iOS · Flutter · Web
Mobile App Engineer
I'm a mobile app developer focused on iOS with SwiftUI, and also experienced in Flutter and Astro for cross-platform and web apps. I build clean, efficient, and scalable apps with smooth UX and responsive design.
Inside My Dev World
With over 10 years of iOS development experience, I specialize in building exceptional apps across the full Apple ecosystem—from legacy Objective-C to modern Swift, to building modern, dynamic apps.
My expertise spans Core Data, SwiftData, Combine, and Swift Concurrency, enabling me to build reliable, future-ready mobile solutions. I design clean architectures, deliver smooth UX, and create interactive UI with Lottie and Rive animations, ensuring every app feels polished, engaging, and at home on every Apple device.
In addition to iOS, I develop cross-platform apps using Flutter (iOS, Android, Web) and build fast, visually consistent websites with Astro and SvelteKit, both known for their high performance and future-ready architecture. From polished landing pages to SEO-friendly blogs and fast, interactive web experiences, I bridge design and engineering to create responsive, engaging digital products.
I believe AI is the future, and I’m deeply passionate about exploring its potential in real-world applications. I actively work with tools like OpenAI and Azure AI, and hold a Microsoft AI-900 certification to strengthen both my practical and theoretical understanding of applied AI.
Microsoft Certified: Azure AI Fundamentals
View certificationiOS Development with Swift · SwiftUI
With over a decade of experience in iOS development, I build modern, elegant apps using SwiftUI, Swift, and Objective-C. My work is grounded in clean architecture, MVVM patterns, and a declarative UI mindset that ensures maintainability and scalability.
In recent years, I’ve helped multiple teams modernize their legacy Swift/Objective-C apps by migrating to SwiftUI, unlocking smoother workflows, better performance, and a more consistent user experience across devices.
I keep up with the latest from Apple, including iOS 18, SwiftData, and the evolution of Core Data. Whether it’s implementing Firebase for real-time features or optimizing app performance and security, I focus on crafting apps that are fast, scalable, and elegant.
Flutter & Cross-Platform UI Development
I build expressive, high-performance apps that run seamlessly across iOS, Android, and the web — all from a single codebase. With Flutter, I bring ideas to life through beautiful UIs and fast interactions, tailored for users on any screen size or platform.
I develop with Flutter and Dart, leveraging declarative UI principles, responsive design, and modern state management tools like Provider and Riverpod. Whether it’s integrating Firebase, navigating with GoRouter, or delivering beautiful animations and theming, I focus on creating scalable, pixel-perfect cross-platform apps that feel truly native.
Next-Gen Web with Astro & SvelteKit
Building ultra-fast, modern websites and web applications where speed meets simplicity. With Astro and SvelteKit, I create solutions that combine exceptional performance with an effortless development experience — writing less code, shipping faster, and delivering more.
Astro’s powerful islands architecture enables fast, content-driven sites, while SvelteKit brings dynamic capabilities for crafting interactive web apps at remarkable speed. Whether it’s a blazing-fast blog, a modern portfolio, a scalable static site, or a fully dynamic application, Astro and SvelteKit empower me to deliver web experiences that consistently top real-world performance metrics.
Crafting Beautiful Mobile Experiences
Discover mobile interfaces that do more than just look good — they guide, delight, and perform. Dive into projects where visual storytelling and technical precision shape truly standout app experiences.
Horoscope AI App
A Fusion of Astrology & LLM
Description:
A beautifully designed horoscope app that blends ancient astrology with modern AI. Users receive personalized daily readings powered by OpenAI’s LLM, explore compatibility based on zodiac and birth charts, and even draw Tarot cards—all in an immersive and interactive experience.
Tech Stack:
SwiftUI · SwiftData · Firebase · OpenAI API · LLM Prompt Engineering · Lottie Animations
Highlights:
Includes AI-generated daily horoscopes, zodiac-based compatibility analysis, and an interactive Tarot reading feature.
Logo Magic App
Instant Branding for Creators
Description:
An intuitive logo design app that empowers startups, content creators, and entrepreneurs to craft professional logos in seconds. With a drag-and-drop editor, smart layout options, and stylish templates, users can quickly visualize their brand identity.
Tech Stack:
SwiftUI · Swift· CoreData · Firebase · Custom SVG Rendering · Haptic Feedback · Lottie Animations
Highlights:
The app offers real-time logo editing with scalable vector output, fully customizable templates including fonts and color palettes, and instant preview mockups for various use cases like social media, packaging, and business cards.
Cooking Recipes App
Reimagined with Flutter & Modern Architecture
Description:
A user-friendly cooking app designed to help everyday home cooks discover easy, tasty recipes with a clean and intuitive interface. Originally built with UIKit, the app was fully rebuilt in Flutter using Dart to improve speed, cross-platform support, and development efficiency — making cooking inspiration more accessible to everyone.
Tech Stack:
Flutter · Dart · Realm Database · Riverpod· Dio · GetIt · Clean Architecture
Highlights:
Successfully migrated from a legacy UIKit codebase to a Flutter-first, cross-platform architecture. Leveraged Realm for seamless local data persistence and offline access, ensuring a smooth and responsive experience even without internet connectivity.
Work experience
Freelancer iOS/Flutter Developer in Munich
2019 - Present
Developed and maintained mobile apps for clients in the automotive, financial, and design sectors. Collaborated with stakeholders to define requirements, implement responsive UIs, and integrate complex backend systems via REST and GraphQL APIs.
Integrated Generative AI features using OpenAI SDK and other providers, leveraging structured outputs such as JSON Strict Mode for reliable data processing and API integration.
Modernized legacy apps by refactoring codebases and applying MVVM and VIPER architectures to ensure cleaner, more testable code.
Co-founder & Lead Mobile Developer
BlueSky App Software, LinYi, China
2011 - 2019
Led the end-to-end design and development of consumer-facing mobile apps across education, design, and utility domains. Focused on creating visually engaging, intuitive user experiences using native mobile technologies.
Oversaw the entire app lifecycle, from UI/UX and animation design to performance optimization and App Store delivery. Managed a small remote team and coordinated feature releases to ensure product-market alignment.
Senior Software Engineer
Device Insight GmbH, Munich, Germany
2009 - 2011
Contributed to a range of IoT web projects, collaborating closely with cross-functional teams to deliver scalable and reliable solutions.
Led the development of the company’s first iOS and Android apps, taking part in both frontend and backend development. Participated in agile processes using Git and Jira.
Software Engineer
markt.de GmbH, Munich, Germany
2008 - 2009
Engaged in the development of markt.de, one of Germany’s leading classified ads platforms. Took part in building and maintaining key features that improved user engagement and search performance.
Collaborated with backend and frontend teams to implement new functionalities, optimize database interactions, and ensure responsive, accessible UI. Contributed in an agile environment with regular sprints and version control workflows.
Software Engineer
Achievo Corporation, Munich, Germany
2007 - 2008
Worked on internal enterprise applications using Java, SWT, and Eclipse RCP to build modular desktop interfaces in the auto industry sector. Developed core features with Spring MVC and Hibernate, focusing on scalability and maintainability.
Collaborated closely with teams in China to align on requirements, coordinate implementation, and support international delivery timelines.
Software Engineer
Komdata.com, Munich, Germany
2006 - 2007
Participated in the development of a Java SWT-based SEO application. Focused on feature implementation, code optimization, and plugin architecture using Eclipse RCP.
The technology stack included Java, Eclipse RCP, and custom Eclipse plugins. I also worked with Spring, J2EE, WebSphere, JSTL, and XML.
Education
M.Sc. in Computer Science
University of Bremen, Germany
2002 - 2007
German Language Studies (TestDaF Certified)
Hartnackschule Berlin, Germany
2001 - 2002
Skills
Discover the technical strengths that enable me to build scalable, modern, and intelligent digital experiences.
iOS Development
Experienced in building native iOS apps using Swift and SwiftUI/UIKit, with strong knowledge in app lifecycle, Apple native frameworks, and App Store deployment.
Flutter Development
Skilled in developing cross-platform mobile apps using Flutter and Dart, delivering consistent UI and smooth performance across iOS and Android.
Astro & Svelte Web Development
Proficient in building fast, content-focused static websites with Astro and dynamic, high-performance web applications with SvelteKit.
App Modernization
Refactored and migrated legacy codebases to modern Swift standards, including async/await, improved Decodable structures, and declarative UI with SwiftUI.
Backend Integration & BaaS
Experienced with services like Firebase, Supabase, and CloudKit to enable real-time data sync, authentication, and cloud storage without managing backend infrastructure.
Mobile Architecture
Designed scalable, modular, and testable codebases with a strong focus on separation of concerns, feature isolation, and dependency injection.
Generative AI Integration
Implemented OpenAI SDK and other AI APIs to create features such as chat, summarization, and content generation using structured outputs (e.g. JSON Mode).
Motion Graphics Integration
Integrated Lottie and Rive animations to enrich interfaces with transitions, onboarding flows, and micro-interactions, enhancing user engagement through motion design.
API Integration
Solid experience working with REST and GraphQL APIs, including error handling, offline sync, and secure authentication.
Let’s work together
Whether you need a new app or help modernizing an old one, I deliver—fast, flexible, and focused.