iOS and Android app and delivered consistently high-quality work. His experience with Flutter and HealthKit integrations was particularly valuable. Communication via Slack and in video syncs was clear and reliable at all times. Gladly again.
M
Manuel
nine41 GmbH
Reviewed on 11/2/2022
Dear Chris,
it's an absolute pleasure to work with you. Thank you for supporting our team on our journey with your incredible expertise, your years of experience, your pragmatic approach to solving problems, and your close, human communication.
We look forward to many more projects with you!
Regards, Manuel
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Education
- Bachelor of ScienceBayreuth2018Erlernen der Grundlegenden Kompetenzen im IT und Business Bereich